This alert expired on 16 March 2026 at 18:45 UTC. It is kept here as a record.
It is the 4th strongest of the 120 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 17 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 2:11PM EDT until March 16 at 2:45PM EDT by NWS Baltimore MD/Washington DC
An estimated 5,250,075 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 28, 2026 · score 52 · 3.2 km
- July 28, 2026 · score 52 · 6.1 km
- July 5, 2026 · score 52 · 13.3 km
How we know
Confirmed by 22 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 87 % 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 | 87% |
| Coordinates | 39.1867, -76.8500 |
| Nearest City | Scaggsville (6 km) |
| Population Exposed | 5.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T18:11:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.102ed26ede812eb440d73b09e436c7f1b78fd060.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anne Arundel, MD; Howard, MD; Montgomery, MD; Prince Georges, MD |
| Headline | Severe Thunderstorm Warning issued March 16 at 2:11PM EDT until March 16 at 2:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-16T14:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Lisbon |
| Spc County | Howard |
| Spc State | MD |
| Spc Comments | Multiple small trees reported down in the median of I-70 near the Woodbine Road exit (exit 73). (LWX) |
| Iem TypeSummary | D |
| Iem City | 2 ENE Clarksburg |
| Iem County | Montgomery |
| Iem State | MD |
| Iem Wfo | LWX |
| Iem Remark | Wires down on the 11400 block of Hawkes Rd. |
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 Scaggsville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.