Right now
The most recent data we hold from NOAA arrived 3 hours 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 6 June 2026 at 02:00 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 16 March 2026 — 9 others scored the same. The last comparable one was on 26 May 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 5 at 8:18PM CDT until June 5 at 9:00PM CDT by NWS Green Bay WI
Urban PEI: 124,457 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 30, 2026 · score 43 · 9.0 km
- July 27, 2026 · score 22 · 9.8 km
- July 1, 2026 · score 43 · 15.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 43 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 44.8530, -87.6575 |
| Nearest City | Green Bay (47 km) |
| Urban exposure index (PEI) | 124.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T01:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.10c68c7b1a1da94f5b1f4c813af28c12 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-06T01:18:00.000Z.
First archived: 2026-06-06T01:30:17.398Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI; Green Bay south of line from Oconto WI to Little Sturgeon Bay WI; Green Bay south of line from Oconto WI to Little Sturgeon Bay WI |
| Headline | Special Marine Warning issued June 5 at 8:18PM CDT until June 5 at 9:00PM CDT by NWS Green Bay WI |
| Expires | 2026-06-05T21:00:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.10c68c7b1a1da94f5b1f4c813af28c12973fa21c.001.1","noaa_urn:oid:2.49.0.1.840.0.8297e80d903104a01cc68e5d274b3d0502c00341.001.1"] |
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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