National Weather Service United States Department of Commerce

Severe Thunderstorm Threat Increasing This Week from the High Plains to Gulf Coast

A storm system will move from the Rockies to the East Coast during the next several days bringing a severe thunderstorm threat to many parts of the nation. On Thursday, large hail will be the main threat in the High Plains. By Friday a more widespread threat will develop in the ArkLaTex region where damaging winds, very large hail and tornadoes will be possible. Read More >

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Last Map Update: Thu, Mar. 23, 2017 at 5:29:34 am CDT

National Weather Service Tulsa, OKNational Weather Service Little Rock, ARNational Weather Service Memphis, TN
National Weather Service Fort Worth/Dallas, TXZoom
Out

National Weather Service Jackson, Mississippi
National Weather Service Houston/Galveston, TXNational Weather Service Lake Charles, LANational Weather Service New Orleans/Baton Rouge

 

Low clouds and patchy fog will spread northward from southern LA to near/across the Interstate 20 corridor this morning before scouring by mid-morning. Skies will clear by the afternoon and a retreating warm front will allow for the return of above normal warmth.
There is a Slight Risk of severe thunderstorms across the entire Four-state Region on Friday. Wind damage, isolated large hail and a tornado threat is forecast Friday and Friday night. Convection should gradually organize into a line of storms being strongly forced by the Southern Plains upper-level low disturbance. The line of storms is forecast to move from west to east initially affecting east TX and southeast OK late afternoon, to across the remaining ARKLATEX by early evening into the overnight hours.
An upper level low pressure system will shift across central sections of the country Friday and Saturday with an associated surface low pressure area trailing a dryline that will help produce a line of showers and thunderstorms across the Four State Region. Moderate to heavy rainfall will be possible. Note in the rainfall graphic, the heavies rainfall of 1-1.5 inches is expected across portions of east TX, southeast OK, northern LA and southwest AR.
The National Weather Service defines a severe thunderstorm as measured wind gusts to at least 58 MPH, and/or hail to at least one inch in diameter, and/or a tornado. All thunderstorm categories imply lightning and the potential for flooding. Categories are also tied to the probability of a severe weather event within 25 miles of your location.
A Lake Wind Advisory is in effect from noon today through 7 pm CDT this evening across east TX, deep east TX and southeast OK. South to southeast wind speeds will increase to 15-20 mph making for rough chop on area lakes so use caution!
Climate Data for 03/23/2017

 

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