Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 30 May 2026 at 05:15 UTC. It is kept here as a record.
No stronger detection stands among the 32 recorded within 20 km of this point since 1 April 2026 — 22 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 29 at 11:25PM CDT until May 30 at 12:15AM CDT by NWS Norman OK
An estimated 19,214 people live within 50 km of this point.
Nearby, since 1 April 2026
- May 30, 2026 · score 34 · 14.7 km
- June 12, 2026 · score 28 · 15.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 84 % 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 | 84% |
| Coordinates | 34.7636, -99.5689 |
| Nearest City | Altus (26 km) |
| Population Exposed | 19.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T04:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5daf2fab45836cb5ddbb00c5eec95550 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Greer, OK; Harmon, OK; Jackson, OK; Kiowa, OK; Washita, OK; Hardeman, TX; Greer, OK; Harmon, OK; Jackson, OK; Kiowa, OK; Hardeman, TX |
| Headline | Severe Thunderstorm Warning issued May 29 at 11:25PM CDT until May 30 at 12:15AM CDT by NWS Norman OK |
| Expires | 2026-05-30T00:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5daf2fab45836cb5ddbb00c5eec95550d4466915.001.1","noaa_urn:oid:2.49.0.1.840.0.5085005ace74a283b583cae07b99efb7d22f72f9.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 63 |
| Iem Unit | MPH |
| Iem City | 3 W Gould |
| Iem County | Harmon |
| Iem State | OK |
| Iem Wfo | OUN |
| MergedSources | [{"id":"iem_G_34.670_-99.830_1780112700000","source":"iem","severity":"low","severityValue":25,"timestamp":1780112700000,"latitude":34.67,"longitude":-99.83}] |
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 near Altus?
Calamity.live data shows a weather event with CalamityScore 34/100, near Altus (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.