Right now
The most recent data we hold from NOAA arrived 2 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 3 August 2026 at 22:50 UTC. It is kept here as a record.
It is the 61st strongest of the 107 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 13 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 3 at 6:40PM EDT until August 3 at 6:45PM EDT by NWS Mount Holly NJ
Nearby, since 16 March 2026
- March 16, 2026 · score 22 · 3.8 km
- July 22, 2026 · score 34 · 9.2 km
- September 2, 2026 · score 32 · 12.6 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.71/1 |
| Coordinates | 38.9540, -74.9200 |
| Nearest City | Millville (51 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-08-03T22:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.92d78602ef32100551fc76a7a9df2da772d17337.001.1 |
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: 2026-08-03T22:40:00.000Z.
First archived: 2026-08-03T22:42:54.523Z. 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 | Delaware Bay waters south of East Point NJ to Slaughter Beach DE; 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 |
| Headline | Special Marine Warning issued August 3 at 6:40PM EDT until August 3 at 6:45PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-03T18:50:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 3.59 |
| Iem Unit | Inch |
| Iem City | 1 W Estell Manor |
| Iem County | Atlantic |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | Rainfall within the last 50 minutes. |
| MergedSources | [{"id":"iem_R_39.380_-74.830_1785792600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785792600000,"latitude":39.38,"longitude":-74.83},{"id":"iem_R_39.380_-74.830_1785790800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785790800000,"latitude":39.38,"longitude":-74.83},{"id":"iem_R_39.370_-74.850_1785791400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785791400000,"latitude":39.37,"longitude":-74.85}] |
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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