This alert expired on 12 August 2026 at 01:18 UTC. It is kept here as a record.
No stronger detection stands among the 22 recorded within 20 km of this point since 1 April 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 8:08PM CDT until August 11 at 8:15PM 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 59 % 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 | 59% |
| Coordinates | 45.8649, -102.2192 |
| Nearest City | Dickinson (121 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-12T01:08:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dunn, ND; Grant, ND; Morton, ND; Sioux, ND; Morton, ND and 6 more areas |
| Headline | Severe Thunderstorm Warning issued August 11 at 8:08PM CDT until August 11 at 8:15PM CDT by NWS Bismarck ND |
| Expires | 2026-08-11T20:18:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5abde709d3b586ec0257a79f343b5467df844091.001.1","noaa_urn:oid:2.49.0.1.840.0.5c4e3963316acacfaba10ab12ba1ba087f34f0b8.001.1","noaa_urn:oid:2.49.0.1.840.0.93fbdad06caf52102d44b5006c71d1490cc3fdc6.001.1","noaa_urn:oid:2.49.0.1.840.0.e1deff9f7b706a6c4647fe42c0b6e4f6dee5b299.001.1","noaa_urn:oid:2.49.0.1.840.0.c17844b9bff093dc0663d3dcf863426e0505113f.001.1","noaa_urn:oid:2.49.0.1.840.0.8440d71f162e4ce169319d0a7abb3549a694f467.001.1","noaa_urn:oid:2.49.0.1.840.0.2489aa5dadb372a679dc1fab66a6564ad8eb9cae.002.1","noaa_urn:oid:2.49.0.1.840.0.1f2dcc1b2276ca86df813da6a9c9f350c3a27435.001.1","noaa_urn:oid:2.49.0.1.840.0.0bfe560b828f387e01a6846f3c68955256f1626a.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 Dickinson (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.