This alert expired on 3 September 2026 at 04:45 UTC. It is kept here as a record.
It is the 97th strongest of the 281 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 12:02AM EDT until September 3 at 12:45AM EDT by NWS Mount Holly NJ
An estimated 1,363,232 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 16, 2026 · score 52 · 3.2 km
- July 6, 2026 · score 52 · 5.0 km
- June 22, 2026 · score 52 · 7.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 87 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 87% |
| Coordinates | 39.0871, -76.1436 |
| Nearest City | Lake Shore (29 km) |
| Population Exposed | 1.4M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T04:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5107e77b5327d9bdc9fc19f9a2a8cc8d522276a9.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kent, DE; Caroline, MD; Kent, MD; Queen Anne's, MD; Talbot, MD |
| Headline | Severe Thunderstorm Warning issued September 3 at 12:02AM EDT until September 3 at 12:45AM EDT by NWS Mount Holly NJ |
| Expires | 2026-09-03T00:45:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 W Cockeysville |
| Spc County | Baltimore |
| Spc State | MD |
| Spc Comments | Large tree uprooted in Cockeysville... MD. Time estimated via radar. (LWX) |
| MergedSources | [{"id":"spc_wind_39.59_-76.57_42","source":"spc","severity":"medium","severityValue":45,"timestamp":1788410074664,"latitude":39.59,"longitude":-76.57},{"id":"spc_wind_39.38_-76.58_43","source":"spc","severity":"medium","severityValue":45,"timestamp":1788410074664,"latitude":39.38,"longitude":-76.58},{"id":"spc_wind_39.40_-76.69_44","source":"spc","severity":"medium","severityValue":45,"timestamp":1788410074664,"latitude":39.4,"longitude":-76.69},{"id":"spc_wind_38.80_-75.85_58","source":"spc","severity":"medium","severityValue":45,"timestamp":1788410074664,"latitude":38.8,"longitude":-75.85},{"id":"spc_wind_38.84_-75.82_59","source":"spc","severity":"medium","severityValue":45,"timestamp":1788410074664,"latitude":38.84,"longitude":-75.82},{"id":"spc_wind_39.48_-76.64_60","source":"spc","severity":"medium","severityValue":45,"timestamp":1788410074664,"latitude":39.48,"longitude":-76.64}] |
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 8 March 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 Lake Shore?
Calamity.live data shows a weather event with CalamityScore 46/100, near Lake Shore (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.