Right now
The most recent data we hold from NOAA arrived 7 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 15 June 2026 at 01:00 UTC. It is kept here as a record.
It is the 41st strongest of the 146 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 14 at 7:54PM EDT until June 14 at 9:00PM EDT by NWS Baltimore MD/Washington DC
Nearby, since 12 March 2026
- August 2, 2026 · score 28 · 4.4 km
- March 12, 2026 · score 43 · 8.3 km
- June 15, 2026 · score 22 · 13.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 22 / 100 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 38.2740, -76.4792 |
| Nearest City | St. Charles (54 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-14T23:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.ec386015cf56fa13563c42af06e8ff54 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-14T23:54:00.000Z.
First archived: 2026-06-15T00:09:08.571Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Cobb Island MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Cobb Island MD to Smith Point VA; Tangier Sound and the inland waters surrounding Bloodsworth Island and 2 more areas |
| Headline | Special Marine Warning issued June 14 at 7:54PM EDT until June 14 at 9:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-14T21:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ec386015cf56fa13563c42af06e8ff54213610d1.001.1","noaa_urn:oid:2.49.0.1.840.0.14db1bbc7a60779dbf91db17952bb875883ff608.001.1","noaa_urn:oid:2.49.0.1.840.0.b4a04f9bd9610acba60bee28cd211c4b77b09947.001.1","noaa_urn:oid:2.49.0.1.840.0.a2cbd5600456d6bd70e9000beb20e031aaf66285.001.1","noaa_urn:oid:2.49.0.1.840.0.38d0547d21683f69e329c4bab467155c2594b75f.001.1","noaa_urn:oid:2.49.0.1.840.0.24300cf9384a1ef48ed1631e5fa5a823518ea740.001.1"] |
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.
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