This alert expired on 16 May 2026 at 01:30 UTC. It is kept here as a record.
It is the 8th strongest of the 20 detections recorded within 20 km of this point since 31 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 15 at 7:43PM CDT until May 15 at 8:30PM CDT by NWS Norman OK
An estimated 84,223 people live within 50 km of this point.
Nearby, since 31 March 2026
- June 27, 2026 · score 48 · 14.3 km
- May 10, 2026 · score 48 · 16.7 km
- June 11, 2026 · score 41 · 18.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 79 % 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) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 35.6058, -98.1258 |
| Nearest City | El Reno (17 km) |
| Population Exposed | 84.2K within 50 km |
| Impact Tier | significant |
| Date | 2026-05-16 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.dcda163c6697579424a542b940875a7c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Caddo, OK; Canadian, OK; Grady, OK; Kingfisher, OK; Blaine, OK; Caddo, OK; Canadian, OK; Kingfisher, OK |
| Headline | Severe Thunderstorm Warning issued May 15 at 7:43PM CDT until May 15 at 8:30PM CDT by NWS Norman OK |
| Expires | 2026-05-15T20:30:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dcda163c6697579424a542b940875a7cd24a84c4.001.1","noaa_urn:oid:2.49.0.1.840.0.254ee3eeaa34e7de077eb92caf10ed7af78d3297.001.1"] |
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 39/100, near El Reno (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.