This alert expired on 7 June 2026 at 02:00 UTC. It is kept here as a record.
It is the 13th strongest of the 227 detections recorded within 20 km of this point since 16 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 Watch issued June 6 at 6:15PM EDT until June 6 at 10:00PM EDT by NWS Mount Holly NJ
An estimated 1,648,526 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 2, 2026 · score 46 · 2.0 km
- May 27, 2026 · score 52 · 3.4 km
- August 28, 2026 · score 58 · 4.5 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 79 % 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) | 52 / 100 |
| Our confidence | 79% |
| Coordinates | 39.0000, -76.2857 |
| Nearest City | Annapolis (18 km) |
| Population Exposed | 1.6M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T22:15:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM; Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 NM; Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM; Kent, DE; New Castle, DE; Atlantic, NJ; Burlington, NJ; Camden, NJ; Cape May, NJ; Cumberland, NJ; Gloucester, NJ; Hunterdon, NJ; Mercer, NJ; Middlesex, NJ; Monmouth, NJ; Morris, NJ; Ocean, NJ; Salem, NJ; Somerset, NJ; Sussex, NJ; Warren, NJ; Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA; Kent, MD; Queen Anne's, MD and 4 more areas |
| Headline | Severe Thunderstorm Watch issued June 6 at 6:15PM EDT until June 6 at 10:00PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-06T22:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | false |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5ee11f439699aef685fcb00d07eaed5ea722b947.003.1","noaa_urn:oid:2.49.0.1.840.0.5ee11f439699aef685fcb00d07eaed5ea722b947.002.1","noaa_urn:oid:2.49.0.1.840.0.5ee11f439699aef685fcb00d07eaed5ea722b947.001.1","noaa_urn:oid:2.49.0.1.840.0.1887a37ad6cbd9dd816039bd82a9c8a446a95b1a.004.1","noaa_urn:oid:2.49.0.1.840.0.1887a37ad6cbd9dd816039bd82a9c8a446a95b1a.005.1","noaa_urn:oid:2.49.0.1.840.0.1887a37ad6cbd9dd816039bd82a9c8a446a95b1a.002.1","noaa_urn:oid:2.49.0.1.840.0.1887a37ad6cbd9dd816039bd82a9c8a446a95b1a.003.1"] |
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 52/100, near Annapolis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.