Severe

Significant threat to life or property

Minnesota Severe Flash Flood Warning | Effective 09/18/2026 19:02

FFWARX The National Weather Service in La Crosse has issued a * Flash Flood Warning for... Northern Fillmore County in southeastern Minnesota... Northern Mower County in southeastern Minnesota... * Until 100 AM CDT. * At 902 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

Nebraska Severe Severe Thunderstorm Warning | Effective 09/18/2026 19:14

At 814 PM MDT, a severe thunderstorm was located near Harrison, or 33 miles east of Lusk, 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... Harrison and Fort Robinson State Park. For your protection move to an interior room on the lowest floor of a building.

South Carolina Severe Severe Thunderstorm Warning | Effective 09/18/2026 18:50

At 950 PM EDT, a severe thunderstorm was located 13 miles southeast of Anderson, or near Honea Path, moving south at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. Locations impacted include... Homeland Park, Belton, Honea Path, Starr, Antreville, Broadway Lake, Anderson, and Lake Secession. For your protection move to an interior room on the lowest floor of a building. A few trees and power lines will be blown down in the warned area.

Nebraska, Wyoming Severe Severe Thunderstorm Warning | Effective 09/18/2026 18:56

SVRCYS The National Weather Service in Cheyenne has issued a * Severe Thunderstorm Warning for... Scotts Bluff County in the Panhandle of Nebraska... Northwestern Banner County in the Panhandle of Nebraska... Southwestern Sioux County in the Panhandle of Nebraska... Southeastern Goshen County in southeastern Wyoming... * Until 845 PM MDT. * At 756 PM MDT, severe thunderstorms were located along a line extending from 12 miles northeast of Torrington Municipal Airport

New Mexico Severe Flash Flood Warning | Effective 09/18/2026 18:57

At 757 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 3 and 4 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. 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 areas, highways, streets and underpasses.

South Carolina Severe Severe Thunderstorm Warning | Effective 09/18/2026 18:58

SVRGSP The National Weather Service in Greenville-Spartanburg has issued a * Severe Thunderstorm Warning for... Abbeville County in Upstate South Carolina... Western Greenwood County in Upstate South Carolina... * Until 1045 PM EDT. * At 958 PM EDT, a severe thunderstorm was located 11 miles north of Abbeville, or near Due West, moving south at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. * Locations impacted include...

Colorado, Utah Severe Flash Flood Warning | Effective 09-18-2026 18:32

FFWGJT The National Weather Service in Grand Junction has extended the * Flash Flood Warning for... Southwestern Moffat County in northwestern Colorado... Western Rio Blanco County in northwestern Colorado... East Central Uintah County in northeastern Utah... * Until 945 PM MDT. * At 732 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1.5 to 3.5 inches in 1

Montana Severe Flash Flood Warning | Effective 09/18/2026 18:31

FFWBYZ The National Weather Service in Billings has extended the * Flash Flood Warning for... Southwestern Golden Valley County in central Montana... Southeastern Wheatland County in central Montana... * Until 1015 PM MDT. * At 731 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated.

Colorado, Utah Severe Flash Flood Warning | Effective 09/18/2026 18:32

FFWGJT The National Weather Service in Grand Junction has extended the * Flash Flood Warning for... Southwestern Moffat County in northwestern Colorado... Western Rio Blanco County in northwestern Colorado... East Central Uintah County in northeastern Utah... * Until 945 PM MDT. * At 732 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1.5 to 3.5 inches in 1
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