Right now
The most recent data we hold from NOAA arrived 13 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 04:15 UTC. It is kept here as a record.
No stronger detection stands among the 18 recorded within 20 km of this point since 30 May 2026 — 9 others scored the same.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 29 at 10:23PM CDT until May 29 at 11:15PM CDT by NWS Norman OK
An estimated 19,214 people live within 50 km of this point.
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 89 % 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 | 89% |
| Coordinates | 34.8533, -99.7800 |
| Nearest City | Altus (47 km) |
| Population Exposed | 19.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T03:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.44da82730b1aea3b0a274466326babebd3846f1c.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Greer, OK; Harmon, OK; Jackson, OK |
| Headline | Severe Thunderstorm Warning issued May 29 at 10:23PM CDT until May 29 at 11:15PM CDT by NWS Norman OK |
| Expires | 2026-05-29T23:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 70 |
| Iem Unit | MPH |
| Iem City | 1 NE Memphis |
| Iem County | Hall |
| Iem State | TX |
| Iem Wfo | LUB |
| Iem Remark | Also gust to 58 mph at 641 PM. Measured by the West Texas Mesonet. |
| MergedSources | [{"id":"iem_G_35.080_-100.390_1780108140000","source":"iem","severity":"low","severityValue":25,"timestamp":1780108140000,"latitude":35.08,"longitude":-100.39},{"id":"iem_D_34.730_-100.540_1780098120000","source":"iem","severity":"low","severityValue":25,"timestamp":1780098120000,"latitude":34.73,"longitude":-100.54},{"id":"iem_G_34.740_-100.530_1780098180000","source":"iem","severity":"low","severityValue":25,"timestamp":1780098180000,"latitude":34.74,"longitude":-100.53}] |
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.
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