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This page displays last 20 Severe Weather Alerts issued by the National Weather Service

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2026-08-11 23:35:04
WGUS54 KMRX 120334
Flash Flood Warning

595 WGUS54 KMRX 120334 FFWMRX TNC009-093-105-123-145-120630- /O.NEW.KMRX.FF.W.0064.260812T0334Z-260812T0630Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Morristown TN 1134 PM EDT Tue Aug 11 2026 The National Weather Service in Morristown has issued a * Flash Flood Warning for... Blount County in east Tennessee... Southwestern Knox County in east Tennessee... Loudon County in east Tennessee... Northeastern Monroe County in east Tennessee... East Central Roane County in east Tennessee... * Until 230 AM EDT. * At 1134 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Oak Ridge, Maryville, Lenoir City, Alcoa, Kingston, Loudon, Farragut, Louisville, Eagleton Village and Vonore. This includes the following highways... Interstate 75 in Tennessee between mile markers 73 and 84. Interstate 40 in Tennessee between mile markers 356 and 370. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3591 8443 3591 8426 3584 8410 3581 8396 3571 8383 3561 8371 3557 8379 3554 8389 3551 8396 3552 8409 3565 8427 3583 8449 FLASH FLOOD...RADAR INDICATED

2026-08-11 23:28:08
WUUS53 KBIS 120327
Severe Thunderstorm Warning

687 WUUS53 KBIS 120327 SVRBIS NDC029-047-120430- /O.NEW.KBIS.SV.W.0276.260812T0327Z-260812T0430Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 1027 PM CDT Tue Aug 11 2026 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Northeastern Emmons County in south central North Dakota... West Central Logan County in southeastern North Dakota... * Until 1130 PM CDT. * At 1027 PM CDT, a severe thunderstorm was located over Hazelton, or 18 miles north of Linton, moving east at 10 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... Hazelton, Braddock and Kintyre. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. && LAT...LON 4644 10036 4663 10037 4663 9991 4634 9990 TIME...MOT...LOC 0327Z 258DEG 8KT 4652 10029 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 23:21:50
WUUS52 KGSP 120321
Severe Thunderstorm Warning

854 WUUS52 KGSP 120321 SVRGSP NCC075-113-173-120415- /O.NEW.KGSP.SV.W.0226.260812T0321Z-260812T0415Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Greenville-Spartanburg SC 1121 PM EDT Tue Aug 11 2026 The National Weather Service in Greenville-Spartanburg has issued a * Severe Thunderstorm Warning for... Macon County in western North Carolina... South central Swain County in western North Carolina... Eastern Graham County in western North Carolina... * Until 1215 AM EDT. * At 1121 PM EDT, a severe thunderstorm was located 7 miles southwest of Bryson City, moving south at 20 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Minor hail damage to vehicles is expected. Expect wind damage to trees and power lines. * Locations impacted include... Franklin, Bryson City, Nantahala Lake, Wesser, Stecoah, Burningtown, Kyle, Otto, Rainbow Springs, and Nantahala. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Please report damaging winds, hail, or flooding to the National Weather Service by calling toll free, 1, 800, 2 6 7, 8 1 0 1, or by posting on our Facebook page, or post it to X using hashtag nwsgsp. Your message should describe the event and the specific location where it occurred. && LAT...LON 3518 8373 3519 8371 3521 8373 3523 8369 3526 8372 3545 8368 3546 8346 3507 8326 3501 8350 3504 8356 3507 8357 3511 8362 3513 8362 3512 8364 3514 8364 3514 8365 3515 8365 3515 8373 3516 8374 TIME...MOT...LOC 0321Z 357DEG 18KT 3538 8357 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 23:21:05
WUUS53 KBIS 120320
Severe Thunderstorm Warning

474 WUUS53 KBIS 120320 SVRBIS NDC015-029-059-120415- /O.NEW.KBIS.SV.W.0275.260812T0320Z-260812T0415Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 1020 PM CDT Tue Aug 11 2026 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Southwestern Burleigh County in south central North Dakota... Northwestern Emmons County in south central North Dakota... Northeastern Morton County in south central North Dakota... * Until 1115 PM CDT. * At 1020 PM CDT, a severe thunderstorm was located 7 miles north of St. Anthony, or 8 miles southwest of Bismarck, moving east at 25 mph. HAZARD...70 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Bismarck, Mandan, Lincoln, Menoken, St. Anthony, University Of Mary, Fort Abraham Lincoln State Park, Mcdowell Dam Recreation Area, Huff, Double Ditch Indian Village, Stumpf State Natural Area and Crown Butte Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing widespread damaging winds and large hail. && LAT...LON 4652 10111 4689 10125 4701 10057 4678 10039 4654 10031 TIME...MOT...LOC 0320Z 258DEG 20KT 4671 10087 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH

2026-08-11 23:18:54
WUUS55 KTWC 120318
Severe Thunderstorm Warning

883 WUUS55 KTWC 120318 SVRTWC AZC003-120400- /O.NEW.KTWC.SV.W.0183.260812T0318Z-260812T0400Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Tucson AZ 818 PM MST Tue Aug 11 2026 The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... Southwestern Cochise County in southeastern Arizona... * Until 900 PM MST. * At 818 PM MST, a severe thunderstorm was located 6 miles northeast of Hereford, moving northwest at 10 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... Sierra Vista, Hereford, Fort Huachuca, Palominas, Charleston and Ramsey Canyon Preserve. This includes the following highways... Route 90 between mile markers 318 and 336. Route 80 between mile markers 324 and 339. Route 92 between mile markers 322 and 348. Route 82 between mile markers 62 and 63. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Continuous cloud to ground lightning is occurring with this storm. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3154 10991 3133 10999 3133 11007 3141 11045 3174 11017 TIME...MOT...LOC 0318Z 128DEG 9KT 3147 11008 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 23:14:28
WGUS55 KTWC 120314
Flash Flood Warning

814 WGUS55 KTWC 120314 FFWTWC AZC003-120615- /O.NEW.KTWC.FF.W.0128.260812T0314Z-260812T0615Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 814 PM MST Tue Aug 11 2026 The National Weather Service in Tucson has issued a * Flash Flood Warning for... South Central Cochise County in southeastern Arizona... * Until 1115 PM MST. * At 814 PM MST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Up to 1 inch of rain has fallen. Gauges in Bisbee have recorded 0.75 inches in 30 minutes. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Bisbee and Naco. This includes the following highways... Route 90 between mile markers 334 and 336. Route 80 between mile markers 328 and 347. Route 92 between mile markers 343 and 355. This includes the following Flash Flood Prone Locations... Davis Rd between HWY 80 & HWY 191. This includes the following streams and drainages... Spring Creek, Gadwell Canyon, San Pedro River and Whitewater Draw. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3133 11009 3147 11008 3156 11006 3167 10997 3166 10986 3148 10984 3133 10980 FLASH FLOOD...RADAR AND GAUGE INDICATED

2026-08-11 23:14:03
WUUS53 KIND 120313
Severe Thunderstorm Warning

817 WUUS53 KIND 120313 SVRIND INC059-081-097-145-120345- /O.NEW.KIND.SV.W.0301.260812T0313Z-260812T0345Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Indianapolis IN 1113 PM EDT Tue Aug 11 2026 The National Weather Service in Indianapolis has issued a * Severe Thunderstorm Warning for... Shelby County in central Indiana... Southern Hancock County in central Indiana... Northeastern Johnson County in central Indiana... Southeastern Marion County in central Indiana... * Until 1145 PM EDT. * At 1113 PM EDT, a severe thunderstorm was located 8 miles southeast of Beech Grove, or 12 miles northwest of Shelbyville, moving east at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Indianapolis, Shelbyville, New Palestine, Morristown, Fairland, Waldron, and Boggstown. This includes Interstate 74 between mile markers 97 and 121. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3956 8604 3970 8603 3978 8565 3939 8566 TIME...MOT...LOC 0313Z 274DEG 29KT 3965 8596 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH

2026-08-11 23:06:24
WUUS53 KBIS 120306
Severe Thunderstorm Warning

151 WUUS53 KBIS 120306 SVRBIS NDC059-120330- /O.NEW.KBIS.SV.W.0274.260812T0306Z-260812T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 1006 PM CDT Tue Aug 11 2026 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... East Central Morton County in south central North Dakota... * Until 1030 PM CDT. * At 1006 PM CDT, a severe thunderstorm was located 9 miles west of St. Anthony, or 18 miles southwest of Mandan, moving southeast at 10 mph. HAZARD...Golf ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... St. Anthony. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing dangerous hail and damaging winds. && LAT...LON 4663 10130 4667 10077 4654 10069 4646 10087 4652 10130 TIME...MOT...LOC 0305Z 311DEG 8KT 4661 10111 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:49:43
WUUS53 KBIS 120249
Severe Thunderstorm Warning

289 WUUS53 KBIS 120249 SVRBIS NDC059-120330- /O.NEW.KBIS.SV.W.0273.260812T0249Z-260812T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 949 PM CDT Tue Aug 11 2026 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Northeastern Morton County in south central North Dakota... * Until 1030 PM CDT. * At 949 PM CDT, a severe thunderstorm was located over Almont, or 28 miles west of Mandan, moving east at 30 mph. HAZARD...Golf ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... New Salem, Almont, St. Anthony, Judson, Fish Creek Dam, Sweet Briar Lake and Crown Butte Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing dangerous hail and damaging winds. && LAT...LON 4663 10158 4683 10161 4692 10104 4662 10085 4660 10130 4663 10130 TIME...MOT...LOC 0249Z 250DEG 27KT 4674 10147 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:43:51
WUUS53 KUNR 120243
Severe Thunderstorm Warning

375 WUUS53 KUNR 120243 SVRUNR SDC055-071-093-103-120345- /O.NEW.KUNR.SV.W.0269.260812T0243Z-260812T0345Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Rapid City SD 843 PM MDT Tue Aug 11 2026 The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... Northwestern Jackson County in southwestern South Dakota... Southwestern Haakon County in west central South Dakota... Southeastern Meade County in west central South Dakota... Southeastern Pennington County in west central South Dakota... * Until 945 PM MDT. * At 843 PM MDT, a severe thunderstorm was located near Quinn, or 23 miles west of Philip, moving southeast at 30 mph. HAZARD...70 mph wind gusts and ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Philip, Wall, Interior, Wasta, Quinn, Elm Springs, Grindstone, Cactus Flat, Creighton, Cedar Pass, Cottonwood, Delta 9 Missile Silo, Delta 1 Launch Facility, Minuteman Missile Visitors Center, Pinnacles Ranger Station, Grindstone Butte and northeastern Badlands National Park. This includes Interstate 90 in South Dakota between Mile Markers 94 and 146. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing widespread damaging winds and large hail. Continuous cloud to ground lightning is occurring with this storm. 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 4425 10266 4433 10253 4438 10195 4394 10137 4362 10206 TIME...MOT...LOC 0243Z 332DEG 24KT 4405 10213 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH

2026-08-11 22:43:41
WUUS53 KLBF 120243
Severe Thunderstorm Warning

676 WUUS53 KLBF 120243 SVRLBF NEC031-120330- /O.NEW.KLBF.SV.W.0296.260812T0243Z-260812T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service North Platte NE 943 PM CDT Tue Aug 11 2026 The National Weather Service in North Platte has issued a * Severe Thunderstorm Warning for... Southwestern Cherry County in north central Nebraska... * Until 1030 PM CDT. * At 942 PM CDT, a severe thunderstorm was located 20 miles north of Ashby, or 38 miles southeast of Gordon, moving southeast at 20 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... Intersection of Highway 61 and Survey Valley Road. This includes Highway 61 between mile markers 168 and 183. 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 4241 10184 4221 10149 4209 10177 4210 10178 4233 10197 TIME...MOT...LOC 0242Z 318DEG 19KT 4231 10184 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:43:11
WUUS53 KABR 120242
Severe Thunderstorm Warning

460 WUUS53 KABR 120242 SVRABR SDC031-120330- /O.NEW.KABR.SV.W.0204.260812T0242Z-260812T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Aberdeen SD 942 PM CDT Tue Aug 11 2026 The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... Western Corson County in north central South Dakota... * Until 930 PM MDT. * At 842 PM MDT, a severe thunderstorm was located 11 miles southwest of Watauga, or 27 miles west of Bullhead, moving southeast at 20 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. * This severe thunderstorm will remain over mainly rural areas of Western Corson County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Aberdeen SD. && LAT...LON 4579 10177 4594 10159 4594 10157 4569 10122 4548 10163 TIME...MOT...LOC 0242Z 333DEG 19KT 4579 10164 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:38:40
WUUS55 KTWC 120238
Severe Thunderstorm Warning
313 WUUS55 KTWC 120238 SVRTWC AZC003-120330- /O.NEW.KTWC.SV.W.0182.260812T0238Z-260812T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Tucson AZ 738 PM MST Tue Aug 11 2026 The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... Southwestern Cochise County in southeastern Arizona... * Until 830 PM MST. * At 738 PM MST, a severe thunderstorm was located 16 miles north of Bisbee, moving northwest at 5 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... Tombstone. This includes Route 80 between mile markers 315 and 325. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3158 10972 3149 10991 3172 11018 3184 10980 TIME...MOT...LOC 0238Z 156DEG 4KT 3163 10984 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:30:28
WGUS54 KMRX 120230
Flash Flood Warning
182 WGUS54 KMRX 120230 FFWMRX TNC009-093-155-120530- /O.NEW.KMRX.FF.W.0063.260812T0230Z-260812T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Morristown TN 1030 PM EDT Tue Aug 11 2026 The National Weather Service in Morristown has issued a * Flash Flood Warning for... Northeastern Blount County in east Tennessee... Southeastern Knox County in east Tennessee... Western Sevier County in east Tennessee... * Until 130 AM EDT. * At 1030 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Knoxville, Sevierville, Gatlinburg, Pigeon Forge, Pittman Center, McMahan, Seymour, Kimberlin Heights and Wears Valley. This includes the following highways... Interstate 75 in Tennessee between mile markers 108 and 109. Interstate 40 in Tennessee between mile markers 384 and 403. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3596 8402 3603 8398 3608 8391 3609 8388 3606 8379 3603 8373 3598 8365 3593 8356 3584 8350 3577 8343 3570 8338 3564 8352 3568 8367 3571 8374 3586 8392 FLASH FLOOD...RADAR INDICATED

2026-08-11 22:29:38
WUUS53 KBIS 120229
Severe Thunderstorm Warning

789 WUUS53 KBIS 120229 SVRBIS NDC001-120300- /O.NEW.KBIS.SV.W.0272.260812T0229Z-260812T0300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 929 PM CDT Tue Aug 11 2026 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... South Central Adams County in southwestern North Dakota... * Until 900 PM MDT. * At 829 PM MDT, a severe thunderstorm was located over Haynes, or 8 miles east of Hettinger, moving southeast at 25 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Haynes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. && LAT...LON 4602 10261 4609 10244 4595 10221 4595 10253 TIME...MOT...LOC 0229Z 312DEG 20KT 4598 10248 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:29:38
WUUS53 KUNR 120229
Severe Thunderstorm Warning

790 WUUS53 KUNR 120229 SVRUNR SDC093-103-120330- /O.NEW.KUNR.SV.W.0268.260812T0229Z-260812T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Rapid City SD 829 PM MDT Tue Aug 11 2026 The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... South Central Meade County in west central South Dakota... Southeastern Pennington County in west central South Dakota... * Until 930 PM MDT. * At 829 PM MDT, a severe thunderstorm was located over Viewfield, or 22 miles northeast of Rapid City, moving southeast at 30 mph. HAZARD...Ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. * Locations impacted include... Wasta, Owanka, Wicksville, Curlew Lake and Viewfield. This includes Interstate 90 in South Dakota between Mile Markers 79 and 101...and between Mile Markers 103 and 106. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. && LAT...LON 4423 10297 4429 10289 4430 10272 4396 10222 4384 10253 TIME...MOT...LOC 0229Z 310DEG 27KT 4421 10285 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH

2026-08-11 22:28:58
WUUS53 KABR 120228
Severe Thunderstorm Warning

623 WUUS53 KABR 120228 SVRABR SDC031-120315- /O.NEW.KABR.SV.W.0203.260812T0228Z-260812T0315Z/ BULLETIN - EAS ACTIVATION REQUESTED Severe Thunderstorm Warning National Weather Service Aberdeen SD 928 PM CDT Tue Aug 11 2026 The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... Northeastern Corson County in north central South Dakota... * Until 915 PM MDT. * At 828 PM MDT, a severe thunderstorm was located 10 miles north of Mclaughlin, moving southeast at 25 mph. HAZARD...Tennis ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * This severe thunderstorm will be near... Mclaughlin around 850 PM MDT. Mahto around 905 PM MDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing dangerous hail and damaging winds. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Aberdeen SD. && LAT...LON 4578 10036 4564 10088 4594 10100 4594 10050 4593 10049 4592 10047 4592 10046 4590 10043 4588 10042 4587 10039 4586 10038 4582 10038 TIME...MOT...LOC 0227Z 333DEG 19KT 4596 10079 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...2.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:18:15
WGUS55 KTWC 120217
Flash Flood Warning

820 WGUS55 KTWC 120217 FFWTWC AZC003-120515- /O.NEW.KTWC.FF.W.0127.260812T0217Z-260812T0515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 717 PM MST Tue Aug 11 2026 The National Weather Service in Tucson has issued a * Flash Flood Warning for... South Central Cochise County in southeastern Arizona... * Until 1015 PM MST. * At 717 PM MST, trained weather spotters reported thunderstorms producing heavy rain across the warned area. Up to 1 inch of rain has fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Trained spotters reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Douglas, Bisbee-Douglas Airport and Pirtleville. This includes the following highways... Route 80 between mile markers 353 and 373. Route 191 between mile markers 1 and 16. This includes the following streams and drainages... Whitewater Draw, Gadwell Canyon and Leslie Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3133 10971 3138 10976 3151 10986 3160 10988 3163 10973 3149 10958 3138 10944 3133 10950 FLASH FLOOD...OBSERVED

2026-08-11 22:15:19
WUUS53 KBIS 120215
Severe Thunderstorm Warning

371 WUUS53 KBIS 120215 SVRBIS NDC037-059-120300- /O.NEW.KBIS.SV.W.0271.260812T0215Z-260812T0300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 915 PM CDT Tue Aug 11 2026 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Northwestern Grant County in south central North Dakota... Northwestern Morton County in south central North Dakota... * Until 1000 PM CDT /900 PM MDT/. * At 915 PM CDT /815 PM MDT/, a severe thunderstorm was located near Heart Butte Dam, or 43 miles south of Beulah, moving east at 20 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Carson and Heart Butte Dam. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. && LAT...LON 4676 10210 4684 10154 4637 10153 4647 10205 4663 10205 4663 10210 TIME...MOT...LOC 0214Z 266DEG 18KT 4664 10185 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH

2026-08-11 22:04:21
WUUS53 KABR 120204
Severe Thunderstorm Warning

268 WUUS53 KABR 120204 SVRABR SDC031-120245- /O.NEW.KABR.SV.W.0202.260812T0204Z-260812T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED Severe Thunderstorm Warning National Weather Service Aberdeen SD 904 PM CDT Tue Aug 11 2026 The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... Northwestern Corson County in north central South Dakota... * Until 845 PM MDT. * At 804 PM MDT, a severe thunderstorm was located over Keldron, or 36 miles west of Bullhead, moving southeast at 25 mph. HAZARD...Tennis ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * This severe thunderstorm will be near... Keldron and Morristown around 805 PM MDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing dangerous hail and damaging winds. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Aberdeen SD. && LAT...LON 4594 10147 4586 10126 4558 10184 4590 10200 4594 10200 TIME...MOT...LOC 0203Z 323DEG 21KT 4592 10180 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...2.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH