This alert expired on 4 September 2026 at 08:32 UTC. It is kept here as a record.
No stronger detection stands among the 49 recorded within 20 km of this point since 13 March 2026 — one other scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 4 at 3:22AM CDT until September 4 at 3:30AM CDT by NWS Milwaukee/Sullivan WI
An estimated 869,526 people live within 50 km of this point.
Nearby, since 13 March 2026
- July 9, 2026 · score 48 · 2.5 km
- June 25, 2026 · score 52 · 10.9 km
- June 18, 2026 · score 48 · 11.6 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 54 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 54 / 100 |
| Our confidence | 91% |
| Coordinates | 43.4638, -87.9654 |
| Nearest City | West Bend (18 km) |
| Population Exposed | 869.5K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-04T08:22:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c8a1fb98887ee739eeb4897fbfc7b4beeb49dc7a.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dodge, WI; Fond du Lac, WI; Ozaukee, WI; Sheboygan, WI; Washington, WI |
| Headline | Severe Thunderstorm Warning issued September 4 at 3:22AM CDT until September 4 at 3:30AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-09-04T03:32:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | Mayville |
| Spc County | Dodge |
| Spc State | WI |
| Spc Comments | Relay report from NWSChat. (MKX) |
| Google News RssFeed | weather |
| Google News SourceName | WTMJ |
| MergedSources | [{"id":"spc_wind_43.26_-88.19_6","source":"spc","severity":"medium","severityValue":45,"timestamp":1788509958636,"latitude":43.26,"longitude":-88.19},{"id":"spc_wind_43.41_-88.53_259","source":"spc","severity":"medium","severityValue":45,"timestamp":1788496200000,"latitude":43.41,"longitude":-88.53},{"id":"spc_wind_43.46_-88.56_260","source":"spc","severity":"medium","severityValue":45,"timestamp":1788496620000,"latitude":43.46,"longitude":-88.56},{"id":"spc_wind_43.80_-88.44_275","source":"spc","severity":"medium","severityValue":45,"timestamp":1788501180000,"latitude":43.8,"longitude":-88.44},{"id":"spc_wind_43.75_-88.45_278","source":"spc","severity":"medium","severityValue":45,"timestamp":1788501300000,"latitude":43.75,"longitude":-88.45},{"id":"spc_hail_43.50_-88.56_302","source":"spc","severity":"high","severityValue":65,"timestamp":1788496080000,"latitude":43.5,"longitude":-88.56},{"id":"spc_hail_43.50_-88.55_303","source":"spc","severity":"high","severityValue":65,"timestamp":1788496320000,"latitude":43.5,"longitude":-88.55},{"id":"gnews_weather_496805_240","source":"google_news","severity":"medium","severityValue":40,"timestamp":1788499109000,"latitude":43.04,"longitude":-87.91}] |
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 West Bend?
Calamity.live data shows a weather event with CalamityScore 54/100, near West Bend (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.