Right now
The most recent data we hold from NOAA arrived 14 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 15:30 UTC. It is kept here as a record.
No stronger detection stands among the 23 recorded within 20 km of this point since 15 March 2026 — 6 others scored the same. The last comparable one was on 23 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 29 at 9:28AM CDT until June 29 at 10:30AM CDT by NWS Grand Forks ND
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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 | Medium |
| Calamity Score (ours) | 22 / 100 |
| Legacy data-support index | 0.65/1 |
| Coordinates | 46.1800, -96.6688 |
| Nearest City | Moorhead (77 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-29T14:28:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1d05cea447b631021e58a6c71f587817783c5878.001.1 |
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: 2026-06-29T14:28:00.000Z.
First archived: 2026-06-29T14:53:00.099Z. 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 | Clay, MN; Grant, MN; Otter Tail, MN; Wilkin, MN; Cass, ND; Richland, ND; Sargent, ND |
| Headline | Severe Thunderstorm Warning issued June 29 at 9:28AM CDT until June 29 at 10:30AM CDT by NWS Grand Forks ND |
| Expires | 2026-06-29T10:30:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | 69 |
| Spc Location | 1 W Sica Hollow |
| Spc County | Marshall |
| Spc State | SD |
| Spc Comments | Mesonet station SHMS2 Sica Hollow (SD Mesonet). (ABR) |
| MergedSources | [{"id":"spc_wind_45.74_-97.25_9","source":"spc","severity":"medium","severityValue":45,"timestamp":1782742200000,"latitude":45.74,"longitude":-97.25}] |
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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