National Weather Service United States Department of Commerce

Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

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Last Map Update: Wed, Jul 29, 2026 at 9:18:45 am CDT

Dangerous heat conditions are forecast again Wednesday across much of the region. An Extreme Heat Warning and Heat Advisory are in effect from Noon to 9 PM for heat index values from 105 to 115 degrees across eastern Oklahoma and west-central Arkansas.
Dangerous heat continues across portions of the area through Friday, with heat index values of 105 to 115 degrees expected. Slightly cooler conditions will develop this weekend areawide.
During Extreme Heat: Find air conditioning. Avoid strenuous activities. Wear light clothing. Check on family members and neighbors. Drink plenty of water. Watch for heat cramps, exhaustion, and stroke. Never leave people or pets in a closed car.
Low to moderate shower and thunderstorm chances exist today through tonight, across parts of far eastern Oklahoma and northwest Arkansas. Severe weather is not expected, but gusty winds and moderate rain may accompany the strongest storms.
KSRX Radar (Fort Smith, AR).
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