Right now
The most recent data we hold from NOAA arrived 5 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 July 2026 at 02:30 UTC. It is kept here as a record.
It is the 68th strongest of the 95 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 9:46PM EDT until July 4 at 10:30PM EDT by NWS Mount Holly NJ
Urban PEI: 419,792 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- March 17, 2026 · score 43 · 2.7 km
- July 5, 2026 · score 43 · 5.5 km
- September 2, 2026 · score 58 · 7.9 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 | 39.4693, -74.9516 |
| Nearest City | South Vineland (7 km) |
| Urban exposure index (PEI) | 419.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T01:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.916e4d8fc823b4b72dd27d1a13a83774 |
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: 2026-07-05T01:46:00.000Z.
First archived: 2026-07-05T01:49:36.494Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Burlington, NJ; Hunterdon, NJ; Mercer, NJ; Middlesex, NJ; Monmouth, NJ; Somerset, NJ; Bucks, PA; Atlantic, NJ; Cape May, NJ; Cumberland, NJ; Ocean, NJ; Dorchester, MD; Somerset, MD; Wicomico, MD and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 9:46PM EDT until July 4 at 10:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-04T22:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.916e4d8fc823b4b72dd27d1a13a837748a9a08c9.002.1","noaa_urn:oid:2.49.0.1.840.0.eaba08f6af603ffd72866b53d0a1f50de3dded45.001.1","noaa_urn:oid:2.49.0.1.840.0.edc4ceb937e0b777313819cec3b2b116d2f02439.001.1","noaa_urn:oid:2.49.0.1.840.0.4cfe9f7055aaee9bd8c6d4537d3af3a9b4d8f7fd.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 65 |
| Iem Unit | MPH |
| Iem City | 2 WSW Folsom |
| Iem County | Atlantic |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | EM in Collings Lakes reports gusts 60-65 MPH. Multiple trees and wires down around the area. Time estimated from radar. |
| MergedSources | [{"id":"iem_G_39.590_-74.880_1783214760000","source":"iem","severity":"low","severityValue":25,"timestamp":1783214760000,"latitude":39.59,"longitude":-74.88}] |
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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