An Extreme Heat Warning is in effect across multiple Arkansas counties beginning August 19, 2026 at 12:28 PM CDT and running through August 19, 2026 at 9:00 PM CDT. The warning covers North and Central Sebastian, Jackson, Conway, St. Francis, Craighead, Lee, and Chicot counties. The alert was issued jointly by the National Weather Service offices in Tulsa OK, Little Rock AR, Memphis TN, and Jackson MS, reflecting the broad geographic scope of the heat event across the region.
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An Extreme Heat Warning is the highest-tier heat alert issued by the National Weather Service. It signals that conditions are dangerous enough to threaten lives, particularly for people who are elderly, very young, or who work or exercise outdoors.
What NWS Is Telling Arkansas Residents to Do Right Now
The National Weather Service is issuing clear, direct instructions for everyone in the affected counties. First and foremost: drink plenty of fluids. Hydration is the single most important factor in surviving extreme heat, and thirst alone is not a reliable early warning sign of dehydration during events like this.
Stay in an air-conditioned room for as much of this warning period as possible. If your home does not have air conditioning, the National Weather Service guidance points to staying indoors in a cooled space, which means libraries, community centers, or any other public building with reliable cooling can serve as a refuge. Stay out of the sun during the warning window, particularly during peak afternoon hours.
The NWS also emphasizes a community responsibility: check up on relatives and neighbors. This is especially important for people who live alone, who may not recognize their own heat-related distress until it becomes an emergency. A brief phone call or a knock on the door during a warning period like this one can be lifesaving.
For anyone who must be outside during the warning period, the National Weather Service directs residents to take extra precautions. Wear lightweight, loose-fitting clothing to help the body regulate its temperature. Limit strenuous activities to early morning or evening hours, when temperatures are lower. If you are working or recreating outdoors, plan your most demanding tasks around the edges of the day, not the middle of it.
Know the warning signs. The NWS guidance specifically calls on people to take action when they see symptoms of heat exhaustion and heat stroke. Heat exhaustion can present as heavy sweating, weakness, cold or pale skin, a weak pulse, and nausea. Heat stroke is more severe: the skin becomes hot and red, the pulse rapid and strong, and the person may become confused or lose consciousness. Heat stroke is a medical emergency. Call 911 immediately if you observe those symptoms in yourself or someone else.
Connecting This to Broader Preparedness
Extreme heat is the deadliest weather hazard in the United States on an annual basis, and events like this Arkansas warning underscore why heat preparedness deserves the same household-level planning as flood or severe storm readiness. At USRiskRadar, our evergreen guidance encourages residents in heat-prone regions to identify their nearest cooling center before a warning is issued, to keep an updated list of vulnerable neighbors and family members who may need a check-in, and to review their home’s cooling capacity each spring. The steps the National Weather Service outlines during an active warning, such as limiting outdoor activity, wearing appropriate clothing, and staying hydrated, are most effective when they are already part of a practiced routine rather than a last-minute reaction. Use this warning as a prompt to confirm your household plan is in place before the next event arrives.
Source: National Weather Service Tulsa OK, Little Rock AR, Memphis TN, and Jackson MS. Warning effective August 19, 2026, 12:28 PM CDT through August 19, 2026, 9:00 PM CDT.
For the fundamentals that apply beyond this specific alert, see our Extreme Heat Preparedness guide.
Source: National Weather Service (NWS Tulsa OK, NWS Little Rock AR, NWS Memphis TN, NWS Jackson MS). Active alert data retrieved 2026-08-19 22:01 UTC via api.weather.gov.
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