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 10 July 2026 at 02:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 28 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 9 at 9:16PM EDT until July 9 at 10:15PM EDT by NWS Mount Holly NJ
Urban PEI: 32,899 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 22, 2026 · score 58 · 16.0 km
- September 13, 2026 · score 28 · 16.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 38.1777, -75.4653 |
| Nearest City | Salisbury (23 km) |
| Urban exposure index (PEI) | 32.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-10T01:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.63522d1fc33ae6cd70db71571284371f |
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: 2026-07-10T01:16:00.000Z.
First archived: 2026-07-10T01:27:26.007Z. 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 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; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Fenwick Island DE to Chincoteague VA out 20 NM; Coastal waters from Chincoteague to Parramore Island VA out 20 NM; Waters from Fenwick Island DE to Chintoteague VA from 20 to 60 NM; Waters from Chincoteague VA to Parramore Island VA from 20 to 60 NM and 1 more areas |
| Headline | Special Marine Warning issued July 9 at 9:16PM EDT until July 9 at 10:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-09T22:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.63522d1fc33ae6cd70db71571284371f5140dd48.001.1","noaa_urn:oid:2.49.0.1.840.0.076557b4483e70e248946e9935d2006a7eb3ba2b.002.1","noaa_urn:oid:2.49.0.1.840.0.cdedd591115eaf58b93d15f6612093a50938fdc6.001.1","noaa_urn:oid:2.49.0.1.840.0.0e71277ad6c50daded3866113aaca9ac9151b433.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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