This alert is in force until 2 September 2026, 04:00 UTC.
It is the 138th strongest of the 189 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 21 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 1 at 4:35PM EDT until September 2 at 12:00AM EDT by NWS Mount Holly NJ
An estimated 169,356 people live within 50 km of this point.
Nearby, since 11 March 2026
- May 27, 2026 · score 43 · 5.9 km
- July 28, 2026 · score 67 · 6.5 km
- June 11, 2026 · score 37 · 9.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 80 % 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) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 39.2600, -75.7400 |
| Nearest City | Middletown (21 km) |
| Population Exposed | 169.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-01T20:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c5087f9f01ee9d5cc13bca1747b7b1b098944e08.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Kent, DE; New Castle, DE; Sussex, DE; Caroline, MD; Kent, MD; Queen Anne's, MD; Talbot, MD; 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; 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; Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM; Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM; Cecil, MD; Harford, MD and 2 more areas |
| Headline | Severe Thunderstorm Watch issued September 1 at 4:35PM EDT until September 2 at 12:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-09-02T00:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | false |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c5087f9f01ee9d5cc13bca1747b7b1b098944e08.001.1","noaa_urn:oid:2.49.0.1.840.0.c5087f9f01ee9d5cc13bca1747b7b1b098944e08.002.1","noaa_urn:oid:2.49.0.1.840.0.cec744893f27f58e845226b6810a725c80627814.001.1","noaa_urn:oid:2.49.0.1.840.0.cec744893f27f58e845226b6810a725c80627814.002.1","noaa_urn:oid:2.49.0.1.840.0.bc49fb0860f8176486b523ce07679e79b3dcdd90.001.1"] |
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.
Want to know when something happens near Middletown?
Calamity.live data shows a weather event with CalamityScore 37/100, near Middletown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.