Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
This alert expired on 8 September 2026 at 00:15 UTC. It is kept here as a record.
It is the 45th strongest of the 74 detections recorded within 20 km of this point since 8 June 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 7 at 6:23PM CDT until September 7 at 7:15PM CDT by NWS Bismarck ND
An estimated 49,450 people live within 50 km of this point.
Nearby, since 8 June 2026
- September 7, 2026 · score 28 · 0.0 km
- August 10, 2026 · score 34 · 4.8 km
- June 28, 2026 · score 34 · 11.2 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 85 % 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 | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 85% |
| Coordinates | 47.8467, -101.0800 |
| Nearest City | Minot (46 km) |
| Population Exposed | 49.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-07T23:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.57fb1a63dcafbb0e2ff4a1d01e87fc4a9e080a13.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | McHenry, ND; McLean, ND; Sheridan, ND; Ward, ND |
| Headline | Severe Thunderstorm Warning issued September 7 at 6:23PM CDT until September 7 at 7:15PM CDT by NWS Bismarck ND |
| Expires | 2026-09-07T19:15:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 1.1 |
| Iem Unit | Inch |
| Iem City | 2 WNW Balfour |
| Iem County | McHenry |
| Iem State | ND |
| Iem Wfo | BIS |
| Iem Remark | AWOS station K1AN 2 WNW Balfour. |
| MergedSources | [{"id":"iem_R_48.420_-101.330_1788805560000","source":"iem","severity":"low","severityValue":25,"timestamp":1788805560000,"latitude":48.42,"longitude":-101.33},{"id":"iem_R_48.250_-101.270_1788807240000","source":"iem","severity":"low","severityValue":25,"timestamp":1788807240000,"latitude":48.25,"longitude":-101.27},{"id":"iem_R_47.970_-100.580_1788807300000","source":"iem","severity":"low","severityValue":25,"timestamp":1788807300000,"latitude":47.97,"longitude":-100.58}] |
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.