Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is in it.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert is in force until 8 September 2026, 04:00 UTC.
It is the 14th strongest of the 77 detections recorded within 20 km of this point since 2 June 2026. The last comparable one was on 7 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 7 at 8:34PM CDT until September 7 at 11:00PM CDT by NWS Bismarck ND
Nearby, since 2 June 2026
- September 7, 2026 · score 16 · 0.0 km
- August 31, 2026 · score 22 · 0.0 km
- August 11, 2026 · score 22 · 0.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 71 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 71% |
| Coordinates | 47.5000, -100.5000 |
| Nearest City | Bismarck (80 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-08T01:34:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.75b498b765ceab6baa2c5d97908c3b0dd6d160d6.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Bottineau, ND; McHenry, ND; Pierce, ND; Renville, ND; Rolette, ND; Wells, ND; Benson, ND; Ramsey, ND; Towner, ND |
| Headline | Severe Thunderstorm Watch issued September 7 at 8:34PM CDT until September 7 at 11:00PM CDT by NWS Bismarck ND |
| Expires | 2026-09-07T23:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.75b498b765ceab6baa2c5d97908c3b0dd6d160d6.002.1","noaa_urn:oid:2.49.0.1.840.0.0d1b6a25380cf626d025a7276bfe08be229edfa8.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | 4 SSW Ruso |
| Spc County | McLean |
| Spc State | ND |
| Spc Comments | Photo relayed from broadcast media. (BIS) |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 4 SSW Ruso |
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?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.