Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 10 June 2026 at 22:00 UTC. It is kept here as a record.
It is the 8th strongest of the 20 detections recorded within 20 km of this point since 16 May 2026. The last comparable one was on 16 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 4:02PM CDT until June 10 at 5:00PM CDT by NWS Green Bay WI
An estimated 586,663 people live within 50 km of this point.
Nearby, since 16 May 2026
- June 16, 2026 · score 48 · 16.2 km
- September 4, 2026 · score 41 · 17.0 km
- July 9, 2026 · score 48 · 18.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 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) | 41 / 100 |
| Our confidence | 80% |
| Coordinates | 43.3156, -87.4284 |
| Nearest City | Milwaukee (50 km) |
| Population Exposed | 586.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T21:02:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.ba53d52f3341594a9ab744f4e9fc414b |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake; Green Bay south of line from Oconto WI to Little Sturgeon Bay WI; Sturgeon Bay to Two Rivers WI; Two Rivers to Sheboygan WI; Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake; Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake and 4 more areas |
| Headline | Special Marine Warning issued June 10 at 4:02PM CDT until June 10 at 5:00PM CDT by NWS Green Bay WI |
| Expires | 2026-06-10T17:00:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ba53d52f3341594a9ab744f4e9fc414b0cae6cad.001.1","noaa_urn:oid:2.49.0.1.840.0.6492b1e0708e1f3a7d54b740d67d9f16a32a4114.001.1","noaa_urn:oid:2.49.0.1.840.0.53d274a2112fbcd0ba403b5589d5cfeb24191341.001.1","noaa_urn:oid:2.49.0.1.840.0.36af92dc1e71746d0bde9f441f162e3806f71c32.001.1","noaa_urn:oid:2.49.0.1.840.0.5327fff5e54dc18823f169ea308bb3c84704b53b.001.1","noaa_urn:oid:2.49.0.1.840.0.41a2e6b16ec1ce1fa4afb28784475c99f9f0042b.001.1","noaa_urn:oid:2.49.0.1.840.0.7426a4bcea40eb000358ad67bfb9d7f45f922c2d.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 in this area?
Calamity.live data shows a weather event with CalamityScore 41/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.