This alert expired on 2 September 2026 at 07:15 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 15 March 2026 — 4 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 1:26AM CDT until September 2 at 2:15AM CDT by NWS La Crosse WI
An estimated 186,163 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 2, 2026 · score 49 · 12.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 49 out of 100, at 86 % 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 | 86% |
| Coordinates | 44.0080, -92.7848 |
| Nearest City | Rochester (25 km) |
| Population Exposed | 186.2K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-02T06:26:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.356175126940abefb786e05059c37701874b8397.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dodge, MN; Fillmore, MN; Mower, MN; Olmsted, MN; Wabasha, MN; Dodge, MN |
| Headline | Severe Thunderstorm Warning issued September 2 at 1:26AM CDT until September 2 at 2:15AM CDT by NWS La Crosse WI |
| Expires | 2026-09-02T02:15:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.356175126940abefb786e05059c37701874b8397.001.1","noaa_urn:oid:2.49.0.1.840.0.e7d8b549cb332a51f30e5f068ccd16928e7a6f16.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 3 S Waldorf |
| Spc County | Waseca |
| Spc State | MN |
| Spc Comments | quarter sized hail reported on spotter network. (MPX) |
| MergedSources | [{"id":"spc_hail_43.89_-93.70_154","source":"spc","severity":"high","severityValue":65,"timestamp":1788323940000,"latitude":43.89,"longitude":-93.7}] |
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 near Rochester?
Calamity.live data shows a weather event with CalamityScore 49/100, near Rochester (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.