Right now
The most recent data we hold from NOAA arrived 4 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 5 August 2026 at 00:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 91 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 30 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 4 at 6:58PM EDT until August 4 at 8:00PM EDT by NWS Jacksonville FL
Urban PEI: 123,863 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- August 4, 2026 · score 43 · 0.0 km
- July 14, 2026 · score 43 · 0.8 km
- July 9, 2026 · score 43 · 9.6 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 29.6904, -81.0700 |
| Nearest City | Palm Coast (18 km) |
| Urban exposure index (PEI) | 123.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-04T22:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.c802d429dbdad55ca044742512af1a39 |
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: 2026-08-04T22:58:00.000Z.
First archived: 2026-08-04T23:18:48.560Z. 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 | Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM; Flagler Beach to Volusia-Brevard County Line 0-20 nm |
| Headline | Special Marine Warning issued August 4 at 6:58PM EDT until August 4 at 8:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-08-04T20:00:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c802d429dbdad55ca044742512af1a39861d05df.001.1","noaa_urn:oid:2.49.0.1.840.0.a4d338d9dbb2949b1235e3aaa98ec9b6f4d0bbed.002.1"] |
| Iem TypeSummary | E |
| Iem City | 5 NNW Edgewater |
| Iem County | Volusia |
| Iem State | FL |
| Iem Wfo | MLB |
| Iem Remark | Spotter reports 3 inches of water on roadways. |
| MergedSources | [{"id":"iem_G_29.180_-81.070_1785877080000","source":"iem","severity":"low","severityValue":25,"timestamp":1785877080000,"latitude":29.18,"longitude":-81.07},{"id":"iem_E_29.030_-80.930_1785881940000","source":"iem","severity":"low","severityValue":25,"timestamp":1785881940000,"latitude":29.03,"longitude":-80.93}] |
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.
Review the area, threshold and delivery channel in your account.
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