This alert expired on 3 July 2026 at 06:00 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 27 April 2026 — 16 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 3 at 12:21AM CDT until July 3 at 1:00AM CDT by NWS Chicago IL
An estimated 5,872,801 people live within 50 km of this point.
Nearby, since 27 April 2026
- August 10, 2026 · score 52 · 7.4 km
- July 27, 2026 · score 52 · 8.4 km
- August 10, 2026 · score 52 · 10.3 km
How we know
Confirmed by 3 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 | 42.1720, -87.4690 |
| Nearest City | Evanston (23 km) |
| Population Exposed | 5.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T05:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4049821cf576909f5b22c5434d8040ea0ecc2c28.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake; Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake |
| Headline | Special Marine Warning issued July 3 at 12:21AM CDT until July 3 at 1:00AM CDT by NWS Chicago IL |
| Expires | 2026-07-03T01:00:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| Google News RssFeed | weather |
| Google News SourceName | ABC7 Chicago |
| MergedSources | [{"id":"gnews_weather_495289_198","source":"google_news","severity":"medium","severityValue":40,"timestamp":1783042371000,"latitude":41.85,"longitude":-87.65},{"id":"gnews_weather_495290_208","source":"google_news","severity":"medium","severityValue":40,"timestamp":1783047004000,"latitude":41.85,"longitude":-87.65}] |
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 Evanston?
Calamity.live data shows a weather event with CalamityScore 52/100, near Evanston (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.