National Weather Service United States Department of Commerce

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. this week. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England today. Read More >

Click a location below for detailed forecast.

Last Map Update: Wed, Jul 29, 2026 at 11:54:35 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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