This alert expired on 19 July 2026 at 23:36 UTC. It is kept here as a record.
It is the 3rd strongest of the 12 detections recorded within 20 km of this point since 10 June 2026. 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 19 at 6:26PM CDT until July 19 at 6:30PM CDT by NWS Bismarck ND
An estimated 96,474 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 81 % 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) | 39 / 100 |
| Our confidence | 81% |
| Coordinates | 46.4637, -101.0877 |
| Nearest City | Mandan (43 km) |
| Population Exposed | 96.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-19T23:26:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grant, ND; Morton, ND; Morton, ND; Sioux, ND |
| Headline | Severe Thunderstorm Warning issued July 19 at 6:26PM CDT until July 19 at 6:30PM CDT by NWS Bismarck ND |
| Expires | 2026-07-19T18:36:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7a238d7d229af059a007a2ba8d5a680db51ea8f6.001.1","noaa_urn:oid:2.49.0.1.840.0.00c1ca57a76e7a2395f4e35cbe57ae72083b701b.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 39/100, near Mandan (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.