This alert expired on 27 June 2026 at 05:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 19 detections recorded within 20 km of this point since 31 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 26 at 11:50PM CDT until June 27 at 12:00AM CDT by NWS Norman OK
An estimated 855,369 people live within 50 km of this point.
Nearby, since 31 March 2026
- May 16, 2026 · score 39 · 14.3 km
- June 27, 2026 · score 48 · 16.0 km
- June 22, 2026 · score 72 · 20.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 85% |
| Coordinates | 35.6770, -97.9940 |
| Nearest City | El Reno (17 km) |
| Population Exposed | 855.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-27T04:50:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8d4d16869fc9ac3a23bcd37059519c2d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Blaine, OK; Canadian, OK; Kingfisher, OK; Canadian, OK; Kingfisher, OK; Logan, OK; Oklahoma, OK |
| Headline | Severe Thunderstorm Warning issued June 26 at 11:50PM CDT until June 27 at 12:00AM CDT by NWS Norman OK |
| Expires | 2026-06-27T00:00:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8d4d16869fc9ac3a23bcd37059519c2dba6de3c4.001.1","noaa_urn:oid:2.49.0.1.840.0.d75487f9fc201a77f26ca9970d791cbd4fecdd2e.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 3 WSW Guthrie |
| Iem County | Logan |
| Iem State | OK |
| Iem Wfo | OUN |
| MergedSources | [{"id":"iem_H_35.870_-97.480_1782528000000","source":"iem","severity":"low","severityValue":25,"timestamp":1782528000000,"latitude":35.87,"longitude":-97.48}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 48/100, near El Reno (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.