FNUS56 KPDT 220955 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT UNTIL NOON PDT TODAY FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONE WA695... ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES WA690, WA691, OR691, OR696, OR698, OR700, AND OR703... ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES OR692 AND WA692... ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES OR693 AND WA693... .DISCUSSION...An upper weather system impacting the region today will bring the threat of thunderstorms capable of abundant lightning across WA Cascade crest, northern Blues, and Wallowa county. In most non-mountain zones, breezy winds will overlap with critically low relative humidity this afternoon, resulting in critical fire weather concerns. Multiple Red Flag Warnings are in effect for abundant lightning and for the wind/RH threats. RHs will improve slightly and winds weaken Sunday, though elevated fire weather concerns will remain. ***Winds are 20 foot 10 minute averages *** ***CWR: Chance of wetting rain 0.10 or greater *** ***Ventilation Index is derived from transport wind multiplied by the mixing height in 100's of ft. Categories are a generalized indicator and users are encourage to develop criteria that are suitable and representative of dispersion conditions in their local area of interest. Categories: low (< 200), moderate (200-500), high (500-700), and very high (> 700). -Note: Max transport winds may not occur at the same time as max mixing height. *** WAZ695-222315- East Washington South Central Cascade Mountains- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT UNTIL NOON PDT TODAY FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS... .TODAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A chance of showers and a slight chance of thunderstorms. Patchy smoke in the afternoon. * Max temperature.....73-84...except 64-75 ridges. * Min humidity........42-57 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 9 mph. * Ridges/upr slopes....West winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......8000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (27-67) increasing to low to moderate (143-431) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. Smoky in the evening. Patchy smoke after midnight. * Min temperature.....47-54. * Max humidity........72-87 percent. * Humidity recovery...Good...except Excellent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 9 mph. * Ridges/upr slopes....West winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West around 15 mph. * Ventilation Index...Low to moderate (198-306) decreasing to low (63-133) after midnight. .SUNDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. Patchy smoke in the afternoon. * Max temperature.....68-76...except 58-68 ridges. * Min humidity........36-51 percent...except 47-62 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 9 mph. * Ridges/upr slopes....West winds 4 to 9 mph. * CWR.................0 percent.* Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low to moderate (148-234) increasing to moderate to high (297-503) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 46 to 52. Highs 71 to 84. Northwest winds 1 to 6 mph. .TUESDAY...Mostly clear. Lows 53 to 59. Highs 74 to 87. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 51 to 58. Highs 64 to 78. West winds 4 to 9 mph. .THURSDAY...Partly cloudy with a slight chance of showers. Lows 45 to 51. Highs 59 to 73. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 43 to 49. Highs 62 to 76. West winds 2 to 7 mph. $$ WAZ690-222315- Kittitas Valley- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A slight chance of showers. * Max temperature.....85-93...except 77-87 ridges. * Min humidity........28-39 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph shifting to the west 7 to 13 mph with gusts up to 25 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 6 mph increasing to west 7 to 13 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......9500 ft agl. * Transport winds.....North around 10 mph shifting to the southwest in the afternoon. * Ventilation Index...Low (38-76) increasing to moderate to very high (360-790) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke in the evening. * Min temperature.....54-60. * Max humidity........63-78 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 7 to 13 mph. Gusts to 25 mph in the evening. * Ridges/upr slopes....Northwest winds 7 to 13 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 15 to 20 mph. * Ventilation Index...Moderate (265-339) decreasing to low (43-77) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. Patchy smoke in the afternoon. * Max temperature.....76-84...except 68-77 ridges. * Min humidity........31-40 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 6 to 12 mph. * Ridges/upr slopes....Northwest winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....Northwest around 15 mph. * Ventilation Index...Low to moderate (152-276) increasing to moderate to very high (465-741) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 52 to 58. Highs 81 to 87. Northwest winds 4 to 10 mph. .TUESDAY...Mostly clear. Lows 58 to 64. Highs 86 to 93. Northeast winds up to 5 mph. .WEDNESDAY...Mostly clear. Lows 59 to 65. Highs 80 to 88. West winds 4 to 10 mph. .THURSDAY...Mostly clear. Lows 52 to 57. Highs 74 to 82. West winds 6 to 12 mph. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 76 to 84. West winds 3 to 8 mph. $$ WAZ694-222315- Yakama Alpine District- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. A slight chance of showers in the morning. * Max temperature.....77-87...except 68-79 ridges. * Min humidity........26-41 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph increasing to 8 to 14 mph with gusts up to 30 mph in the afternoon. * Ridges/upr slopes....West winds 4 to 9 mph. * CWR.................0 percent.* Chc of lightning....10 percent (very low chance). * Mixing height.......8000 ft agl. * Transport winds.....Southwest 10 to 15 mph. * Ventilation Index...Low (32-78) increasing to moderate to very high (420-718) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....46-54. * Max humidity........75-90 percent. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 5 to 11 mph. * Ridges/upr slopes....West winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 15 to 20 mph. * Ventilation Index...Moderate (258-352) decreasing to low (42-86) after midnight. .SUNDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....74-82...except 64-76 ridges. * Min humidity........30-45 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (91-173) increasing to moderate (285-417) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 46 to 55. Highs 75 to 87. North winds 1 to 6 mph. .TUESDAY...Mostly clear. Lows 52 to 60. Highs 77 to 91. North winds up to 5 mph. .WEDNESDAY...Mostly clear. Lows 50 to 59. Highs 69 to 83. West winds 4 to 9 mph. .THURSDAY...Mostly clear. Lows 43 to 52. Highs 65 to 79. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 41 to 50. Highs 68 to 81. West winds 2 to 7 mph. $$ ORZ691-WAZ691-222315- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the morning. A slight chance of showers in the morning. * Max temperature.....84-95...except 80-90 ridges. * Min humidity........22-29 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 7 to 13 mph. Gusts to 30 mph in the afternoon. * Ridges/upr slopes....West winds 7 to 13 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......9000 ft agl. * Transport winds.....Southwest around 10 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (41-119) increasing to high to very high (540-788) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....53-60. * Max humidity........65-79 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...West winds 7 to 13 mph. Gusts to 30 mph in the evening. * Ridges/upr slopes....West winds 7 to 13 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 15 to 20 mph. * Ventilation Index...Moderate (316-412) decreasing to low (38-74) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....79-86...except 75-81 ridges. * Min humidity........26-34 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 5 to 11 mph. * Ridges/upr slopes....West winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low to moderate (110-252) increasing to moderate to high (368-568) in the afternoon. .Forecastdays 3 through 7...... .MONDAY...Mostly clear. Lows 53 to 58. Highs 84 to 91. Northwest winds 2 to 7 mph. .TUESDAY...Mostly clear. Lows 57 to 62. Highs 88 to 95. North winds 1 to 6 mph. .WEDNESDAY...Mostly clear. Lows 58 to 64. Highs 82 to 90. West winds 6 to 12 mph. .THURSDAY...Mostly clear. Lows 52 to 57. Highs 77 to 84. West winds 6 to 12 mph. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 79 to 86. West winds 3 to 8 mph. $$ ORZ692-WAZ692-222315- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS... .TODAY... * Sky/weather.........Partly cloudy. Patchy smoke. * Max temperature.....83-91...except 78-83 ridges. * Min humidity........26-33 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....light less than 5 mph becoming west 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......9000 ft agl. * Transport winds.....Southeast around 5 mph shifting to the southwest in the afternoon. * Ventilation Index...Low (26-54) increasing to moderate to high (283-673) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke. * Min temperature.....48-56. * Max humidity........64-79 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low to moderate (185-279) decreasing to low (43-79) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. Patchy smoke in the afternoon. * Max temperature.....73-82...except 66-73 ridges. * Min humidity........27-35 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (81-181) increasing to moderate to high (444-606) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 47 to 55. Highs 78 to 88. West winds 1 to 6 mph. .TUESDAY...Mostly clear. Lows 53 to 62. Highs 81 to 91. Northeast winds up to 5 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 63. Highs 76 to 86. West winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 48 to 57. Highs 70 to 80. West winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 45 to 54. Highs 72 to 82. West winds 1 to 6 mph. $$ ORZ693-WAZ693-222315- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....87-96...except 81-88 ridges. * Min humidity........21-26 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....South winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......10000 ft agl. * Transport winds.....Southeast around 5 mph increasing to south around 15 mph in the afternoon. * Ventilation Index...Low (29-69) increasing to very high (832-1050) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the evening. Patchy smoke. * Min temperature.....48-59. * Max humidity........56-71 percent...except 51-60 percent ridges. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low to moderate (159-297) decreasing to low (35-63) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. Patchy smoke in the morning. * Max temperature.....76-86...except 73-79 ridges. * Min humidity........18-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (57-113) increasing to high to very high (601-753) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 45 to 57. Highs 82 to 91. Northwest winds 1 to 6 mph. .TUESDAY...Mostly clear. Lows 52 to 62. Highs 85 to 95. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 53 to 64. Highs 81 to 91. Southwest winds 3 to 8 mph. .THURSDAY...Mostly clear. Lows 47 to 58. Highs 75 to 84. West winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 44 to 55. Highs 77 to 86. West winds 1 to 6 mph. $$ ORZ701-222315- Eastern Columbia River Gorge of Oregon- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the afternoon. * Max temperature.....81-86...except 76-84 ridges. * Min humidity........29-44 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 7 to 13 mph...except west 9 to 15 mph in the eastern Columbia River Gorge. Gusts to 30 mph in the afternoon. In the eastern Columbia River Gorge, gusts to 30 mph. * Ridges/upr slopes....West winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......6500 ft agl. * Transport winds.....West around 10 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (52-144) increasing to moderate to high (459-699) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke in the evening. * Min temperature.....49-57. * Max humidity........74-89 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Gusts to 30 mph in the evening. West winds 6 to 12 mph. In the eastern Columbia River Gorge, gusts to 30 mph. * Ridges/upr slopes....West winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West around 20 mph decreasing to around 10 mph after midnight. * Ventilation Index...Moderate (246-404) decreasing to low (34-68) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....79-84...except 74-80 ridges. * Min humidity........30-44 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 3 to 8 mph...except northwest 4 to 10 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......5500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low to moderate (75-217) increasing to moderate to high (336-530) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 50 to 56. Highs 84 to 89. Northwest winds 2 to 7 mph. .TUESDAY...Mostly clear. Lows 56 to 62. Highs 87 to 92. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly clear. Lows 54 to 60. Highs 77 to 83. West winds 6 to 12 mph. .THURSDAY...Mostly clear. Lows 48 to 55. Highs 76 to 81. West winds 5 to 11 mph. .FRIDAY...Mostly clear. Lows 46 to 52. Highs 77 to 82. West winds 3 to 8 mph. $$ ORZ702-222315- East Slopes of the Mt. Hood National Forest- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke. * Max temperature.....76-85...except 70-79 ridges. * Min humidity........27-33 percent...except 32-44 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 4 to 9 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (53-79) increasing to moderate to high (410-624) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke in the evening. * Min temperature.....46-53. * Max humidity........74-89 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 15 to 20 mph. * Ventilation Index...Moderate (247-359) decreasing to low (35-111) after midnight. .SUNDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....75-81...except 68-76 ridges. * Min humidity........30-43 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......5500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (78-128) increasing to moderate (252-350) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 48 to 55. Highs 76 to 86. Terrain driven winds less than 5 mph. .TUESDAY...Mostly clear. Lows 55 to 62. Highs 77 to 90. Terrain driven winds less than 5 mph. .WEDNESDAY...Partly cloudy. Lows 50 to 59. Highs 67 to 81. West winds 2 to 7 mph. .THURSDAY...Mostly clear. Lows 45 to 52. Highs 65 to 78. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 43 to 50. Highs 67 to 80. West winds up to 5 mph. $$ ORZ695-222315- Eagle Cap Wilderness- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....82-92...except 71-82 ridges. * Min humidity........21-31 percent. * 20-foot winds....... * Valleys/lwr slopes...South winds 4 to 9 mph. * Ridges/upr slopes....South winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......10500 ft agl. * Transport winds.....South around 10 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (47-129) increasing to very high (1016-1050) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke. * Min temperature.....48-55. * Max humidity........53-68 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 3 to 8 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low to moderate (147-287) decreasing to low (26-52) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. Patchy smoke in the morning. * Max temperature.....74-85...except 64-75 ridges. * Min humidity........17-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 3 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (43-99) increasing to high to very high (570-756) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 47 to 54. Highs 73 to 88. Northwest winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 53 to 60. Highs 75 to 90. Southeast winds 4 to 9 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 61. Highs 72 to 87. South winds 5 to 11 mph. .THURSDAY...Mostly clear. Lows 47 to 55. Highs 67 to 81. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 45 to 52. Highs 68 to 83. West winds 2 to 7 mph. $$ ORZ694-222315- Grande Ronde Valley of Oregon- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy. Patchy smoke. * Max temperature.....91-96. * Min humidity........21-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming south 3 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......11000 ft agl. * Transport winds.....Southeast around 5 mph increasing to south around 15 mph in the afternoon. * Ventilation Index...Low (25-45) increasing to very high (788-1050) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke. * Min temperature.....47-52. * Max humidity........71-86 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 6 to 12 mph. * Ridges/upr slopes....Northwest winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......500 ft agl. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Low to moderate (182-298) decreasing to low (31-67) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....82-87. * Min humidity........21-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 5 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (46-80) increasing to moderate to high (449-561) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 45 to 51. Highs 88 to 93. North winds 2 to 7 mph. .TUESDAY...Mostly clear. Lows 52 to 57. Highs 91 to 96. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 59. Highs 87 to 92. West winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 47 to 52. Highs 81 to 86. Northwest winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 44 to 49.Highs 83 to 88. Northwest winds 2 to 7 mph. $$ ORZ699-222315- Western Forested Blue Mountains- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy. Patchy smoke in the morning. * Max temperature.....84-91...except 78-85 ridges. * Min humidity........17-26 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southwest 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......11500 ft agl. * Transport winds.....South around 5 mph increasing to southwest around 15 mph in the afternoon. * Ventilation Index...Low (32-84) increasing to very high (787-1050) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke after midnight. * Min temperature.....46-53. * Max humidity........61-76 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Moderate (207-357) decreasing to low (26-42) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....76-82...except 71-77 ridges. * Min humidity........17-26 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (68-106) increasing to high to very high (532-728) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 46 to 52. Highs 79 to 88. Terrain driven winds less than 5 mph. .TUESDAY...Mostly clear. Lows 52 to 58. Highs 81 to 90. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 52 to 59. Highs 77 to 86. West winds up to 5 mph. .THURSDAY...Mostly clear. Lows 46 to 52. Highs 72 to 81. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 44 to 50. Highs 73 to 83. Terrain driven winds less than 5 mph. $$ ORZ696-222315- John Day Valley- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Partly cloudy. Patchy smoke in the morning. * Max temperature.....85-93...except 80-85 ridges. * Min humidity........13-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 3 to 8 mph. * Ridges/upr slopes....Southwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......12000 ft agl. * Transport winds.....Southwest around 5 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (36-78) increasing to very high (948-1050) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke. * Min temperature.....49-54. * Max humidity........59-71 percent. * Humidity recovery...Good...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 3 to 8 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 4 to 9 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent.* Mixing height.......500 ft agl. * Transport winds.....Northwest around 15 mph decreasing to around 5 mph after midnight. * Ventilation Index...Moderate (321-457) decreasing to low (25-29) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....77-86...except 73-78 ridges. * Min humidity........15-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (40-68) increasing to moderate to high (462-646) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 49 to 54. Highs 84 to 94. Northeast winds 1 to 6 mph. .TUESDAY...Partly cloudy. Lows 54 to 59. Highs 85 to 95. Southeast winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 60. Highs 81 to 90. West winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 48 to 54. Highs 76 to 85. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 46 to 52. Highs 78 to 87. Southwest winds 1 to 6 mph. $$ ORZ700-222315- Central Mountains of Oregon- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke in the morning. * Max temperature.....84-89...except 78-84 ridges. * Min humidity........11-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 2 to 7 mph shifting to the west 7 to 13 mph with gusts up to 25 mph in the afternoon. * Ridges/upr slopes....Southwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Southwest around 10 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (56-130) increasing to very high (951-1050) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....42-50. * Max humidity........70-85 percent...except 59-69 percent ridges. * Humidity recovery...Good...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 5 to 11 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West around 15 mph decreasing to around 5 mph after midnight. * Ventilation Index...Moderate to high (371-511) decreasing to low (25-33) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....79-84...except 72-78 ridges. * Min humidity........13-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (36-70) increasing to moderate to high (356-582) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 44 to 52. Highs 84 to 90. Northeast winds 1 to 6 mph. .TUESDAY...Partly cloudy. Lows 47 to 57. Highs 85 to 91. Southwest winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 46 to 56. Highs 81 to 86. West winds 2 to 7 mph. .THURSDAY...Mostlyclear. Lows 41 to 50. Highs 77 to 83. West winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 40 to 48. Highs 79 to 84. West winds 1 to 6 mph. $$ ORZ703-222315- Warm Springs Reservation- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Patchy smoke. * Max temperature.....80-90...except 67-78 ridges. * Min humidity........21-28 percent...except 29-44 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 7 to 13 mph with gusts up to 30 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 6 mph increasing to 7 to 13 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....West around 10 mph increasing to southwest around 20 mph in the afternoon. * Ventilation Index...Low (52-92) increasing to high to very high (678-984) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke in the evening. * Min temperature.....48-53. * Max humidity........71-83 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...West winds 6 to 12 mph decreasing to 1 to 6 mph after midnight. * Ridges/upr slopes....West winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West around 20 mph decreasing to around 10 mph after midnight. * Ventilation Index...Moderate (299-391) decreasing to low (25-98) after midnight. .SUNDAY... * Sky/weather.........Partly cloudy then becoming sunny. Patchy smoke in the afternoon. * Max temperature.....78-86...except 67-75 ridges. * Min humidity........23-30 percent...except 31-43 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 5 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (49-113) increasing to moderate (327-391) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 50 to 55. Highs 81 to 90. North winds 1 to 6 mph. .TUESDAY...Mostly clear. Lows 56 to 61. Highs 83 to 93. North winds 1 to 6 mph. .WEDNESDAY...Partly cloudy. Lows 53 to 58. Highs 74 to 87. West winds 4 to 9 mph. .THURSDAY...Mostly clear. Lows 48 to 53. Highs 72 to 83. West winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 46 to 51. Highs 73 to 85. West winds 2 to 7 mph. $$ ORZ704-222315- Northern Deschutes National Forest- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming sunny. Patchy smoke in the morning. * Max temperature.....79-85...except 66-76 ridges. * Min humidity........22-27 percent...except 28-43 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 5 to 11 mph in the afternoon. * Ridges/upr slopes....Southwest winds 2 to 7 mph shifting to the west 7 to 13 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9500 ft agl. * Transport winds.....Southwest around 10 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (77-121) increasing to very high (744-1010) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....41-49. * Max humidity........80-95 percent...except 69-84 percent ridges.* Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 5 to 11 mph. * Ridges/upr slopes....Southwest winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 15 to 20 mph. * Ventilation Index...Moderate (309-391) decreasing to low (35-87) after midnight. .SUNDAY... * Sky/weather.........Partly cloudy then becoming sunny. * Max temperature.....79-85...except 67-76 ridges. * Min humidity........21-27 percent...except 27-38 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....Northwest winds up to 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (59-95) increasing to moderate (354-424) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 44 to 52. Highs 78 to 89. Terrain driven winds less than 5 mph. .TUESDAY...Mostly clear. Lows 48 to 57. Highs 77 to 90. Terrain driven winds less than 5 mph. .WEDNESDAY...Partly cloudy. Lows 45 to 53. Highs 70 to 83. West winds 3 to 8 mph. .THURSDAY...Mostly clear. Lows 40 to 48. Highs 68 to 80. West winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 38 to 46. Highs 69 to 82. West winds 1 to 6 mph. $$ ORZ705-222315- Southern Deschutes National Forest- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming sunny. * Max temperature.....79-84...except 68-78 ridges. * Min humidity........15-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 3 to 8 mph. * Ridges/upr slopes....Southwest winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10000 ft agl. * Transport winds.....Southwest around 10 mph increasing to around 20 mph in the afternoon. * Ventilation Index...Low (89-159) increasing to very high (944-1050) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....35-45. * Max humidity........83-98 percent...except 68-83 percent ridges. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Moderate (306-478) decreasing to low (26-48) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....78-83...except 68-77 ridges. * Min humidity........14-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....West winds 1 to 6 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (46-86) increasing to moderate to high (398-540) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 38 to 49. Highs 80 to 89. Terrain driven winds less than 5 mph. .TUESDAY...Mostly clear. Lows 42 to 53. Highs 78 to 88. Southwest winds up to 5 mph. .WEDNESDAY...Partly cloudy. Lows 39 to 50. Highs 73 to 83. West winds 1 to 6 mph. .THURSDAY...Mostly clear. Lows 35 to 45. Highs 71 to 82. West winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 34 to 44. Highs 72 to 83. West winds up to 5 mph. $$ ORZ697-222315-Central Blue Mountains- 255 AM PDT Sat Aug 22 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....84-89...except 79-85 ridges. * Min humidity........13-19 percent. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 4 to 9 mph. * Ridges/upr slopes....Southwest winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Southwest around 10 mph increasing to around 25 mph in the afternoon. * Ventilation Index...Low (72-102) increasing to very high (1050) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Patchy smoke after midnight. * Min temperature.....45-53. * Max humidity........55-69 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Moderate to high (418-528) decreasing to low (28-50) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....78-83...except 73-79 ridges. * Min humidity........12-17 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 3 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 3 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (76-128) increasing to very high (733-967) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Mostly clear. Lows 44 to 52. Highs 80 to 87. Northeast winds 1 to 6 mph. .TUESDAY...Partly cloudy. Lows 50 to 58. Highs 81 to 88. South winds 3 to 8 mph. .WEDNESDAY...Partly cloudy. Lows 50 to 58. Highs 78 to 84. Southwest winds 2 to 7 mph. .THURSDAY...Mostly clear. Lows 44 to 52. Highs 75 to 81. West winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 42 to 51. Highs 76 to 82. Southwest winds 1 to 6 mph. $$ ORZ698-222315- Southern Blue Mountains- 255 AM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM PDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....84-90. * Min humidity........10-15 percent. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 4 to 9 mph. * Ridges/upr slopes....Southwest winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Southwest around 10 mph increasing to around 25 mph in the afternoon. * Ventilation Index...Low (65-101) increasing to very high (1050) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Patchy smoke after midnight. * Min temperature.....46-54. * Max humidity........53-67 percent. * Humidity recovery...Good...except Moderate ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 3 to 8 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Moderate to high (480-564) decreasing to low (41-57) after midnight. .SUNDAY... * Sky/weather.........Mostly sunny. * Max temperature.....79-85. * Min humidity........9-14 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (80-118) increasing to very high (791-1009) in the afternoon. .Forecast days 3 through 7...... .MONDAY...Partly cloudy. Lows 45 to 53. Highs 83 to 89. North winds 1 to 6 mph. .TUESDAY...Partly cloudy. Lows 50 to 58. Highs 84 to 90. South winds 2 to 7 mph. .WEDNESDAY...Partly cloudy. Lows 50 to 58. Highs 81 to 87. West winds 3 to 8 mph. .THURSDAY...Mostly clear. Lows 45 to 53. Highs 78 to 84. West winds 2 to 7 mph. .FRIDAY...Partly cloudy. Lows 43 to 51. Highs 80 to 85. Southwest winds 1 to 6 mph. $$ .8-14 DAY OUTLOOK for Saturday August 29 through Friday September 4... A greater chance of near to below normal temperatures and near to above normal precipitation . $$