Right now
The most recent data we hold from NOAA arrived 30 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 21 September 2026 at 03:45 UTC. It is kept here as a record.
It is the 44th strongest of the 59 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued September 20 at 8:47PM CDT until September 20 at 10:45PM CDT by NWS Tallahassee FL
Urban PEI: 70,745 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- June 30, 2026 · score 34 · 5.9 km
- March 12, 2026 · score 39 · 7.1 km
- May 24, 2026 · score 34 · 8.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 32 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Legacy data-support index | 0.92/1 |
| Coordinates | 30.1239, -86.1585 |
| Nearest City | Santa Rosa Beach (31 km) |
| Urban exposure index (PEI) | 70.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-21T01:47:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.e22adbc21df666e400e430836a2e1f3a6b1c96d9.001.1 |
Physical priority index · v5. 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: 2026-09-21T01:47:00.000Z.
First archived: 2026-09-21T01:51:26.961Z. 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 | Waters from Okaloosa-Walton County Line to Mexico Beach from 20 to 60 NM; Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM; Western Choctawhatchee Bay; Eastern Choctawhatchee Bay; Coastal waters from Okaloosa-Walton County Line to Pensacola FL out 20 NM |
| Headline | Special Marine Warning issued September 20 at 8:47PM CDT until September 20 at 10:45PM CDT by NWS Tallahassee FL |
| Expires | 2026-09-20T22:45:00-05:00 |
| SenderName | NWS Tallahassee FL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e22adbc21df666e400e430836a2e1f3a6b1c96d9.001.1","noaa_urn:oid:2.49.0.1.840.0.770e31bb0ce743084a1ab72679973d5cee8ea61e.001.1","noaa_urn:oid:2.49.0.1.840.0.a6c61a284ec1395944c38d0db373cf6dea000dd2.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 WSW Mossy Head |
| Spc County | Walton |
| Spc State | FL |
| Spc Comments | Tree down on I-10 near mile marker 70. (TAE) |
| Iem TypeSummary | D |
| Iem City | 2 WSW Mossy Head |
| Iem County | Walton |
| Iem State | FL |
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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