240 WUUS53 KUNR 232020 SVRUNR SDC103-232115- /O.NEW.KUNR.SV.W.0316.260823T2020Z-260823T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Rapid City SD 220 PM MDT Sun Aug 23 2026 The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... Western Pennington County in west central South Dakota... * Until 315 PM MDT. * At 220 PM MDT, a severe thunderstorm was located over Pactola Reservoir, or 9 miles north of Hill City, moving southeast at 10 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Hill City, Johnson Siding, Hisega, Sheridan Lake, Pactola Reservoir and Palmer Gulch Resort. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Very heavy rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4407 10360 4413 10345 4406 10335 4397 10334 4388 10358 TIME...MOT...LOC 2019Z 333DEG 8KT 4406 10352 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ Helgeson  388 WUUS54 KLIX 232024 SVRLIX LAC033-037-091-232115- /O.NEW.KLIX.SV.W.0146.260823T2024Z-260823T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service New Orleans LA 324 PM CDT Sun Aug 23 2026 The National Weather Service in New Orleans has issued a * Severe Thunderstorm Warning for... Southern St. Helena Parish in southeastern Louisiana... Eastern East Feliciana Parish in southeastern Louisiana... Northeastern East Baton Rouge Parish in southeastern Louisiana... * Until 415 PM CDT. * At 323 PM CDT, a severe thunderstorm was located 7 miles southwest of Darlington, or 8 miles east of Clinton, moving southeast at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Clinton, Greensburg, Montpelier, and Darlington. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 3079 9057 3065 9057 3065 9086 3082 9105 3095 9091 TIME...MOT...LOC 2023Z 310DEG 21KT 3082 9089 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Zeringue  411 WUUS55 KCYS 232025 SVRCYS NEC045-232115- /O.NEW.KCYS.SV.W.0288.260823T2025Z-260823T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Cheyenne WY 225 PM MDT Sun Aug 23 2026 The National Weather Service in Cheyenne has issued a * Severe Thunderstorm Warning for... Southern Dawes County in the Panhandle of Nebraska... * Until 315 PM MDT. * At 225 PM MDT, severe thunderstorms were located along a line extending from Roberts Trailhead Campground to 6 miles southeast of Crawford, moving east at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Roberts Trailhead Campground, Red Cloud Campground, Chadron State Park, and Chadron State Park Campground. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4274 10287 4253 10291 4251 10316 4259 10337 4268 10338 4274 10313 TIME...MOT...LOC 2025Z 290DEG 12KT 4265 10314 4264 10331 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Natoli  501 WUUS52 KILM 232027 SVRILM SCC043-232115- /O.NEW.KILM.SV.W.0080.260823T2027Z-260823T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Wilmington NC 427 PM EDT Sun Aug 23 2026 The National Weather Service in Wilmington has issued a * Severe Thunderstorm Warning for... Southeastern Georgetown County in northeastern South Carolina... * Until 515 PM EDT. * At 427 PM EDT, a severe thunderstorm was located over DeBordieu Colony, moving south at 5 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Minor hail damage to vehicles is possible. Expect wind damage to trees and power lines. * Locations impacted include... Georgetown, DeBordieu Colony, Pawleys Island, and Georgetown Memorial Hospital. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Please send your reports of hail or wind damage, including trees or large limbs downed, by calling the National Weather Service office in Wilmington at 1 800 697 3901. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 3326 7931 3340 7928 3341 7913 3338 7915 3335 7915 3330 7917 3325 7918 TIME...MOT...LOC 2027Z 000DEG 4KT 3336 7920 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ VAO  787 WGUS55 KGJT 232031 FFWGJT COC103-232330- /O.NEW.KGJT.FF.W.0097.260823T2031Z-260823T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Grand Junction CO 231 PM MDT Sun Aug 23 2026 The National Weather Service in Grand Junction has issued a * Flash Flood Warning for... The Lee and P-L Gulch burn scars in... Central Rio Blanco County in northwestern Colorado... * Until 530 PM MDT. * At 231 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Lee and P-L Gulch Burn Scars. Between 0.4 and 0.6 inches of rain have fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scars will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Lee and P-L Gulch Burn Scars. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Lee and P-L Gulch Burn Scars. * Some locations that will experience flash flooding include... areas in and around the Lee and P-L Gulch burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Lee and P-L Gulch Burn Scars. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. && LAT...LON 3973 10794 3969 10802 3970 10808 3999 10839 4012 10824 4003 10789 3983 10790 3983 10794 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE EXPECTED RAINFALL RATE...1.5-3 INCHES IN 1 HOUR $$ BS  064 WGUS55 KFGZ 232036 FFWFGZ AZC005-232330- /O.NEW.KFGZ.FF.W.0130.260823T2036Z-260823T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Flagstaff AZ 136 PM MST Sun Aug 23 2026 The National Weather Service in Flagstaff has issued a * Flash Flood Warning for... The Antelope Creek basin in... Coconino County in north central Arizona... * Until 430 PM MST /530 PM MDT/. * At 136 PM MST /236 PM MDT/, Doppler radar indicated thunderstorms producing heavy rain over the Antelope Creek basin. Between 0.5 and 1 inch of rain has fallen. Additional rainfall amounts up to 0.25 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Antelope Creek basin. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Antelope Creek basin. * Some locations that will experience flash flooding include... Antelope Canyon. This includes the following slot canyons... Upper Antelope Canyon, Lower Antelope Canyon, Owl Canyon, Rattlesnake Canyon, Mountain Sheep Canyon, Ramshead Canyon, Wind Pebble Canyon and Porcupine Canyon. This includes the following creeks, washes and rivers... Antelope Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... Get out of Antelope Canyon and other area slot canyons immediately! Deadly flash flooding is imminent or occurring! && LAT...LON 3694 11144 3694 11142 3690 11140 3688 11137 3684 11135 3679 11138 3680 11143 3686 11142 3689 11142 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ Humphreys  259 WUUS55 KTFX 232041 SVRTFX MTC031-057-232145- /O.NEW.KTFX.SV.W.0095.260823T2041Z-260823T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Great Falls MT 241 PM MDT Sun Aug 23 2026 The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Northeastern Madison County in southwestern Montana... Northern Gallatin County in south central Montana... * Until 345 PM MDT. * At 241 PM MDT, a severe thunderstorm was located 8 miles northwest of Ennis, or 11 miles northeast of Virginia City, moving northeast at 45 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Bozeman, Belgrade, Manhattan, Norris, Four Corners, Amsterdam, Mcallister, Bozeman Hot Springs, Gallatin Gateway, Church Hill, Menard, and Madison Buffalo Jump State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4532 11192 4542 11205 4602 11112 4594 11079 4560 11080 4559 11086 4552 11087 4552 11091 4551 11092 TIME...MOT...LOC 2041Z 235DEG 39KT 4545 11182 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ AM  330 WUUS55 KTFX 232043 SVRTFX MTC041-051-232145- /O.NEW.KTFX.SV.W.0096.260823T2043Z-260823T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Great Falls MT 243 PM MDT Sun Aug 23 2026 The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... East central Liberty County in north central Montana... Central Hill County in north central Montana... * Until 345 PM MDT. * At 243 PM MDT, a severe thunderstorm was located 10 miles south of Joplin, moving east at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Joplin, Beaver Creek, Inverness, Gildford, Hingham, Rudyard, and Kremlin. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4829 11079 4852 11095 4883 10988 4847 10976 TIME...MOT...LOC 2043Z 247DEG 35KT 4841 11075 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Wilson  497 WUUS55 KSLC 232048 SVRSLC UTC003-232130- /O.NEW.KSLC.SV.W.0075.260823T2048Z-260823T2130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Salt Lake City UT 248 PM MDT Sun Aug 23 2026 The National Weather Service in Salt Lake City has issued a * Severe Thunderstorm Warning for... West central Box Elder County in northern Utah... * Until 330 PM MDT. * At 248 PM MDT, a severe thunderstorm was located 26 miles northeast of Montello, moving east at 15 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Etna. This includes Utah Route 30 between mile markers 25 and 27. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4167 11403 4173 11362 4149 11359 4152 11403 TIME...MOT...LOC 2048Z 263DEG 15KT 4160 11395 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ JCW  591 WUUS55 KTFX 232051 SVRTFX MTC027-232145- /O.NEW.KTFX.SV.W.0097.260823T2051Z-260823T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Great Falls MT 251 PM MDT Sun Aug 23 2026 The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Northern Fergus County in central Montana... * Until 345 PM MDT. * At 251 PM MDT, a severe thunderstorm was located 10 miles southwest of Winifred, or 30 miles north of Lewistown, moving east at 30 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Winifred, Suffolk, and Christina. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 4735 10977 4760 10980 4771 10882 4768 10878 4738 10874 TIME...MOT...LOC 2051Z 265DEG 27KT 4749 10959 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Glinskas