This alert expired on 17 March 2026 at 03:31 UTC. It is kept here as a record.
It is the 35th strongest of the 62 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 11:23PM EDT until March 16 at 11:30PM EDT by NWS Wakefield VA
An estimated 419,792 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 5, 2026 · score 43 · 3.1 km
- July 10, 2026 · score 43 · 9.9 km
- July 9, 2026 · score 43 · 9.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 83 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 83% |
| Coordinates | 39.4469, -74.9383 |
| Nearest City | South Vineland (8 km) |
| Population Exposed | 419.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T03:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0405167c612580a03fb49a25159e2eba |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Worcester, MD; Atlantic, NJ; Burlington, NJ; Camden, NJ; Gloucester, NJ; Mercer, NJ; Monmouth, NJ; Ocean, NJ; Hunterdon, NJ; Mercer, NJ; Middlesex, NJ; Monmouth, NJ; Somerset, NJ; Bucks, PA; Philadelphia, PA and 4 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 11:23PM EDT until March 16 at 11:30PM EDT by NWS Wakefield VA |
| Expires | 2026-03-16T23:31:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0405167c612580a03fb49a25159e2eba31736708.001.1","noaa_urn:oid:2.49.0.1.840.0.6341bc5191445128938f1f6c6f3d2c1de8107dc8.001.1","noaa_urn:oid:2.49.0.1.840.0.eca2c2cbaa1b9afb4d5d6d1da59444a7e1373d36.001.1","noaa_urn:oid:2.49.0.1.840.0.b73ec81c112077400430945c2ef49812d3856e50.001.1","noaa_urn:oid:2.49.0.1.840.0.6336fa8a5041e1a7eb0f530a1da197525b565c57.002.1","noaa_urn:oid:2.49.0.1.840.0.87d93fe1c08e4472613717bad9765824ad64ef3d.002.1","noaa_urn:oid:2.49.0.1.840.0.d2aa79e919477b834abe23b5fbed40bde65f53d4.001.1"] |
| 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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near South Vineland (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.