Right now
The most recent data we hold from NOAA arrived 2 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 29 May 2026 at 23:45 UTC. It is kept here as a record.
No stronger detection stands among the 35 recorded within 20 km of this point since 5 May 2026 — 11 others scored the same. 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 29 at 5:18PM MDT until May 29 at 5:45PM MDT by NWS Cheyenne WY
Nearby, since 5 May 2026
- May 29, 2026 · score 22 · 0.0 km
- June 8, 2026 · score 22 · 25.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 63 % 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) | 22 / 100 |
| Our confidence | 63% |
| Coordinates | 41.8217, -104.2067 |
| Nearest City | Cheyenne (91 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-29T23:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c165d1be354e7133c16d1197901dcde92d33db0d.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Goshen, WY |
| Headline | Severe Thunderstorm Warning issued May 29 at 5:18PM MDT until May 29 at 5:45PM MDT by NWS Cheyenne WY |
| Expires | 2026-05-29T17:45:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.75 |
| Iem Unit | Inch |
| Iem City | 14 NNW Bushnell |
| Iem County | Banner |
| Iem State | NE |
| Iem Wfo | CYS |
| Iem Remark | Trained spotter reported penny-sized hail. |
| MergedSources | [{"id":"iem_H_41.430_-103.960_1780093920000","source":"iem","severity":"low","severityValue":25,"timestamp":1780093920000,"latitude":41.43,"longitude":-103.96}] |
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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