This alert expired on 15 March 2026 at 06:30 UTC. It is kept here as a record.
It is the 4th strongest of the 272 detections recorded within 20 km of this point since 14 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Snow Squall Warning issued March 14 at 11:39PM MDT until March 15 at 12:30AM MDT by NWS Cheyenne WY
An estimated 65,132 people live within 50 km of this point.
Nearby, since 14 March 2026
- August 30, 2026 · score 39 · 4.4 km
- March 15, 2026 · score 45 · 8.7 km
- August 27, 2026 · score 45 · 12.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 83 % 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 | 83% |
| Coordinates | 41.1863, -104.8213 |
| Nearest City | Cheyenne (5 km) |
| Population Exposed | 65.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T05:39:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Snow-Squall-Warning_noaa_urn-oid-2_49_0_1_840_0_4efbb9c0c37ada2fe2742d2fbdae2982 |
Score Breakdown
Technical Details
| Event | Snow Squall Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Banner, NE; Kimball, NE; Albany, WY; Laramie, WY; Kimball, NE; Albany, WY; Laramie, WY |
| Headline | Snow Squall Warning issued March 14 at 11:39PM MDT until March 15 at 12:30AM MDT by NWS Cheyenne WY |
| Expires | 2026-03-15T00:30:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4efbb9c0c37ada2fe2742d2fbdae2982000c2027.001.1","noaa_urn:oid:2.49.0.1.840.0.b211a0c4d34211cfd79516148f0246cf4628224c.001.1"] |
| Iem TypeSummary | N |
| Iem Magnitude | 61 |
| Iem Unit | MPH |
| Iem City | 8 S Chugwater |
| Iem County | Laramie |
| Iem State | WY |
| Iem Wfo | CYS |
| Iem Remark | WYDOT sensor at Bear Creek. |
| MergedSources | [{"id":"iem_N_41.650_-104.850_1773534720000","source":"iem","severity":"low","severityValue":25,"timestamp":1773534720000,"latitude":41.65,"longitude":-104.85}] |
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 Cheyenne?
Calamity.live data shows a weather event with CalamityScore 39/100, near Cheyenne (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.