Right now
The most recent data we hold from NOAA arrived 2 minutes 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 6 July 2026 at 19:15 UTC. It is kept here as a record.
It is the 7th strongest of the 72 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 6 at 2:07PM EDT until July 6 at 3:15PM EDT by NWS Baltimore MD/Washington DC
Nearby, since 17 March 2026
- June 13, 2026 · score 22 · 12.4 km
- August 2, 2026 · score 22 · 12.5 km
- June 17, 2026 · score 22 · 17.8 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
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 | 0.65/1 |
| Coordinates | 38.0418, -76.2741 |
| Nearest City | Salisbury (69 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-06T18:07:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2d4107621d639e662bf2e14b97e2a5ba9e23aede.001.1 |
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: 2026-07-06T18:07:00.000Z.
First archived: 2026-07-06T18:32:34.747Z. 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 |
| Headline | Special Marine Warning issued July 6 at 2:07PM EDT until July 6 at 3:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-06T15:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 1 WNW Lexington Park |
| Iem County | St. Marys |
| Iem State | MD |
| Iem Wfo | LWX |
| Iem Remark | FDR Boulevard closed at MD-246 Great Mills Road. Six inches of water flowing across the roadway. |
| MergedSources | [{"id":"iem_F_38.260_-76.460_1783359120000","source":"iem","severity":"low","severityValue":25,"timestamp":1783359120000,"latitude":38.26,"longitude":-76.46}] |
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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