Right now
The most recent data we hold from SPC arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
6 other detections within 20 km in the last 24 hours, the nearest 1 km from here.
Reported by SPC 21 days ago.
No stronger detection stands among the 81 recorded within 20 km of this point since 4 April 2026 — 77 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Hail 100 in near 4 S Garrison, McLean, ND. Fort Stevenson State Park. (BIS)
Nearby, since 4 April 2026
- September 6, 2026 · score 28 · 11.6 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
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 | 0.42/1 |
| Coordinates | 47.6000, -101.4200 |
| Nearest City | Minot (71 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-07T01:34:19.382Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
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: spc. Occurrence: 2026-09-07T01:34:19.382Z.
First archived: 2026-09-07T01:33:21.523Z. 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
| ReportType | hail |
| Speed | 100 |
| Location | 4 S Garrison |
| County | McLean |
| State | ND |
| Comments | Fort Stevenson State Park. (BIS) |
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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