Right now
The most recent data we hold from NOAA arrived 40 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 2 July 2026 at 07:15 UTC. It is kept here as a record.
It is the 7th strongest of the 18 detections recorded within 20 km of this point since 6 June 2026. The last comparable one was on 1 July 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 2 at 1:13AM CDT until July 2 at 2:15AM CDT by NWS Milwaukee/Sullivan WI
Nearby, since 6 June 2026
- July 8, 2026 · score 22 · 13.5 km
- June 6, 2026 · score 32 · 14.2 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.66/1 |
| Coordinates | 43.8381, -87.0692 |
| Nearest City | Sheboygan (52 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-02T06:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.b9b98e1bca36a71ee9868ac3fb932f09 |
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: 2026-07-02T06:13:00.000Z.
First archived: 2026-07-02T06:49:52.317Z. 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 | 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; Pentwater to Manistee MI; Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake |
| Headline | Special Marine Warning issued July 2 at 1:13AM CDT until July 2 at 2:15AM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-07-02T02:15:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b9b98e1bca36a71ee9868ac3fb932f090c40a088.001.1","noaa_urn:oid:2.49.0.1.840.0.4c851328aa898383d751c9bd44985ba38852f815.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 40 |
| Iem Unit | MPH |
| Iem City | 2 NNW Manitowoc |
| Iem County | Manitowoc |
| Iem State | WI |
| Iem Wfo | GRB |
| Iem Remark | AWOS station KMTW Manitowoc Airport. |
| MergedSources | [{"id":"iem_M_44.120_-87.670_1782972060000","source":"iem","severity":"low","severityValue":25,"timestamp":1782972060000,"latitude":44.12,"longitude":-87.67}] |
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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