Right now
The most recent data we hold from NOAA arrived 14 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 19:00 UTC. It is kept here as a record.
No stronger detection stands among the 10 recorded within 20 km of this point since 18 May 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 1 at 2:50PM EDT until July 1 at 3:00PM EDT by NWS Gaylord MI
How we know
5 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 | 0.70/1 |
| Coordinates | 44.1329, -83.1188 |
| Nearest City | Bay City (86 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-01T18:50:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.80ab41706cac0648e108b0b1baa66797 |
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: 2026-07-01T18:50:00.000Z.
First archived: 2026-07-01T18:56:01.078Z. 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 | Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border; Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay; Inner Saginaw Bay SW of Point Au Gres to Bay Port MI |
| Headline | Special Marine Warning issued July 1 at 2:50PM EDT until July 1 at 3:00PM EDT by NWS Gaylord MI |
| Expires | 2026-07-01T15:00:00-04:00 |
| SenderName | NWS Gaylord MI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.80ab41706cac0648e108b0b1baa66797aed8b363.002.1","noaa_urn:oid:2.49.0.1.840.0.7600b38f95b4c2306ef2c9ebf29cc437c9feb436.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 SE Curtisville |
| Iem County | Alcona |
| Iem State | MI |
| Iem Wfo | APX |
| Iem Remark | Power lines down. Time estimated. |
| MergedSources | [{"id":"iem_D_44.480_-83.850_1782926100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782926100000,"latitude":44.48,"longitude":-83.85},{"id":"iem_M_44.410_-83.320_1782927900000","source":"iem","severity":"low","severityValue":25,"timestamp":1782927900000,"latitude":44.41,"longitude":-83.32},{"id":"iem_M_44.250_-83.460_1782928380000","source":"iem","severity":"low","severityValue":25,"timestamp":1782928380000,"latitude":44.25,"longitude":-83.46},{"id":"iem_D_44.530_-83.820_1782925680000","source":"iem","severity":"low","severityValue":25,"timestamp":1782925680000,"latitude":44.53,"longitude":-83.82}] |
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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