This alert expired on 6 July 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 10 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. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 5 at 6:39PM CDT until July 5 at 7:15PM CDT by NWS Bismarck ND
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 57 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 57% |
| Coordinates | 47.7341, -102.5987 |
| Nearest City | Williston (89 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-05T23:39:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mountrail, ND; Billings, ND; Slope, ND; Renville, ND; Ward, ND and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 5 at 6:39PM CDT until July 5 at 7:15PM CDT by NWS Bismarck ND |
| Expires | 2026-07-05T19:15:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b4ba6c5cb8c67698a3a142a0b37acb42e33cc6e0.001.1","noaa_urn:oid:2.49.0.1.840.0.c0175f35cecaed9208686ba183db931fd51df071.001.1","noaa_urn:oid:2.49.0.1.840.0.d5a97dbb9a56def587994351927d1dfa971697a5.001.1","noaa_urn:oid:2.49.0.1.840.0.e5e3a71db6b15469b8b58abf95af128d1e6574f6.001.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 22/100, near Williston (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.