Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 5 km from here.
This alert expired on 5 September 2026 at 09:15 UTC. It is kept here as a record.
It is the 41st strongest of the 99 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 4 September 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 5 at 1:13AM EDT until September 5 at 5:15AM EDT by NWS Mount Holly NJ
An estimated 232,359 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 5, 2026 · score 37 · 4.9 km
- August 28, 2026 · score 43 · 5.4 km
- March 17, 2026 · score 43 · 9.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 86 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 86% |
| Coordinates | 39.1312, -74.9487 |
| Nearest City | Millville (31 km) |
| Population Exposed | 232.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-05T05:13:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a60e2de8615aad6d0a29d123d6f526535a5f269d.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Cape May, NJ; Cumberland, NJ |
| Headline | Flash Flood Warning issued September 5 at 1:13AM EDT until September 5 at 5:15AM EDT by NWS Mount Holly NJ |
| Expires | 2026-09-05T05:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| Iem TypeSummary | E |
| Iem City | North Wildwood |
| Iem County | Cape May |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | Minor street flooding. |
| MergedSources | [{"id":"iem_E_39.000_-74.790_1788589800000","source":"iem","severity":"low","severityValue":25,"timestamp":1788589800000,"latitude":39,"longitude":-74.79}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.