This alert expired on 3 July 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 17 recorded within 20 km of this point since 27 April 2026 — 8 others scored the same. The last comparable one was on 2 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 2 at 7:11PM CDT until July 2 at 8:15PM CDT by NWS Milwaukee/Sullivan WI
An estimated 1,202,682 people live within 50 km of this point.
Nearby, since 27 April 2026
- September 3, 2026 · score 46 · 1.1 km
- August 9, 2026 · score 52 · 10.0 km
- June 16, 2026 · score 52 · 11.4 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 88 % 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 | 88% |
| Coordinates | 43.0849, -87.6403 |
| Nearest City | Milwaukee (22 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T00:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.aa63eeb3698265703956903510f1210b |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Sheboygan to Port Washington WI; Port Washington to North Point Light WI; Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake; Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake; Wind Point WI to Winthrop Harbor IL; Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake; Port Washington to North Point Light WI; North Point Light to Wind Point WI; Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake; Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake |
| Headline | Special Marine Warning issued July 2 at 7:11PM CDT until July 2 at 8:15PM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-07-02T20:15:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.aa63eeb3698265703956903510f1210b8bb00cd6.001.1","noaa_urn:oid:2.49.0.1.840.0.f6a48184773e5085aea5b0db21dbb4a74bd4913b.001.1","noaa_urn:oid:2.49.0.1.840.0.19f845e4da7a5edade07935edc47e5f3347ca633.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 3 ESE Jackson |
| Iem County | Washington |
| Iem State | WI |
| Iem Wfo | MKX |
| Iem Remark | Trained spotter reports 1 inch diameter hail in Jackson. |
| Google News RssFeed | weather |
| Google News SourceName | WTMJ |
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 Milwaukee?
Calamity.live data shows a weather event with CalamityScore 52/100, near Milwaukee (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.