Right now
The most recent data we hold from NOAA arrived 6 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 1 July 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 23 recorded within 20 km of this point since 17 May 2026 — 19 others scored the same. The last comparable one was on 17 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 30 at 7:28PM CDT until June 30 at 8:30PM CDT by NWS Green Bay WI
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 58 % 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) | 22 / 100 |
| Our confidence | 58% |
| Coordinates | 44.4566, -86.9286 |
| Nearest City | Manitowoc (71 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-01T00:28:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.96a66e1e376aa2554ef7c81933f64427 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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; Point Betsie to Sleeping Bear Point MI; Manistee to Point Betsie MI; Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake; Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake |
| Headline | Special Marine Warning issued June 30 at 7:28PM CDT until June 30 at 8:30PM CDT by NWS Green Bay WI |
| Expires | 2026-06-30T20:30:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.96a66e1e376aa2554ef7c81933f64427d999b3e4.001.1","noaa_urn:oid:2.49.0.1.840.0.d08caea8bd872703ac66787309d2e49c69cfdecc.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.
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