This alert expired on 17 March 2026 at 02:45 UTC. It is kept here as a record.
It is the 16th strongest of the 230 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 16 March 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 16 at 8:42PM EDT until March 16 at 10:45PM EDT by NWS Baltimore MD/Washington DC
An estimated 4,262,634 people live within 50 km of this point.
Nearby, since 11 March 2026
- July 28, 2026 · score 76 · 2.5 km
- August 10, 2026 · score 52 · 2.8 km
- September 4, 2026 · score 46 · 4.7 km
How we know
Confirmed by 17 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 88% |
| Coordinates | 38.8820, -76.5954 |
| Nearest City | Parole (12 km) |
| Population Exposed | 4.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T00:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.6f06305c73cea93ba0b0c8ba01984175 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Patapsco River including Baltimore Harbor; Chester River to Queenstown MD; Eastern Bay; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA |
| Headline | Special Marine Warning issued March 16 at 8:42PM EDT until March 16 at 10:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-16T22:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6f06305c73cea93ba0b0c8ba019841752ea2aeef.001.1","noaa_urn:oid:2.49.0.1.840.0.2f1b26b6cb93d13550a8b5948e84341edcf4df7e.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 SW Reston |
| Spc County | Fairfax |
| Spc State | VA |
| Spc Comments | Road closure due to a downed tree. (LWX) |
| Iem TypeSummary | D |
| Iem City | Hyattsville |
| Iem County | Prince Georges |
| Iem State | MD |
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 Parole?
Calamity.live data shows a weather event with CalamityScore 52/100, near Parole (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.