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 4 July 2026 at 02:15 UTC. It is kept here as a record.
No stronger detection stands among the 65 recorded within 20 km of this point since 22 March 2026 — 15 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 July 3 at 7:30PM MDT until July 3 at 8:15PM MDT by NWS Billings MT
An estimated 17,873 people live within 50 km of this point.
Nearby, since 22 March 2026
- June 22, 2026 · score 34 · 13.0 km
- July 19, 2026 · score 34 · 13.9 km
- June 26, 2026 · score 34 · 19.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 85 % 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 | 85% |
| Coordinates | 44.9114, -106.7686 |
| Nearest City | Sheridan (20 km) |
| Population Exposed | 17.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T01:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.3243f37ba177c1dcbb148bef450e66b948009997.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sheridan, WY |
| Headline | Severe Thunderstorm Warning issued July 3 at 7:30PM MDT until July 3 at 8:15PM MDT by NWS Billings MT |
| Expires | 2026-07-03T20:15:00-06:00 |
| SenderName | NWS Billings MT |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 12 NNW Wyarno |
| Iem County | Sheridan |
| Iem State | WY |
| Iem Wfo | BYZ |
| MergedSources | [{"id":"iem_H_44.980_-106.850_1783128180000","source":"iem","severity":"low","severityValue":25,"timestamp":1783128180000,"latitude":44.98,"longitude":-106.85}] |
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 Sheridan?