This alert expired on 26 June 2026 at 05:45 UTC. It is kept here as a record.
No stronger detection stands among the 22 recorded within 20 km of this point since 15 March 2026 — 5 others scored the same. The last comparable one was on 22 June 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 26 at 12:16AM CDT until June 26 at 12:45AM CDT by NWS Norman OK
An estimated 19,214 people live within 50 km of this point.
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 90% |
| Coordinates | 34.9567, -98.9933 |
| Nearest City | Altus (47 km) |
| Population Exposed | 19.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-26T05:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d0a2f42bbc40668d79776aea41262afba3ccfa29.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Beckham, OK; Caddo, OK; Comanche, OK; Greer, OK; Jackson, OK; Kiowa, OK; Tillman, OK; Washita, OK |
| Headline | Severe Thunderstorm Warning issued June 26 at 12:16AM CDT until June 26 at 12:45AM CDT by NWS Norman OK |
| Expires | 2026-06-26T00:45:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 68 |
| Iem Unit | MPH |
| Iem City | 5 SW Butler |
| Iem County | Custer |
| Iem State | OK |
| Iem Wfo | OUN |
| MergedSources | [{"id":"iem_G_34.830_-99.440_1782449400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782449400000,"latitude":34.83,"longitude":-99.44},{"id":"iem_G_34.910_-99.450_1782442080000","source":"iem","severity":"low","severityValue":25,"timestamp":1782442080000,"latitude":34.91,"longitude":-99.45},{"id":"iem_G_35.580_-99.250_1782435600000","source":"iem","severity":"low","severityValue":25,"timestamp":1782435600000,"latitude":35.58,"longitude":-99.25},{"id":"iem_G_35.580_-99.250_1782436200000","source":"iem","severity":"low","severityValue":25,"timestamp":1782436200000,"latitude":35.58,"longitude":-99.25},{"id":"iem_G_35.610_-99.120_1782437700000","source":"iem","severity":"low","severityValue":25,"timestamp":1782437700000,"latitude":35.61,"longitude":-99.12},{"id":"iem_G_35.580_-99.250_1782435900000","source":"iem","severity":"low","severityValue":25,"timestamp":1782435900000,"latitude":35.58,"longitude":-99.25}] |
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 8 March 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.