Immediate

Responsive action SHOULD be taken immediately

South Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:14

At 814 PM MDT, a severe thunderstorm was located near Creighton, or 33 miles northwest of Philip, moving southeast at 40 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... Wall, Wasta, Elm Springs, Creighton and Grindstone.

Nebraska Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:16

At 816 PM MDT, a severe thunderstorm was located 25 miles north of Ashby, or 30 miles south of Gordon, moving southeast 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... Big Hill, Intersection of Highway 61 and Survey Valley Road, and Morgan Lake.

Arizona Severe Flash Flood Warning | Effective 08/11/2026 19:17

FFWTWC 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.

Arizona Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:17

At 717 PM MST, a severe thunderstorm was located 13 miles east of Pearce-Sunsites, 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... Pearce-Sunsites and Sunizona. This includes the following highways... Route 181 between mile markers 39 and 48. Route 191 between mile markers 33 and 48.

South Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:20

At 820 PM MDT, a severe thunderstorm was located 7 miles south of Morristown, or 31 miles west of Bullhead, moving southeast at 25 mph. THIS IS A DESTRUCTIVE STORM FOR FOR AREAS JUST SOUTH OF KELDRON AND MORRISTOWN. HAZARD...Baseball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be severely injured. Expect shattered windows, extensive damage to roofs, siding, and vehicles. This severe thunderstorm will be near... Morristown and Keldron around 820 PM MDT.

North Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:24

At 924 PM CDT /824 PM MDT/, a severe thunderstorm was located 6 miles north of Heart Butte Dam, or 40 miles south of Beulah, moving east at 25 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... Carson and Heart Butte Dam. Anyone outdoors should move to shelter inside a well-built structure

North Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:26

At 926 PM CDT /826 PM MDT/, a severe thunderstorm was located 6 miles southwest of Fort Yates, or 28 miles southwest of Linton, moving southeast at 30 mph. HAZARD...Two inch 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... Fort Yates, Selfridge, Cattail Recreation Area and Standing Rock.

South Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:28

SVRABR 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.

South Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:29

SVRUNR 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.

North Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:29

SVRBIS 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.
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