Right now
The most recent data we hold from NOAA arrived 44 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 22:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 39 detections recorded within 20 km of this point since 8 June 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 29 at 4:44PM CDT until June 29 at 5:00PM CDT by NWS Bismarck ND
Nearby, since 8 June 2026
- September 7, 2026 · score 46 · 24.6 km
How we know
7 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 47.8449, -100.6262 |
| Nearest City | Minot (66 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-29T21:44:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.651871f3fb6c3bb71778a9580dfbf715 |
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: 2026-06-29T21:44:00.000Z.
First archived: 2026-06-29T21:54:20.313Z. 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; Burleigh, ND; Kidder, ND; McHenry, ND |
| Headline | Severe Thunderstorm Warning issued June 29 at 4:44PM CDT until June 29 at 5:00PM CDT by NWS Bismarck ND |
| Expires | 2026-06-29T17:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.651871f3fb6c3bb71778a9580dfbf715c025b697.002.1","noaa_urn:oid:2.49.0.1.840.0.63e36a5fd7cb2e566ac16d36af8c483857c4ca9a.001.1","noaa_urn:oid:2.49.0.1.840.0.a864f945945146c8dbaa31c6c0c4cd5e3bde037d.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 125 |
| Spc Location | 5 SSW Max |
| Spc County | McLean |
| Spc State | ND |
| Spc Comments | US Air Force Observer reported half dollar size hail near Max. Hail fell for around 12 minutes. Also reports torrential rainfall. (BIS) |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | 5 SSW Max |
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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