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Marine Thunderstorm Wind · Atlantic North

Marine Thunderstorm Wind May 20, 2026 · Tidal Potomac Indian Hd To Cobb Is Md, Atlantic North

48 mph

Measured gust (42 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A wind gust of 42 knots (48 MPH) was measured by a personal weather station (KVALORTO40) adjacent to the tidal Potomac River.

The wider storm

A strong cold front ignited a band of thunderstorms. The gust front rushed out ahead of the precipitation cores, but given the steep low-level lapse rates the gusts were able to maintain gale- to even storm-force as they crossed portions of the waters late in the afternoon.

Began near Occoquan River (occ) (38.6300, -77.2000).

Source: NOAA Storm Events Database, event 1325859. Narratives are written by the National Weather Service forecast office that issued the report.

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