Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 29 June 2026 at 23:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 132 detections recorded within 20 km of this point since 9 June 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 29 at 5:30PM CDT until June 29 at 6:00PM CDT by NWS Bismarck ND
Urban PEI: 49,450 within a heuristic 50 km radius; not unique people.
Nearby, since 9 June 2026
- June 29, 2026 · score 40 · 2.7 km
- June 9, 2026 · score 58 · 16.0 km
- September 4, 2026 · score 40 · 18.5 km
How we know
8 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 40 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 40 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 48.3662, -100.8475 |
| Nearest City | Minot (37 km) |
| Urban exposure index (PEI) | 49.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-29T22:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ff7cfccd5e50fe5917dbac34459eed4547413df7.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-29T22:30:00.000Z.
First archived: 2026-06-29T22:48:24.247Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | McHenry, ND; Ward, ND |
| Headline | Severe Thunderstorm Warning issued June 29 at 5:30PM CDT until June 29 at 6:00PM CDT by NWS Bismarck ND |
| Expires | 2026-06-29T18:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 225 |
| Spc Location | Max |
| Spc County | McLean |
| Spc State | ND |
| Spc Comments | Relayed through broadcast media. (BIS) |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 3 NNE Simcoe |
| Iem County | McHenry |
| Iem State | ND |
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.
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