Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 23 km from here.
This alert expired on 3 July 2026 at 06:45 UTC. It is kept here as a record.
No stronger detection stands among the 20 recorded within 20 km of this point since 14 May 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 12:02AM MDT until July 3 at 12:45AM MDT by NWS Glasgow MT
Urban PEI: 26,977 within a heuristic 50 km radius; not unique people.
Nearby, since 14 May 2026
- June 28, 2026 · score 34 · 15.7 km
- July 3, 2026 · score 34 · 23.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.78/1 |
| Coordinates | 48.3138, -104.2090 |
| Nearest City | Williston (47 km) |
| Urban exposure index (PEI) | 27.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T06:02:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6b0dbf3b700630013129eb602de45ede |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-03T06:02:00.000Z.
First archived: 2026-07-03T06:10:08.868Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sheridan, MT; Divide, ND; Williams, ND; Dawson, MT; McCone, MT; Richland, MT; Roosevelt, MT; Wibaux, MT |
| Headline | Severe Thunderstorm Warning issued July 3 at 12:02AM MDT until July 3 at 12:45AM MDT by NWS Glasgow MT |
| Expires | 2026-07-03T00:45:00-06:00 |
| SenderName | NWS Glasgow MT |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6b0dbf3b700630013129eb602de45edeec5edf6a.001.1","noaa_urn:oid:2.49.0.1.840.0.e51862f44a3a4f9bb82674f294b37c8b346ba8c1.001.1","noaa_urn:oid:2.49.0.1.840.0.4100aae87b9cda7d4a09a603b4e7d12c9b57cd84.001.1"] |
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.
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