Special Marine Warning — Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA was recorded by Global Incident Tracker on Saturday, 5 September 2026 at 16:14 UTC. The event is classified as a storm incident with a severity rating of Severe, and was detected through the US National Weather Service (NWS).

Special Marine Warning issued September 5 at 12:14PM EDT until September 5 at 2:15PM EDT by NWS Baltimore MD/Washington DC SMWLWX The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Tidal Potomac from Cobb Island MD to Smith Point VA... Tidal Potomac from Indian Head to Cobb Island MD... * Until 215 PM EDT. * At 1214 PM EDT, strong thunderstorms were located along a line extending from 14 nm west of Brent Point to 13 nm southwest of Aquia Creek to 24 nm southwest of Fairview Beach, moving east at 30 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include... Yeocomico River, Breton Bay, Saint Clements Bay, Piney Point, Westmoreland State Park, Mouth Of The Potomac River, Point

Where this happened

The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.

Approximate coordinates of the reported event are 38.163°, -76.699°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.

Understanding storm events

Severe thunderstorms, windstorms, hail and winter storms. Severe storms combine wind, lightning, hail and sudden downpours. Secondary effects — falling trees, power line damage and flash flooding on roads — cause the majority of injuries.

How severity is rated

Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.

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Data and verification

This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.

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Timeline and sources

Official warning

Issued by U.S. National Weather Service. A warning or forecast describes a hazard; on its own it is not a report that harm occurred.

How statuses are decided · the number of reports is never treated as confirmation.

  1. · received · event time 5 Sep 2026, 16:14 UTC
    First report Official warning

    First recorded from U.S. National Weather Service.

    U.S. National Weather Service ↗

Times are when this site received each report, in UTC; the event time is shown where the source gave one. Copies of one syndicated story count as one report.

Conditions at the time

0.4mm
Rainfall that day
28°C
Maximum temperature
24°C
Minimum temperature
14km/h
Peak wind speed

Light rain of 0.4 mm was recorded, and the temperature peaked at 28°C. Conditions are shown for context only — they do not establish a cause.

Weather reanalysis for this location and date via Open-Meteo.