Right now
The most recent data we hold from NOAA arrived 5 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 27 June 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 56 recorded within 20 km of this point since 15 March 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 26 at 6:41PM MDT until June 26 at 7:15PM MDT by NWS Cheyenne WY
An estimated 32,649 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 30, 2026 · score 34 · 15.8 km
- July 29, 2026 · score 34 · 19.3 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 34 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 | Medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 88% |
| Coordinates | 44.3656, -105.5238 |
| Nearest City | Gillette (9 km) |
| Population Exposed | 32.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-27T00:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2876cd26a1996efe242f6916de456c4e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Niobrara, WY; Crook, WY; Weston, WY; Big Horn, MT; Powder River, MT; Sheridan, WY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 26 at 6:41PM MDT until June 26 at 7:15PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-26T19:15:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2876cd26a1996efe242f6916de456c4ecf451c7d.002.1","noaa_urn:oid:2.49.0.1.840.0.d40c8a0ee215ca24930b76d39f5b302f590648eb.002.1","noaa_urn:oid:2.49.0.1.840.0.d61317235161e182608bf2275d2981ea0dc95896.001.1","noaa_urn:oid:2.49.0.1.840.0.cfd761bf0a174552576296fb1c190e4029004dc7.002.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 70 |
| Iem Unit | mph |
| Iem City | 5 NNW Dwtn Gillette |
| Iem County | Campbell |
| Iem State | WY |
| Iem Wfo | UNR |
| MergedSources | [{"id":"iem_G_43.920_-105.980_1782516060000","source":"iem","severity":"low","severityValue":25,"timestamp":1782516060000,"latitude":43.92,"longitude":-105.98},{"id":"iem_G_43.920_-105.980_1782516600000","source":"iem","severity":"low","severityValue":25,"timestamp":1782516600000,"latitude":43.92,"longitude":-105.98},{"id":"iem_G_44.210_-105.810_1782514200000","source":"iem","severity":"low","severityValue":25,"timestamp":1782514200000,"latitude":44.21,"longitude":-105.81},{"id":"iem_G_44.470_-105.840_1782517320000","source":"iem","severity":"low","severityValue":25,"timestamp":1782517320000,"latitude":44.47,"longitude":-105.84},{"id":"iem_G_44.350_-105.540_1782516660000","source":"iem","severity":"low","severityValue":25,"timestamp":1782516660000,"latitude":44.35,"longitude":-105.54}] |
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 Gillette?
Calamity.live data shows a weather event with CalamityScore 34/100, near Gillette (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.