Severe Thunderstorm Warning Issued for Northern Harper County, OK

Source: NOAA · Northern Harper County, Oklahoma

This alert is no longer in effect.

NOAA issued it on July 31, 2026, 3 weeks 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 has issued a Severe Thunderstorm Warning for northern Harper County in northwestern Oklahoma until 11:15 PM CDT.

Read this weather record in 30 seconds

Record type
Severe Thunderstorm Warning
Affected area
Northern Harper County, Oklahoma
Issued
July 31, 2026
Issuing authority
NWS Norman OK

Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.

Record status: historical. It was issued 3 weeks ago; use the issuing agency's live warning service for current conditions in Northern Harper County, Oklahoma.

Alert Details

A Severe Thunderstorm Warning has been issued by the National Weather Service in Norman OK. The alert is effective from 10:30 PM CDT on June 21, 2026, until 11:15 PM CDT on June 21, 2026.

Affected Areas

The warning covers Northern Harper County in northwestern Oklahoma, including the locations of Buffalo, Rosston, and Selman.

What You Should Do

For protection, move to an interior room on the lowest floor of a building. Seek shelter now inside a sturdy structure and stay away from windows. This is an extremely dangerous situation.

Expected Conditions

At 10:29 PM CDT, severe thunderstorms were located along a line extending from 9 miles southeast of Acres to 11 miles west of Buffalo to near Rosston, moving east at 40 mph. Hazards include 80 mph wind gusts and 1.50-inch hail. Impacts include dangerous flying debris, heavy damage to mobile homes, considerable damage to roofs, windows, and vehicles, extensive tree damage, and power outages.

Timeline

The warning is in effect until 11:15 PM CDT on June 21, 2026.

Original source: NOAA Official Notice ↗

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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.

Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
NWS Norman has issued a Severe Thunderstorm Warning for northern Harper County in northwestern Oklahoma until 11:15 PM CDT.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Northern Harper County, Oklahoma. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.