This alert expired on 16 May 2026 at 07:01 UTC. It is kept here as a record.
No stronger detection stands among the 64 recorded within 20 km of this point since 16 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 1:51AM CDT until May 16 at 2:00AM CDT by NWS Milwaukee/Sullivan WI
An estimated 1,145,858 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 3, 2026 · score 46 · 3.0 km
- July 3, 2026 · score 52 · 7.3 km
- July 2, 2026 · score 52 · 11.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 43.2753, -88.1598 |
| Nearest City | Germantown (6 km) |
| Population Exposed | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T06:51:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8179f5b6dfddf620e44e2f34daf668af |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jefferson, WI; Walworth, WI; Sheboygan, WI |
| Headline | Severe Thunderstorm Warning issued May 16 at 1:51AM CDT until May 16 at 2:00AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-05-16T02:01:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8179f5b6dfddf620e44e2f34daf668afc5b9f530.001.1","noaa_urn:oid:2.49.0.1.840.0.22fd36eb15cdcbc88a5a6285ebedaeb41652cbad.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 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 Germantown?
Calamity.live data shows a weather event with CalamityScore 52/100, near Germantown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.