Immediate

Responsive action SHOULD be taken immediately

Kentucky Severe Flash Flood Warning | Effective 08/11/2026 19:09

At 1009 PM EDT, Doppler radar indicated that earlier thunderstorms produced heavy rain across the warned area. Between 1.5 and 2.5 inches of rain fell. Additional thunderstorms are approaching the warned area, and they could produce another round of heavy rainfall. The additional rainfall could allow any ongoing flash flooding to continue or worsen. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas,

North Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:10

At 910 PM CDT /810 PM MDT/, a severe thunderstorm was located 7 miles west of Fort Yates, or 29 miles southwest of Linton, moving southeast at 30 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. Locations impacted include... Fort Yates, Selfridge, Cattail Recreation Area and Standing Rock.

California Severe Severe Thunderstorm Warning | Effective 08/11/2026 19:13

At 713 PM PDT, a severe thunderstorm was located 7 miles northwest of Amboy, or 25 miles southwest of Mitchell Caverns, moving north at 10 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Mainly rural areas of San Bernardino County. This includes Interstate 40 in California between mile markers 62 and 80. Seek shelter inside a well-built structure and stay away from

North Dakota Severe Severe Thunderstorm Warning | Effective 08-11-2026 18:46

SVRBIS The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Southwestern Emmons County in south central North Dakota... Eastern Sioux County in south central North Dakota... * Until 945 PM CDT /845 PM MDT/. * At 846 PM CDT /746 PM MDT/, a severe thunderstorm was located 13 miles north of Selfridge, or 33 miles west of Linton, moving southeast at 30 mph. THIS IS A DESTRUCTIVE STORM FOR NORTHERN SIOUX COUNTY. HAZARD...Baseball size hail and 60 mph wind gusts. SOURCE...Radar indicated.

California Severe Flash Flood Warning | Effective 08-11-2026 18:46

FFWVEF The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 945 PM PDT. * At 646 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding.

California Severe Flash Flood Warning | Effective 08/11/2026 18:46

FFWVEF The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 945 PM PDT. * At 646 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding.

North Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 18:46

SVRBIS The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Southwestern Emmons County in south central North Dakota... Eastern Sioux County in south central North Dakota... * Until 945 PM CDT /845 PM MDT/. * At 846 PM CDT /746 PM MDT/, a severe thunderstorm was located 13 miles north of Selfridge, or 33 miles west of Linton, moving southeast at 30 mph. THIS IS A DESTRUCTIVE STORM FOR NORTHERN SIOUX COUNTY. HAZARD...Baseball size hail and 60 mph wind gusts. SOURCE...Radar indicated.

Arizona Severe Flash Flood Warning | Effective 08/11/2026 18:53

FFWTWC The National Weather Service in Tucson has issued a * Flash Flood Warning for... Central Cochise County in southeastern Arizona... * Until 1000 PM MST. * At 653 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. 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 indicated.

Nebraska Severe Severe Thunderstorm Warning | Effective 08/11/2026 18:54

SVRLBF The National Weather Service in North Platte has issued a * Severe Thunderstorm Warning for... West central Cherry County in north central Nebraska... East central Sheridan County in the Panhandle of Nebraska... * Until 845 PM MDT. * At 754 PM MDT, a severe thunderstorm was located 21 miles south of Gordon, 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

California Severe Severe Thunderstorm Warning | Effective 08/11/2026 18:54

SVRVEF The National Weather Service in Las Vegas has issued a * Severe Thunderstorm Warning for... San Bernardino County in southern California... * Until 745 PM PDT. * At 654 PM PDT, a severe thunderstorm was located near Amboy, or 27 miles southwest of Mitchell Caverns, moving north 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... Mainly rural areas of San Bernardino County.
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