Severe

Significant threat to life or property

California Red Flag Warning | Effective 05/17/2026 12:07

* Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 45%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended.

Alaska Flood Watch | Effective 05/17/2026 12:07

* WHAT...Flooding caused by high water and heavy ice runs continues to be possible. * WHERE...Middle Yukon Valley. This includes the cities of Galena, Nulato, Kaltag, and Koyukuk. * WHEN...Until 10 PM AKDT this evening. * IMPACTS...High water may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - River Watch reports the Yukon River breakup front is approaching Grayling. High water and heavy ice runs along the Yukon River may result in flooding.

Alaska Flood Watch | Effective 05/17/2026 12:07

* WHAT...Flooding caused by high water and heavy ice runs may be possible. * WHERE...Including the following area, Grayling. * WHEN...Through Monday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - The breakup front along the Yukon River has moved downstream of Grayling. High water and runs of heavy ice from the Yuki River ice jam release has been causing rapid water level

Alaska Flood Watch | Effective 05/17/2026 12:07

* WHAT...Flooding caused by an ice jam continues to be possible. * WHERE...Buckland. * WHEN...Until 10 PM AKDT this evening. * IMPACTS...Water backing up behind the ice jam along with snowmelt in the region will result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Local reports from Buckland indicated an ice jam on the Buckland River above the community of Buckland. As of early

Florida Severe Thunderstorm Warning | Effective 05/17/2026 12:09

At 309 PM EDT, a severe thunderstorm was located over North Naples, or near Bonita Springs, moving south 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... Naples, Golden Gate Estates, Naples Park, West Toll Gate On Alligator Alley, Vineyards, Golden Gate, North Naples, East Naples, Pelican Bay, and Quail Creek Estate.

South Dakota Severe Thunderstorm Warning | Effective 05/17/2026 12:10

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southeastern Charles Mix County in south central South Dakota... Southeastern Gregory County in south central South Dakota... * Until 300 PM CDT. * At 209 PM CDT, a severe thunderstorm was located near Spencer, moving northeast at 55 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

Colorado Severe Thunderstorm Warning | Effective 05/17/2026 12:12

At 111 PM MDT, a severe thunderstorm was located 22 miles east of Rangely, or 52 miles southwest of Craig, moving northeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe thunderstorm will remain over mainly rural areas of north central Rio Blanco County. For your protection move to an interior room on the lowest floor of a building.

South Dakota Severe Thunderstorm Warning | Effective 05/17/2026 12:15

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southern Aurora County in south central South Dakota... North central Charles Mix County in south central South Dakota... Northwestern Douglas County in south central South Dakota... Southeastern Brule County in south central South Dakota... * Until 300 PM CDT. * At 215 PM CDT, a severe thunderstorm was located over Platte, or 22 miles northwest of Lake Andes, moving northeast at 35 mph.

Nebraska Severe Thunderstorm Warning | Effective 05/17/2026 12:18

At 217 PM CDT, a severe thunderstorm was located near Spencer, moving northeast at 45 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. This severe storm will be near... Gross around 220 PM CDT. Other locations impacted by this severe thunderstorm include Bristow,

Wisconsin Severe Thunderstorm Warning | Effective 05/17/2026 12:20

At 220 PM CDT, a severe thunderstorm was located over Howards Grove, moving northeast at 40 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Sheboygan, Plymouth, Sheboygan Falls, Howards Grove, Kohler, Waldo, Haven, and Johnsonville. For your protection move to an interior room on the lowest floor of a building.
Subscribe to RSS - Severe