This alert expired on 20 July 2026 at 13:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 26 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 20 at 7:27AM CDT until July 20 at 8:00AM CDT by NWS La Crosse WI
An estimated 67,962 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 9, 2026 · score 43 · 13.6 km
- June 30, 2026 · score 32 · 20.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 81 % 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) | 39 / 100 |
| Our confidence | 81% |
| Coordinates | 43.7083, -93.0558 |
| Nearest City | Austin (8 km) |
| Population Exposed | 68.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-20T12:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b2f58c16e708954257630c71b2a6c431 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mitchell, IA; Fillmore, MN; Mower, MN; Freeborn, MN |
| Headline | Severe Thunderstorm Warning issued July 20 at 7:27AM CDT until July 20 at 8:00AM CDT by NWS La Crosse WI |
| Expires | 2026-07-20T08:00:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b2f58c16e708954257630c71b2a6c43134b50227.001.1","noaa_urn:oid:2.49.0.1.840.0.697ccb4a805d08383b4f52485e120ecf5036fa58.002.1"] |
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 Austin?
Calamity.live data shows a weather event with CalamityScore 39/100, near Austin (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.