This alert expired on 15 March 2026 at 06:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 286 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Snow Squall Warning issued March 15 at 12:20AM 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 12 March 2026
- August 30, 2026 · score 39 · 9.5 km
- June 25, 2026 · score 63 · 10.9 km
- March 12, 2026 · score 39 · 17.0 km
How we know
Confirmed by 18 independent sources, including NOAA.
Our own score for this event is 45 out of 100, at 88 % 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 | High |
| Calamity Score (ours) | 45 / 100 |
| Our confidence | 88% |
| Coordinates | 41.1500, -104.9133 |
| Nearest City | Cheyenne (8 km) |
| Population Exposed | 65.1K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-15T06:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_85b0b37f503bdcd54e7589f90908b6b67fdba509_001_1 |
Score Breakdown
Technical Details
| Event | Snow Squall Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Albany, WY; Laramie, WY |
| Headline | Snow Squall Warning issued March 15 at 12:20AM 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 |
| Iem TypeSummary | q |
| Iem City | 6 SW South Greeley High |
| Iem County | Laramie |
| Iem State | WY |
| Iem Wfo | CYS |
| Iem Remark | Snow squall ongoing at KWYH. Winds in excess of 50mph, near 0 visibility with falling and blowing snow. |
| MergedSources | [{"id":"iem_N_41.120_-105.340_1773552600000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552600000,"latitude":41.12,"longitude":-105.34},{"id":"iem_N_41.650_-104.850_1773534720000","source":"iem","severity":"low","severityValue":25,"timestamp":1773534720000,"latitude":41.65,"longitude":-104.85},{"id":"iem_N_41.100_-105.210_1773553320000","source":"iem","severity":"low","severityValue":25,"timestamp":1773553320000,"latitude":41.1,"longitude":-105.21},{"id":"iem_N_41.160_-105.400_1773553320000","source":"iem","severity":"low","severityValue":25,"timestamp":1773553320000,"latitude":41.16,"longitude":-105.4},{"id":"iem_N_41.310_-105.450_1773550800000","source":"iem","severity":"low","severityValue":25,"timestamp":1773550800000,"latitude":41.31,"longitude":-105.45},{"id":"iem_N_41.130_-105.340_1773552720000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552720000,"latitude":41.13,"longitude":-105.34},{"id":"iem_q_41.150_-104.800_1773553200000","source":"iem","severity":"low","severityValue":25,"timestamp":1773553200000,"latitude":41.15,"longitude":-104.8},{"id":"iem_N_41.050_-104.890_1773552360000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552360000,"latitude":41.05,"longitude":-104.89},{"id":"iem_q_41.050_-104.890_1773552480000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552480000,"latitude":41.05,"longitude":-104.89},{"id":"iem_N_41.050_-105.470_1773552720000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552720000,"latitude":41.05,"longitude":-105.47},{"id":"iem_q_41.150_-104.800_1773552300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552300000,"latitude":41.15,"longitude":-104.8},{"id":"iem_q_41.160_-105.400_1773552240000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552240000,"latitude":41.16,"longitude":-105.4},{"id":"iem_N_41.120_-105.340_1773552660000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552660000,"latitude":41.12,"longitude":-105.34},{"id":"iem_N_41.200_-105.430_1773552960000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552960000,"latitude":41.2,"longitude":-105.43},{"id":"iem_N_41.230_-105.430_1773552420000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552420000,"latitude":41.23,"longitude":-105.43},{"id":"iem_N_41.110_-105.340_1773552660000","source":"iem","severity":"low","severityValue":25,"timestamp":1773552660000,"latitude":41.11,"longitude":-105.34},{"id":"iem_q_41.050_-104.890_1773553200000","source":"iem","severity":"low","severityValue":25,"timestamp":1773553200000,"latitude":41.05,"longitude":-104.89}] |
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 45/100, near Cheyenne (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.