Right now
The most recent data we hold from NOAA arrived 1 minute 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 6 July 2026 at 04:00 UTC. It is kept here as a record.
It is the 5th strongest of the 176 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 5 July 2026. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 5 at 9:58PM EDT until July 6 at 12:00AM EDT by NWS Mount Holly NJ
Urban PEI: 194,918 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- May 27, 2026 · score 43 · 4.5 km
- July 28, 2026 · score 67 · 5.1 km
- June 11, 2026 · score 37 · 9.2 km
How we know
2 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 | 0.85/1 |
| Coordinates | 39.2722, -75.7448 |
| Nearest City | Middletown (20 km) |
| Urban exposure index (PEI) | 194.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T01:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.5e41a640de5cfded30050f4f3c58371e |
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: 2026-07-06T01:58:00.000Z.
First archived: 2026-07-06T02:21:23.180Z. 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 north of East Point NJ to Slaughter Beach DE; Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chester River to Queenstown MD; Eastern Bay |
| Headline | Special Marine Warning issued July 5 at 9:58PM EDT until July 6 at 12:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-06T00:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5e41a640de5cfded30050f4f3c58371e34430045.001.1","noaa_urn:oid:2.49.0.1.840.0.47865e620af770d103fa530ba3ceff472de7bfb5.001.1"] |
| Iem TypeSummary | D |
| Iem City | Smyrna |
| Iem County | Kent |
| Iem State | DE |
| Iem Wfo | PHI |
| Iem Remark | Several trees down in Smyrna with a couple of them blocking roadways. |
| MergedSources | [{"id":"iem_D_39.300_-75.610_1783293480000","source":"iem","severity":"low","severityValue":25,"timestamp":1783293480000,"latitude":39.3,"longitude":-75.61}] |
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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