This alert expired on 12 March 2026 at 01:15 UTC. It is kept here as a record.
It is the 44th strongest of the 216 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 11 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 11 at 9:05PM EDT until March 11 at 9:15PM EDT by NWS Mount Holly NJ
An estimated 521,043 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 48 · 0.0 km
- June 10, 2026 · score 41 · 1.6 km
- June 27, 2026 · score 43 · 3.9 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 88 % 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) | 48 / 100 |
| Our confidence | 88% |
| Coordinates | 39.4543, -75.4129 |
| Nearest City | Bridgeton (16 km) |
| Population Exposed | 521.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T01:05:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_c32c99204e4baa9d86af29b73566be8367dd556b_001_1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Delaware Bay waters north of East Point NJ to Slaughter Beach DE |
| Headline | Special Marine Warning issued March 11 at 9:05PM EDT until March 11 at 9:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-03-11T21:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 SE North East |
| Spc County | Cecil |
| Spc State | MD |
| Spc Comments | Two trees down on Irishtown Road and two trees down on Frenchtown Road. (LWX) |
| Iem TypeSummary | D |
| Iem City | 2 SE North East |
| Iem County | Cecil |
| Iem State | MD |
| Iem Wfo | LWX |
| Iem Remark | Two trees down on Irishtown Road and two trees down on Frenchtown Road. |
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 48/100, near Bridgeton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.