National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Click a location below for detailed forecast.

Last Map Update: Wed, Jun 17, 2026 at 7:00:41 am CDT

Heat index values of 100 to 105 degrees are likely across E OK into W-Central AR this afternoon. Stay hydrated and take breaks in shade when spending time outdoors.
A marginal to slight risk for severe storms will exist late in the day Wednesday across portions of northeast Oklahoma as a frontal boundary works into the area. Large hail and damaging winds will be the main concerns.
A marginal risk for severe weather is forecast across much of eastern Oklahoma and northwest Arkansas Thursday afternoon and evening. Additional thunderstorms will remain possible overnight with a few strong to severe storms possible. Large hail and damaging wind gusts are the primary concerns.
There is a marginal to slight Risk (5-15% chance) of excessive rainfall Wednesday through Friday. Slow moving and training thunderstorms may produce areas of flash flooding.
Graphic depicts a 6-day forecast for select cities in eastern Oklahoma and western Arkansas, as well as details on hazards for the first 3 days and key weather messages.
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