Extreme Heat Warning Issued for Central and Southern Oklahoma
This alert is no longer in effect.
NOAA issued it on August 18, 2026, 5 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Norman OK has issued an Extreme Heat Warning for portions of central, east central, northern, southeast, and southern Oklahoma with heat index values up to 110.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Central, East Central, Northern, Southeast, and Southern Oklahoma
- Issued
- August 18, 2026
- Issuing authority
- NWS Norman OK
Heat notices are time-bound and location-specific. Confirm the current forecast and local public-health guidance before relying on this archived record.
Record status: historical. It was issued 5 days ago; use the issuing agency's live warning service for current conditions in Central, East Central, Northern, Southeast, and Southern Oklahoma.
Alert Details
Extreme Heat Warning issued by NWS Norman OK. The alert is effective from August 18 at 11:32 AM CDT and covers two periods.
Affected Areas
Portions of central, east central, northern, southeast, and southern Oklahoma including Grant, Kay, Garfield, Noble, Kingfisher, Logan, Payne, Canadian, Oklahoma, Lincoln, Grady, McClain, Cleveland, Pottawatomie, Seminole, Hughes, Stephens, Garvin, Murray, Pontotoc, Coal, Jefferson, Carter, Johnston, Atoka, Love, Marshall, and Bryan counties.
What You Should Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Expected Conditions
Dangerously hot conditions with heat index values up to 110.
Timeline
The first Extreme Heat Warning remains in effect until 8 PM CDT on August 18. The second Extreme Heat Warning is in effect from 11 AM to 8 PM CDT on August 19.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (904 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 18, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.