This alert expired on 2 September 2026 at 04:00 UTC. It is kept here as a record.
It is the 185th strongest of the 234 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 1 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 1 at 9:27PM EDT until September 2 at 12:00AM EDT by NWS Mount Holly NJ
An estimated 364,634 people live within 50 km of this point.
Nearby, since 11 March 2026
- September 1, 2026 · score 37 · 0.0 km
- August 27, 2026 · score 43 · 0.0 km
- August 10, 2026 · score 43 · 0.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 91 % 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 | 91% |
| Coordinates | 39.0000, -76.0500 |
| Nearest City | Easton (26 km) |
| Population Exposed | 364.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T01:27:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.d405908f2874fcae9727aba30950d04f6a9ee8da.004.1 |
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 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; 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; Ocean, NJ; Salem, NJ; Berks, PA; Chester, PA; Delaware, PA; Montgomery, PA; Philadelphia, PA; Chesapeake Bay north of Pooles Island MD; Chester River to Queenstown MD; Eastern Bay and 1 more areas |
| Headline | Severe Thunderstorm Watch issued September 1 at 9:27PM 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 | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d405908f2874fcae9727aba30950d04f6a9ee8da.004.1","noaa_urn:oid:2.49.0.1.840.0.d405908f2874fcae9727aba30950d04f6a9ee8da.003.1","noaa_urn:oid:2.49.0.1.840.0.cec744893f27f58e845226b6810a725c80627814.002.1","noaa_urn:oid:2.49.0.1.840.0.cec744893f27f58e845226b6810a725c80627814.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Houston |
| Spc County | Kent |
| Spc State | DE |
| Spc Comments | Wires down in Houston. Time estimated from radar. (PHI) |
| Iem TypeSummary | M |
| Iem Magnitude | 39 |
| Iem Unit | mph |
| Iem City | 7 SE Aberdeen Proving G |
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 Easton?
Calamity.live data shows a weather event with CalamityScore 37/100, near Easton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.