Lala Impacting Hawaii; Severe Thunderstorm and Flash Flooding Risks; Excessive Heat

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorm, heavy rainfall, and flash flooding threats continue from the Midwest to the Mid-Atlantic and across the central High Plains. Record heat continues for areas of the central/southern Plain into the Southeast Read More >

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Last Map Update: Mon, Aug 17, 2026 at 1:08:46 pm CDT

Watches, Warnings & Advisories

National Weather Service Wichita, Kansas

National Weather Service Springfield, MO

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National Weather Service Little Rock, AR

National Weather Service Fort Worth/Dallas, TX

Severe Thunderstorm Warning

Extreme Heat Warning

Heat Advisory

Special Weather Statement

Hazardous Weather Outlook

Heat Advisory Monday

Dangerous Heat Persists Through Midweek

100 Degree-Day Streak Info

Severe Weather Outlook Monday

Severe Storm Timing Monday

Forecast Summary

A Heat Advisory is in effect from 11 AM to 8 PM Monday for east-central and southeast OK as well as west-central AR. Heat indices between 105 and 110 degrees are expected. A front will take the edge off of the heat across NE OK and NW AR.

High heat stress conditions will persist through the middle of the week. Heat stress will continue to impact outdoor activities. Some minor heat relief is forecast during the latter part of the week.

Tulsa, Fort Smith and Fayetteville are all in the midst of a multi-day stretch featuring triple digit high temperatures with more forecast. How does the current stretch of 100's stack up all-time? Fayetteville has officially cracked the Top 5 as of August 16th and Fort Smith is within striking distance.

Isolated thunderstorms are expected to develop this afternoon across SE OK. Locally strong to severe downburst winds will be the main threat with storms that develop.

Here is the expected time window for potential severe storms across SE OK this afternoon.

Hot temperatures continue through the weekend with isolated to scattered thunderstorm potential late Sunday afternoon into Monday. Slightly cooler for some on Monday but back to the hot weather Tuesday.

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Lala Impacting Hawaii; Severe Thunderstorm and Flash Flooding Risks; Excessive Heat

NWS Forecast Office Tulsa, OK