This alert expired on 6 July 2026 at 17:15 UTC. It is kept here as a record.
No stronger detection stands among the 315 recorded within 20 km of this point since 12 March 2026 — 246 others scored the same. The last comparable one was on 5 July 2026. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 6 at 9:16AM EDT until July 6 at 1:15PM EDT by NWS Mount Holly NJ
An estimated 1,838,173 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 17, 2026 · score 52 · 1.1 km
- August 3, 2026 · score 46 · 2.9 km
- August 3, 2026 · score 46 · 5.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 40.3633, -74.8592 |
| Nearest City | Ewing (12 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T13:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.806114f975ab5e9ece33c52c6532fa375adbc247.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Hunterdon, NJ; Mercer, NJ; Somerset, NJ |
| Headline | Flash Flood Warning issued July 6 at 9:16AM EDT until July 6 at 1:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-06T13:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
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 near Ewing?
Calamity.live data shows a weather event with CalamityScore 52/100, near Ewing (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.