Right now
The most recent data we hold from NOAA arrived 7 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 4 September 2026 at 04:01 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 3 April 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 10:51PM CDT until September 3 at 11:00PM CDT by NWS Grand Forks ND
Nearby, since 3 April 2026
- June 19, 2026 · 17.7 km
How we know
2 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 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 |
| Legacy data-support index | 0.66/1 |
| Coordinates | 47.1730, -94.5425 |
| Nearest City | Hibbing (124 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-04T03:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1f8558d0643064b5eda176e3ed665dd69d6eab6f.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-04T03:51:00.000Z.
First archived: 2026-09-04T03:53:58.602Z. 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 | Hubbard, MN; Cass, MN |
| Headline | Severe Thunderstorm Warning issued September 3 at 10:51PM CDT until September 3 at 11:00PM CDT by NWS Grand Forks ND |
| Expires | 2026-09-03T23:01:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1f8558d0643064b5eda176e3ed665dd69d6eab6f.001.1","noaa_urn:oid:2.49.0.1.840.0.60ee673b2d4719364dcd2394e5c6a9ac651d3288.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 125 |
| Spc Location | 4 SSE Bagley |
| Spc County | Clearwater |
| Spc State | MN |
| Spc Comments | mPing of half dollar sized hail. (FGF) |
| MergedSources | [{"id":"spc_hail_47.15_-95.06_258","source":"spc","severity":"high","severityValue":65,"timestamp":1788494141147,"latitude":47.15,"longitude":-95.06},{"id":"spc_hail_47.47_-95.38_267","source":"spc","severity":"high","severityValue":65,"timestamp":1788490560000,"latitude":47.47,"longitude":-95.38}] |
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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