Immediate

Responsive action SHOULD be taken immediately

South Carolina Severe Severe Thunderstorm Warning | Effective 09/18/2026 17:24

At 824 PM EDT, a severe thunderstorm was located 11 miles northwest of Spartanburg, or near Inman, moving south at 20 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. Locations impacted include... Greer, Duncan, Lyman, Wellford, Inman, Reidville, GSP Airport, Moore, and Taylors. A few trees and power lines will be blown down in the warned area. The storm will be accompanied by brief heavy rainfall, and little or no lightning. Seek shelter inside an interior room.

Kansas Severe Severe Thunderstorm Warning | Effective 09/18/2026 17:25

At 724 PM CDT, a severe thunderstorm was located 9 miles north of McDonald, or 14 miles southeast of Benkelman, moving northeast 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. This severe thunderstorm will remain over mainly rural areas of east central Cheyenne and northwestern Rawlins Counties in northwestern Kansas, including the following locations... Blakeman and Beardsley.

New Mexico Severe Flash Flood Warning | Effective 09/18/2026 17:30

At 630 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. The expected rainfall rate is 2 to 4 inches in 1 hour. Additional rainfall amounts of 0.5 to 1.5 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. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban

Kansas Severe Severe Thunderstorm Warning | Effective 09/18/2026 16:38

SVRGLD The National Weather Service in Goodland has issued a * Severe Thunderstorm Warning for... Eastern Cheyenne County in northwestern Kansas... Northwestern Thomas County in northwestern Kansas... Rawlins County in northwestern Kansas... Northeastern Sherman County in northwestern Kansas... * Until 645 PM MDT/745 PM CDT/. * At 538 PM MDT/638 PM CDT/, severe thunderstorms were located along a line extending from 7 miles east of St. Francis to 4 miles

Colorado Severe Severe Thunderstorm Warning | Effective 09/18/2026 16:43

SVRGJT The National Weather Service in Grand Junction has issued a * Severe Thunderstorm Warning for... Southwestern Moffat County in northwestern Colorado... * Until 615 PM MDT. * At 542 PM MDT, a severe thunderstorm was located 18 miles northeast of Rangely, or 47 miles east of Vernal, moving east at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Elk Springs. For your protection move to an interior room on the lowest floor of a building.

Idaho Severe Flash Flood Warning | Effective 09-18-2026 16:21

FFWBOI The National Weather Service in Boise has issued a * Flash Flood Warning for... The Wapiti Burn Area in... Northeastern Boise County in southwestern Idaho... * Until 815 PM MDT. * At 521 PM MDT, emergency management reported thunderstorms producing heavy rain over the Wapiti Burn Area. The expected rainfall rate is 0.25 inches in 1 hour. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the

Colorado, Utah Severe Severe Thunderstorm Warning | Effective 09/18/2026 16:15

SVRGJT The National Weather Service in Grand Junction has issued a * Severe Thunderstorm Warning for... Southwestern Moffat County in northwestern Colorado... Northwestern Rio Blanco County in northwestern Colorado... Northeastern Uintah County in northeastern Utah... * Until 545 PM MDT. * At 514 PM MDT, a severe thunderstorm was located over Dinosaur, or 29 miles southeast of Vernal, moving northeast at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected.
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