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 17 March 2026 at 04:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 112 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 12 March 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 11:31PM EDT until March 17 at 12:00AM EDT by NWS Mount Holly NJ
An estimated 3,292,288 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 12, 2026 · score 52 · 5.1 km
- July 18, 2026 · score 52 · 5.3 km
- July 6, 2026 · score 52 · 7.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 83 % 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 | 83% |
| Coordinates | 39.8148, -74.6601 |
| Nearest City | Vincentown (15 km) |
| Population Exposed | 3.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T03:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.257c3799654b6632a5f8ab9b303c5514 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Atlantic, NJ; Burlington, NJ; Camden, NJ; Gloucester, NJ; Mercer, NJ; Monmouth, NJ; Ocean, NJ; Atlantic, NJ; Cape May, NJ; Cumberland, NJ; Hunterdon, NJ; Mercer, NJ; Middlesex, NJ; Monmouth, NJ; Somerset, NJ; Bucks, PA; Philadelphia, PA |
| Headline | Severe Thunderstorm Warning issued March 16 at 11:31PM EDT until March 17 at 12:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-03-17T00:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.257c3799654b6632a5f8ab9b303c5514397dc603.001.1","noaa_urn:oid:2.49.0.1.840.0.315518aa50f29d48f5358babe05d8e37c7304ac3.002.1","noaa_urn:oid:2.49.0.1.840.0.eca2c2cbaa1b9afb4d5d6d1da59444a7e1373d36.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Holiday Hills |
| Spc County | New Castle |
| Spc State | DE |
| Spc Comments | Tree down into a house. Time estimated from radar. (PHI) |
| MergedSources | [{"id":"spc_wind_39.82_-75.51_266","source":"spc","severity":"medium","severityValue":45,"timestamp":1773715200000,"latitude":39.82,"longitude":-75.51}] |
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.
Want to know when something happens near Vincentown?
Calamity.live data shows a weather event with CalamityScore 52/100, near Vincentown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.