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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 16 March 2026 at 21:00 UTC. It is kept here as a record.
It is the 4th strongest of the 14 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 16 at 2:54PM EDT until March 16 at 5:00PM EDT by NWS Charleston SC
Urban PEI: 82,893 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- July 5, 2026 · score 43 · 15.2 km
- March 16, 2026 · score 43 · 16.9 km
- July 13, 2026 · score 39 · 17.9 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.83/1 |
| Coordinates | 29.7042, -80.7239 |
| Nearest City | Palm Coast (49 km) |
| Urban exposure index (PEI) | 82.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T18:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.1e9225f138036b5cbf52c2816755b3fd |
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: 2026-03-16T18:54:00.000Z.
First archived: 2026-03-16T19:00:32.321Z. 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 Savannah GA to Altamaha Sound GA extending from 20 nm to 60 nm; Coastal waters from Edisto Beach SC to Savannah GA out 20 nm; Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm ...including Grays Reef National Marine Sanctuary; Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM; Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM; Coastal waters from St. Augustine to Flagler Beach FL out 20 NM; Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM; Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM; Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM and 7 more areas |
| Headline | Special Marine Warning issued March 16 at 2:54PM EDT until March 16 at 5:00PM EDT by NWS Charleston SC |
| Expires | 2026-03-16T17:00:00-04:00 |
| SenderName | NWS Charleston SC |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1e9225f138036b5cbf52c2816755b3fd9f8c698f.001.1","noaa_urn:oid:2.49.0.1.840.0.44060733a2533e9a96cd61ba7fc9b29364536d52.001.1","noaa_urn:oid:2.49.0.1.840.0.c814dad0196bd6fd16a670a23c6003d2751cc603.001.1","noaa_urn:oid:2.49.0.1.840.0.ebfa47444dc960945c1cf9a927cab0e90d4a227e.001.1","noaa_urn:oid:2.49.0.1.840.0.a4a7fe1aab29c52b2ac3c70d6aa74b04d513d94a.001.1","noaa_urn:oid:2.49.0.1.840.0.2d8c56d21b86803136d0ec25a9a675fb17a42f15.001.1","noaa_urn:oid:2.49.0.1.840.0.80badf546f5a4c0b66e6a55751e98c6f9782a6fa.001.1","noaa_urn:oid:2.49.0.1.840.0.c66d4d7bd6ddd2b45c7472d5698739a9de081e04.001.1","noaa_urn:oid:2.49.0.1.840.0.45cf1fa3a131907f55e736ff54bb480e9a222c9c.001.1","noaa_urn:oid:2.49.0.1.840.0.8725fee0f76b42eb4b769c89bf817a19b68ad471.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 48 |
| Iem Unit | MPH |
| Iem City | 4 E Bunnell |
| Iem County | Flagler |
| Iem State | FL |
| Iem Wfo | JAX |
| Iem Remark | AWOS station KFIN Flagler Cnty measured a 48 mph gust. |
| MergedSources | [{"id":"iem_G_29.470_-81.200_1773687000000","source":"iem","severity":"low","severityValue":25,"timestamp":1773687000000,"latitude":29.47,"longitude":-81.2}] |
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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