Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 13 km from here.
This alert is in force until 21 September 2026, 03:30 UTC.
It is the 36th strongest of the 49 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 20 September 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued September 20 at 7:31PM CDT until September 20 at 10:30PM CDT by NWS Tallahassee FL
Urban PEI: 77,403 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- September 12, 2026 · score 32 · 7.2 km
- September 11, 2026 · score 37 · 7.8 km
- May 30, 2026 · score 32 · 8.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.81/1 |
| Coordinates | 30.1492, -86.3675 |
| Nearest City | Santa Rosa Beach (31 km) |
| Urban exposure index (PEI) | 77.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-21T00:31:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.78464fb812776435979e3b55c5898b74fc99d336.001.1 |
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: 2026-09-21T00:31:00.000Z.
First archived: 2026-09-21T00:36:43.206Z. Material modification: 2026-09-21T00:47:34.973Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-21T00:52:55.256Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-21T00:47:34.973Z · data_change
Index 37 → 32; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM; St. Andrews Bay Waterways; Perdido Bay Area; Coastal waters from Pensacola FL to Pascagoula MS out 20 NM |
| Headline | Special Marine Warning issued September 20 at 7:31PM CDT until September 20 at 10:30PM CDT by NWS Tallahassee FL |
| Expires | 2026-09-20T22:30:00-05:00 |
| SenderName | NWS Tallahassee FL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.78464fb812776435979e3b55c5898b74fc99d336.001.1","noaa_urn:oid:2.49.0.1.840.0.8ab1ab0f9f0054cf6008ae34f276f37b51f37caa.001.1","noaa_urn:oid:2.49.0.1.840.0.150282d85aaa0e57cc6fd89c160401ab18ca3f7f.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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