Right now
The most recent data we hold from NOAA arrived 6 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 18 July 2026 at 23:45 UTC. It is kept here as a record.
It is the 7th strongest of the 96 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 18 at 7:01PM EDT until July 18 at 7:45PM EDT by NWS Wakefield VA
Urban PEI: 211,604 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- August 28, 2026 · score 43 · 5.0 km
- August 3, 2026 · score 43 · 7.8 km
- August 3, 2026 · score 37 · 8.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.79/1 |
| Coordinates | 39.0960, -75.0418 |
| Nearest City | Millville (34 km) |
| Urban exposure index (PEI) | 211.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-18T23:01:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.d6b6018012fb2d67f192d936ac7faa84 |
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: 2026-07-18T23:01:00.000Z.
First archived: 2026-07-18T23:02:35.703Z. 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 Fenwick Island DE to Chincoteague VA out 20 NM; Coastal waters from Chincoteague to Parramore Island VA out 20 NM; Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM; Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 NM; Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM; Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM; Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ from 20 to 60 NM; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ from 20 to 60 NM; Waters from Great Egg Inlet NJ to Cape May NJ from 20 to 60 NM; Waters from Cape May NJ to Fenwick Island DE from 20 to 60 NM and 4 more areas |
| Headline | Special Marine Warning issued July 18 at 7:01PM EDT until July 18 at 7:45PM EDT by NWS Wakefield VA |
| Expires | 2026-07-18T19:45:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d6b6018012fb2d67f192d936ac7faa84f7f2bede.001.1","noaa_urn:oid:2.49.0.1.840.0.9c972edf592cda9a03eb4c5768d07fc0a5c805b8.001.1","noaa_urn:oid:2.49.0.1.840.0.e73c0bb4f95262f081d9d24bba30e3c1661f4f34.001.1","noaa_urn:oid:2.49.0.1.840.0.921f850b7491a33f593cd533512eee065a51f35a.001.1","noaa_urn:oid:2.49.0.1.840.0.34e75175e2b2778ca041d139fc41b5b950453620.001.1","noaa_urn:oid:2.49.0.1.840.0.740605d30fc3cbb1a54cb70e9428769ab1d0640b.001.1","noaa_urn:oid:2.49.0.1.840.0.77b1fd8a9a88d832c2e54c6e12ee969a88959b06.001.1"] |
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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