Immediate

Responsive action SHOULD be taken immediately

North Dakota Severe Severe Thunderstorm Warning | Effective 09/03/2026 16:22

SVRFGF The National Weather Service in Grand Forks has issued a * Severe Thunderstorm Warning for... Northern Grand Forks County in northeastern North Dakota... Southeastern Walsh County in northeastern North Dakota... * Until 715 PM CDT. * At 622 PM CDT, a severe thunderstorm was located near Orr, or 25 miles south of Grafton, moving east at 35 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.

Pennsylvania Severe Severe Thunderstorm Warning | Effective 09/03/2026 16:22

At 722 PM EDT, severe thunderstorms were located along a line from 11 miles southeast of Black Lick to near Connellsville, or along a line from 13 miles southeast of Homer City to near Connellsville, moving southeast at 20 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...

Arizona Severe Flash Flood Warning | Effective 09/03/2026 16:24

At 424 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. 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... Cochise.

Arizona Severe Flash Flood Warning | Effective 09/03/2026 16:24

At 424 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. 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... Tombstone.

New York Severe Flash Flood Warning | Effective 09/03/2026 16:27

FFWBUF The National Weather Service in Buffalo has issued a * Flash Flood Warning for... Northern Erie County in western New York... * Until 1130 PM EDT. * At 727 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 0.5 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.

Minnesota Severe Severe Thunderstorm Warning | Effective 09/03/2026 16:28

At 627 PM CDT, severe thunderstorms were located along a line extending from near Scenic State Park to Schoolcraft State Park to near Remer, 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... Cohasset, Remer, Schoolcraft State Park, Grand Rapids, Pokegama Dam, Pokegama Lake, Coleraine, Taconite and Gunn.

Pennsylvania Severe Severe Thunderstorm Warning | Effective 09-03-2026 16:20

SVRCTP The National Weather Service in State College has issued a * Severe Thunderstorm Warning for... Southwestern Cambria County in central Pennsylvania... Northeastern Somerset County in south central Pennsylvania... * Until 745 PM EDT. * At 720 PM EDT, a severe thunderstorm was located over Jerome, or 8 miles southwest of Westmont, moving east at 45 mph. THIS IS A DESTRUCTIVE STORM FOR BOSWELL, JOHNSTOWN, DAVIDSVILLE. HAZARD...80 mph wind gusts. SOURCE...Radar indicated. IMPACT...Flying debris will be dangerous to those caught without

Arizona Severe Flash Flood Warning | Effective 09/03/2026 16:00

At 400 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2 inches of rain have fallen. 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... Chiricahua National Monument.

Pennsylvania Severe Severe Thunderstorm Warning | Effective 09/03/2026 16:01

SVRCTP The National Weather Service in State College has issued a * Severe Thunderstorm Warning for... Southwestern Cambria County in central Pennsylvania... Somerset County in south central Pennsylvania... * Until 745 PM EDT. * At 701 PM EDT, severe thunderstorms were located along a line from 8 miles west of Belsano to 21 miles northwest of Ursina, or along a line from 11 miles northwest of Nanty-Glo to 24 miles west of Somerset, moving southeast at 35 mph. HAZARD...70 mph wind gusts and small hail. SOURCE...Radar indicated.

Pennsylvania Extreme Tornado Warning | Effective 09/03/2026 16:03

At 703 PM EDT, a severe thunderstorm capable of producing a tornado was located over Ligonier, or 9 miles southeast of Latrobe, moving southeast at 55 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows and vehicles will occur. Tree damage is likely. Locations impacted include... Ligonier, Laurel Mountain, Laurel Mountain State Park and
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