This alert expired on 6 June 2026 at 01:45 UTC. It is kept here as a record.
It is the 4th strongest of the 59 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 5 at 8:15PM CDT until June 5 at 8:45PM CDT by NWS La Crosse WI
An estimated 148,338 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 2, 2026 · score 49 · 5.7 km
- July 1, 2026 · score 43 · 12.1 km
- June 20, 2026 · score 43 · 14.3 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 80 % 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 | 80% |
| Coordinates | 44.0520, -91.5300 |
| Nearest City | Winona (9 km) |
| Population Exposed | 148.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T01:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5c9a5127a12268423ffe30226b4b73e7039bedc1.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Winona, MN; Buffalo, WI; Trempealeau, WI |
| Headline | Severe Thunderstorm Warning issued June 5 at 8:15PM CDT until June 5 at 8:45PM CDT by NWS La Crosse WI |
| Expires | 2026-06-05T20:45:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
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 Winona?
Calamity.live data shows a weather event with CalamityScore 43/100, near Winona (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.