This alert expired on 2 July 2026 at 02:00 UTC. It is kept here as a record.
It is the 5th strongest of the 20 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 23 June 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 8:25PM CDT until July 1 at 9:00PM CDT by NWS Twin Cities/Chanhassen MN
An estimated 206,543 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 45 · 17.7 km
- June 23, 2026 · score 67 · 18.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 77 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 77% |
| Coordinates | 44.1073, -93.0627 |
| Nearest City | Owatonna (14 km) |
| Population Exposed | 206.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-02T01:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.12911b05064342db5084118bebfe6c9c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Blue Earth, MN; Le Sueur, MN; Waseca, MN; Olmsted, MN; Wabasha, MN; Winona, MN |
| Headline | Severe Thunderstorm Warning issued July 1 at 8:25PM CDT until July 1 at 9:00PM CDT by NWS Twin Cities/Chanhassen MN |
| Expires | 2026-07-01T21:00:00-05:00 |
| SenderName | NWS Twin Cities/Chanhassen MN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.12911b05064342db5084118bebfe6c9c47b90e2c.001.1","noaa_urn:oid:2.49.0.1.840.0.3525a5c2dc8b4b5699ad6ebfdd3e193bcecc241e.001.1"] |
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 10 February 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 Owatonna?
Calamity.live data shows a weather event with CalamityScore 43/100, near Owatonna (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.