⚠️ Extreme Heat Warning – Washington; Nowata; Craig; Ottawa; Tulsa; Rogers; Mayes; Delaware; Creek; Okmulgee; Wagoner; Muskogee; Southeast Osage – Saturday, August 15, 2026

Extreme Heat Warning issued August 15 at 11:26AM CDT until August 16 at 8:00PM CDT by NWS Tulsa OK

Details

* WHAT…Heat index values from 110 to 115 are expected both Saturday
afternoon and Sunday afternoon. Overnight lows in the upper 70s to
locally, the mid 80s are expected Saturday night.

* WHERE…Portions of east central and northeast Oklahoma.

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

* IMPACTS…Heat related illnesses increase significantly during
extreme heat and high humidity events. Heat related illnesses are
possible especially impacting those not acclimated to the
conditions or those performing strenuous activities.

* ADDITIONAL DETAILS…Effects from this extended heat can accumulate
over the days, especially for those with limited access to air
conditioning given how warm the nights are staying. It is important
to check in on those vulnerable to heat.

Instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

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.