This alert expired on 16 May 2026 at 06:30 UTC. It is kept here as a record.
It is the 7th strongest of the 77 detections recorded within 20 km of this point since 14 April 2026. The last comparable one was on 15 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 12:24AM CDT until May 16 at 1:30AM CDT by NWS Milwaukee/Sullivan WI
An estimated 327,280 people live within 50 km of this point.
Nearby, since 14 April 2026
- June 18, 2026 · score 43 · 2.7 km
- July 2, 2026 · score 67 · 13.5 km
- July 2, 2026 · score 67 · 19.5 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 | 43.0064, -89.8048 |
| Nearest City | Middleton (27 km) |
| Population Exposed | 327.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T05:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d05ee195d70eff19d6a6865fc855b092 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dane, WI; Green, WI; Rock, WI; Iowa, WI; Lafayette, WI |
| Headline | Severe Thunderstorm Warning issued May 16 at 12:24AM CDT until May 16 at 1:30AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-05-16T01:30:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d05ee195d70eff19d6a6865fc855b0927b3facb3.001.1","noaa_urn:oid:2.49.0.1.840.0.154f49b0832e76acefac13f7031a768e7798313a.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 Middleton?
Calamity.live data shows a weather event with CalamityScore 43/100, near Middleton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.