This alert expired on 2 September 2026 at 07:45 UTC. It is kept here as a record.
No stronger detection stands among the 30 recorded within 20 km of this point since 15 March 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 2 at 2:04AM CDT until September 2 at 2:45AM CDT by NWS La Crosse WI
An estimated 139,319 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 2, 2026 · score 49 · 10.9 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 49 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 49 / 100 |
| Our confidence | 91% |
| Coordinates | 43.9174, -91.9754 |
| Nearest City | Winona (31 km) |
| Population Exposed | 139.3K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-02T07:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b8798b55ea314cbd437673443113ee28f8773123.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fillmore, MN; Houston, MN; Wabasha, MN; Winona, MN; Buffalo, WI; Trempealeau, WI; Fillmore, MN; Olmsted, MN; Wabasha, MN |
| Headline | Severe Thunderstorm Warning issued September 2 at 2:04AM CDT until September 2 at 2:45AM CDT by NWS La Crosse WI |
| Expires | 2026-09-02T02:45:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b8798b55ea314cbd437673443113ee28f8773123.001.1","noaa_urn:oid:2.49.0.1.840.0.26b46c8f6c25feb30e23eed659e195476ddc9b8c.002.1"] |
| Spc ReportType | hail |
| Spc Speed | 150 |
| Spc Location | 6 ENE Pickwick |
| Spc County | Winona |
| Spc State | MN |
| Spc Comments | Multiple reports of 1 to 1.5 inch hail sizes. Time estimated from radar. (ARX) |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 6 ENE Pickwick |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 49/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.