Right now
The most recent data we hold from NOAA arrived 37 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 3 July 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 48 recorded within 20 km of this point since 15 March 2026 — 13 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 2:59PM MDT until July 3 at 4:15PM MDT by NWS Rapid City SD
How we know
Confirmed by 11 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 67 % 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) | 22 / 100 |
| Our confidence | 67% |
| Coordinates | 44.2388, -104.4862 |
| Nearest City | Gillette (81 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-03T20:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.923d21477dd753657d0a028a5cd70779 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Weston, WY; Crook, WY |
| Headline | Severe Thunderstorm Warning issued July 3 at 2:59PM MDT until July 3 at 4:15PM MDT by NWS Rapid City SD |
| Expires | 2026-07-03T16:15:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.923d21477dd753657d0a028a5cd70779f4177cc0.001.1","noaa_urn:oid:2.49.0.1.840.0.562d1ef3c75581170e085fac6215a971e84c9b14.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | inch |
| Iem City | Sundance |
| Iem County | Crook |
| Iem State | WY |
| Iem Wfo | UNR |
| Iem Remark | mPING report |
| MergedSources | [{"id":"iem_H_44.400_-104.370_1783107600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783107600000,"latitude":44.4,"longitude":-104.37},{"id":"iem_H_44.070_-104.370_1783111620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783111620000,"latitude":44.07,"longitude":-104.37},{"id":"iem_H_44.650_-104.600_1783109700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783109700000,"latitude":44.65,"longitude":-104.6},{"id":"iem_H_44.510_-103.860_1783098600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783098600000,"latitude":44.51,"longitude":-103.86},{"id":"iem_H_44.400_-104.370_1783107300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783107300000,"latitude":44.4,"longitude":-104.37},{"id":"iem_H_44.510_-103.890_1783098180000","source":"iem","severity":"low","severityValue":25,"timestamp":1783098180000,"latitude":44.51,"longitude":-103.89},{"id":"iem_H_44.490_-103.860_1783098780000","source":"iem","severity":"low","severityValue":25,"timestamp":1783098780000,"latitude":44.49,"longitude":-103.86},{"id":"iem_H_44.500_-103.860_1783098360000","source":"iem","severity":"low","severityValue":25,"timestamp":1783098360000,"latitude":44.5,"longitude":-103.86},{"id":"iem_H_44.500_-103.860_1783098300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783098300000,"latitude":44.5,"longitude":-103.86},{"id":"iem_H_44.400_-104.370_1783107360000","source":"iem","severity":"low","severityValue":25,"timestamp":1783107360000,"latitude":44.4,"longitude":-104.37}] |
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?