Heavy Rain and Thunderstorms in the Plains; Tropical Moisture Brings Heavy Rain to Southern California and Southwest

Heavy rain showers and thunderstorms, some severe, will persist across the Plains and Mississippi Valley through Friday. Increasing tropical moisture from the remnants of Mario will bring showers, thunderstorms, and a flash flooding threat across much of southern California into the Desert Southwest through Friday. Read More >

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Last Map Update: Wed, Sep 17, 2025 at 5:23:09 pm CDT

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National Weather Service Little Rock, AR

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Special Weather Statement

Hazardous Weather Outlook

Storm Chances Wednesday

Severe Potential Thursday

Heavy Rain Threat Thursday

Forecast Summary

Ft Smith Radar

Thunderstorm chances increase across eastern OK and northwest AR this afternoon and continue through Wednesday night. The greater potential this afternoon resides across western AR and then northwest of Interstate 44 Wednesday night. Isolated potential for a few strong to marginally severe storms exists with locally strong downburst winds the primary threat and also a heavy rain threat.

A marginal risk for severe weather is outlooked for Thursday across most of eastern OK and also northwest AR as a frontal boundary moves into the region. Locally damaging winds and large hail the are primary threats, while at the same time a threat for heavy rain also exists Thursday.

Thunderstorm chances are forecast to continue Thursday over eastern OK and northwest AR as an area of low pressure sets up over the Plains. At this time, a marginal risk for excessive rainfall exists across the region which could lead to flash flooding. The greater potential for a heavy rain threat is Thursday afternoon through late evening.

Unseasonably warm temperatures are expected Wednesday with periods of low to medium shower and thunderstorm chances through Friday. A trend toward near normal temperatures and an overall wetter pattern is forecast this weekend into early next week. Limited severe potential as well as a heavy rain threat exists through late week.

Ft Smith Radar (Ft Smith, Ar - KSRX)

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Heavy Rain and Thunderstorms in the Plains; Tropical Moisture Brings Heavy Rain to Southern California and Southwest

NWS Forecast Office Tulsa, OK