National Weather Service United States Department of Commerce

Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Click a location below for detailed forecast.

Last Map Update: Wed, May 20, 2026 at 3:14:33 am CDT

Isolated to scattered thunderstorms are forecast through Tuesday night. Severe weather is not expected. Be aware of heavy downpours and lightning hazard overnight.
A slight risk for excessive rainfall will develop Thursday over much of eastern OK and western AR. Rainfall amounts up to 2 inches will be fairly common with isolated amounts near 4 inches possible.
Radar loop from KSRX (Fort Smith, AR) Radar
Near daily thunderstorm chances are forecast this week and into the weekend. Cooler weather is expected through mid week with a warming trend into next weekend.
Latest Text Product Selector (Selected product opens in a new window)

Decision Support Winter Hazards Observations Climate Hydrology
 
 
Social Media Satellite Fire Weather Weather Radio Spotter Training Text Products
 
 
Models