⚠️ Heat Advisory – North and Central Sebastian; Southern Crawford; Central and Southern Franklin; Southern Sebastian; Okfuskee; Okmulgee; Muskogee; McIntosh; Pittsburg; Haskell; Latimer; Northern Le Flore; Central and Southern Sequoyah; Central Le Flore; Southern Le Flore – Thursday, August 20, 2026

Event	Heat Advisory
Severity	Moderate
Urgency	Expected
Certainty	Likely
Area	North and Central Sebastian; Southern Crawford; Central and Southern Franklin; Southern Sebastian; Okfuskee; Okmulgee; Muskogee; McIntosh; Pittsburg; Haskell; Latimer; Northern Le Flore; Central and Southern Sequoyah; Central Le Flore; Southern Le Flore
Effective	8/20/2026, 12:12:00 PM CDT
Expires	8/21/2026, 1:00:00 AM CDT

Heat Advisory issued August 20 at 12:12PM CDT until August 21 at 8:00PM CDT by NWS Tulsa OK

Details

* WHAT…Heat index values up to 109 expected.

* WHERE…Portions of northwest and west central Arkansas and east
central, northeast, and southeast Oklahoma.

* WHEN…For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from noon to 8 PM CDT Friday.

* IMPACTS…Heat related illnesses are possible especially impacting
those not acclimated to the conditions or those performing
strenuous activities.

Instructions

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.