Right now
The most recent data we hold from NOAA arrived 9 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 9 May 2026 at 23:45 UTC. It is kept here as a record.
No stronger detection stands among the 57 recorded within 20 km of this point since 5 May 2026 — 22 others scored the same. Another comparable one was recorded here earlier the same day. 20 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 9 at 5:20PM MDT until May 9 at 5:45PM MDT by NWS Cheyenne WY
An estimated 65,132 people live within 50 km of this point.
Nearby, since 5 May 2026
- May 9, 2026 · score 39 · 3.8 km
- June 7, 2026 · score 39 · 6.3 km
- July 30, 2026 · score 39 · 12.1 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 89% |
| Coordinates | 41.1124, -104.4249 |
| Nearest City | Cheyenne (33 km) |
| Population Exposed | 65.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T23:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c9b639ff1af0cbe4a9b98f53938b186f |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Albany, WY; Laramie, WY; Platte, WY; Logan, CO; Weld, CO; Logan, CO; Morgan, CO; Weld, CO |
| Headline | Severe Thunderstorm Warning issued May 9 at 5:20PM MDT until May 9 at 5:45PM MDT by NWS Cheyenne WY |
| Expires | 2026-05-09T17:45:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c9b639ff1af0cbe4a9b98f53938b186f01a1d001.001.1","noaa_urn:oid:2.49.0.1.840.0.24641a46a06495f4c6072369a993284bc16b322b.001.1","noaa_urn:oid:2.49.0.1.840.0.55c841a8b4a9cb84214d285759853bd6a1063561.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 1 N Pine Bluffs |
| Iem County | Laramie |
| Iem State | WY |
| Iem Wfo | CYS |
| Iem Remark | Trained storm spotter reported ping-pong ball sized hail 1 mile north of Pine Bluff. |
| MergedSources | [{"id":"iem_H_41.190_-104.070_1778367000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778367000000,"latitude":41.19,"longitude":-104.07},{"id":"iem_H_41.190_-104.710_1778366460000","source":"iem","severity":"low","severityValue":25,"timestamp":1778366460000,"latitude":41.19,"longitude":-104.71},{"id":"iem_G_41.160_-104.700_1778367600000","source":"iem","severity":"low","severityValue":25,"timestamp":1778367600000,"latitude":41.16,"longitude":-104.7},{"id":"iem_H_41.200_-104.070_1778366760000","source":"iem","severity":"low","severityValue":25,"timestamp":1778366760000,"latitude":41.2,"longitude":-104.07}] |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.