This alert expired on 14 June 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 59 recorded within 20 km of this point since 17 April 2026 — 4 others scored the same. 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: Tornado Warning issued June 13 at 6:54PM CDT until June 13 at 7:15PM CDT by NWS Norman OK
An estimated 24,758 people live within 50 km of this point.
Nearby, since 17 April 2026
- August 7, 2026 · score 28 · 16.7 km
- July 4, 2026 · score 34 · 18.9 km
- July 11, 2026 · score 39 · 19.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 58 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 80% |
| Coordinates | 36.8183, -97.4267 |
| Nearest City | Ponca City (32 km) |
| Population Exposed | 24.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-13T23:54:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4cb394481f83e5ee1d4f43d176d4d2aecf581997.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grant, OK; Kay, OK |
| Headline | Tornado Warning issued June 13 at 6:54PM CDT until June 13 at 7:15PM CDT by NWS Norman OK |
| Expires | 2026-06-13T19:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.