FNUS74 KLIX 180842 FWSLIX Spot Forecast for Grand Isle Block 59 Release INLAND...NOAA National Weather Service New Orleans LA 342 AM CDT Mon May 18 2026 If conditions become unrepresentative, contact the National Weather Service. We can be reached at (985) 649-0357 if you have questions or concerns with this forecast. .DISCUSSION... Onshore flow will persist as high pressure remains anchored over the western Atlantic. A tightening pressure gradient between this high and low pressure across the plains states will lead to strengthening winds, especially west of the Mississippi River. Exercise Caution headlines will remain in effect through tonight. As moisture increases across the region, he chance of daily showers and storms will gradually increase, with the best chances later in the week as a weak front approaches the area. Some storms will be capable of producing locally hazardous winds and waves. .REST OF TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent). Chance of pcpn......0 percent. Min temperature.....Around 80. Max humidity........88 percent. Max apparent temp...88. Surface winds (kts).Southeast winds around 16 knots. Transport winds.....Southeast around 21 mph. Transport winds m/s.Southeast around 9 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......7.3. Wind (20 ft)........Southeast winds around 17 mph. TIME (CDT) 5AM Sky (%).........77 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 Temp............81 RH..............88 Aparnt tmp (F)..88 20 FT wind dir..SE 20 FT wind spd..18 20 FT wind gust.23 SFC wnd dir.....SE SFC wnd spd kts.16 SFC wnd gst.....23 Transp wind dir.SE Transp wind spd.21 Trans wind dir..SE Trans spd (m/s).9 Wave period (s).2 Wave height (ft)1 Ceiling (kft)...7.3 .TODAY... Sky/weather.........Mostly cloudy (70-80 percent). Chance of pcpn......0 percent. Max temperature.....Around 81. Min humidity........88 percent. Max apparent temp...89. Surface winds (kts).Southeast winds 15 to 17 knots. Transport winds.....Southeast 20 to 22 mph. Transport winds m/s.Southeast 9 to 10 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......4.7 decreasing to 1.6 early in the morning, then increasing to 2.7 late in the morning increasing to 4.2 late in the morning increasing to 5.9 increasing to 11 early in the afternoon increasing to 19 increasing to 23 late in the afternoon decreasing to 20. Wind (20 ft)........Southeast winds 16 to 17 mph. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........73 74 80 82 79 79 79 78 76 72 72 72 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............81 81 81 81 81 80 80 80 80 81 81 81 RH..............88 88 88 88 88 94 91 91 94 91 91 91 Aparnt tmp (F)..88 88 88 88 88 87 87 87 87 89 89 89 20 FT wind dir..SE SE SE SE SE SE SE SE SE ESE ESE ESE 20 FT wind spd..18 20 20 20 18 18 17 17 17 17 18 17 20 FT wind gust.23 25 25 25 24 24 23 23 22 22 23 24 SFC wnd dir.....SE SE SE SE SE SE SE SE SE ESE ESE ESE SFC wnd spd kts.16 17 17 17 16 16 15 15 15 15 16 15 SFC wnd gst.....23 25 25 25 24 24 23 23 22 22 23 24 Transp wind dir.SE SE SE SE SE SE SE SE SE SE SE SE Transp wind spd.21 22 22 22 22 20 20 20 20 2021 21 Trans wind dir..SE SE SE SE SE SE SE SE SE SE SE SE Trans spd (m/s).9 10 10 10 10 9 9 9 9 9 9 9 Wave period (s).2 2 2 2 2 2 2 2 2 2 2 2 Wave height (ft)1 1 1 1 1 1 1 1 1 1 1 1 Ceiling (kft)...4.7 1.7 2.0 1.6 2.7 4.2 4.9 5.9 11 19 23 20 .TONIGHT... Sky/weather.........Mostly cloudy (75-85 percent). Chance of pcpn......10 percent. Min temperature.....Around 80. Max humidity........91 percent. Max apparent temp...89. Surface winds (kts).Southeast winds 12 to 15 knots. Transport winds.....Southeast 18 to 22 mph. Transport winds m/s.Southeast 8 to 10 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......12 increasing to 19 early in the evening, then decreasing to 11 late in the evening decreasing to 8.1 late in the evening decreasing to 5.8 decreasing to 3.1 overnight decreasing to 2.2. Wind (20 ft)........Southeast winds 16 to 17 mph. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........82 84 81 82 87 87 79 71 73 75 77 77 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 10 0 0 0 0 0 0 0 0 0 Temp............81 81 81 81 81 81 81 81 81 81 81 81 RH..............91 91 91 91 91 91 91 91 91 91 91 91 Aparnt tmp (F)..89 89 89 89 89 89 89 89 89 89 89 89 20 FT wind dir..ESE ESE ESE ESE ESE ESE SE SE SE SE SE SE 20 FT wind spd..17 17 16 17 17 17 16 15 15 15 14 14 20 FT wind gust.23 23 23 23 23 23 22 21 21 21 21 20 SFC wnd dir.....ESE ESE ESE ESE ESE ESE SE SE SE SE SE SE SFC wnd spd kts.15 15 14 15 15 15 14 13 13 13 12 12 SFC wnd gst.....23 23 23 23 23 23 22 21 21 21 21 20 Transp wind dir.SE SE SE SE SE SE SE SE SE SE SE SE Transp wind spd.22 21 22 22 22 22 21 21 20 18 20 18 Trans wind dir..SE SE SE SE SE SE SE SE SE SE SE SE Trans spd (m/s).10 9 10 10 10 10 9 9 9 8 9 8 Wave period (s).2 2 2 2 2 2 2 2 2 2 2 2 Wave height (ft)1 1 1 1 1 1 1 1 1 1 1 1 Ceiling (kft)...12 19 20 11 8.7 8.1 5.8 3.1 2.2 2.2 2.5 2.4 .TUESDAY... Sky/weather.........Partly sunny (65-75 percent). Slight chance of showers and thunderstorms in the afternoon. Chance of pcpn......20 percent. Max temperature.....Around 81. Min humidity........88 percent. Max apparent temp...89. Surface winds (kts).Southeast winds 12 to 13 knots. Transport winds.....Southeast 17 to 20 mph. Transport winds m/s.Southeast 8 to 9 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......2.0 decreasing to 1.8 late in the morning, then increasing to 3.0 early in the afternoon increasing to 5.0 late in the afternoon increasing to 9.0 increasing to 11 late in the afternoon. Wind (20 ft)........Southeast winds 15 to 16 mph. Gusty and erratic winds expected near thunderstorms in the afternoon. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........76 76 73 70 67 67 68 68 68 68 68 60 Weather cov..... SCH SCH SCH SCH SCH Weather type.... RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH Chc of pcpn (%).0 0 0 0 0 0 10 20 20 20 20 20 Temp............81 81 81 8081 81 80 80 80 81 80 81 RH..............91 91 91 94 88 91 91 91 94 91 91 88 Aparnt tmp (F)..89 89 89 87 88 89 87 87 87 89 87 88 20 FT wind dir..SE SE SE ESE ESE ESE ESE ESE ESE ESE ESE ESE 20 FT wind spd..15 15 15 15 15 15 15 15 14 14 14 14 20 FT wind gust.20 20 18 17 16 17 17 17 17 17 17 17 SFC wnd dir.....SE SE SE ESE ESE ESE ESE ESE ESE ESE ESE ESE SFC wnd spd kts.13 13 13 13 13 13 13 13 12 12 12 12 SFC wnd gst.....20 20 18 17 16 17 17 17 17 17 17 17 Transp wind dir.SE SE SE SE SE SE SE SE SE SE SE SE Transp wind spd.20 20 17 17 18 18 17 17 17 17 17 17 Trans wind dir..SE SE SE SE SE SE SE SE SE SE SE SE Trans spd (m/s).9 9 8 8 8 8 8 8 8 8 8 8 Wave period (s).2 2 2 2 2 2 2 2 2 2 2 2 Wave height (ft)1 1 1 1 1 1 1 1 1 1 1 1 Ceiling (kft)...2.3 2.2 2.0 1.8 1.8 1.8 2.1 3.0 3.4 5.0 9.0 11 .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY... Partly cloudy. Slight chance of showers and thunderstorms. Lows around 80. Highs in the lower 80s. Southeast winds around 12 mph. .THURSDAY... Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 70s. Highs in the lower 80s. Southeast winds around 10 mph. .FRIDAY... Mostly cloudy. Chance of showers and thunderstorms. Lows around 80. Highs in the lower 80s. South winds around 12 mph. .SATURDAY... Mostly cloudy. Chance of showers and thunderstorms. Lows around 80. Highs in the lower 80s. .SUNDAY... Mostly cloudy. Chance of showers and thunderstorms. Lows around 80. Highs in the lower 80s. .OUTLOOK FOR MONDAY MAY 25 THROUGH SUNDAY MAY 31... Next week continues to indicate a very summertime-like weather pattern peristing with mainly afternoon/evening scattered showers. Can't rule out brief early morning showers at times, but widespread heavy or impactful weather next week is looking low, with near-normal temperatures persisting. $$ Forecaster...GILMORE Requested by...Brandi Todd Type of request...HAZMAT .TAG 2613743.4/LIX .DELDT 05/18/26 .FormatterVersion 2.0.0 .EMAIL jhellickson@responsegroupinc.com,apardo@responsegroupinc.com,peter.lebel@noaa.gov,vcarreiro@responsegroupinc.com,rcdauterive@loopllc.com,rlozada@responsegroup.com,demaskey@cleangulfassoc.com,jsilva@responsegroupinc.com,sr-lix.forecasters@noaa.gov,nwcopeland@loopllc.com,elyons@ampol.net,Brandi.Todd@noaa.gov