North Atlantic Coastal Waters, 2021

Marine Thunderstorm Winds in North Atlantic Coastal Waters, February 22, 2021

February 22, 2021 · NWS LWX · 3 events in 2 counties and zones

A cold front generated a line of heavy showers that produced gale force wind gusts over the lower Maryland portion of the Chesapeake Bay during the early afternoon hours.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LWX wrote it up.

A cold front generated a line of heavy showers that produced gale force wind gusts over the lower Maryland portion of the Chesapeake Bay during the early afternoon hours.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Feb 22, 10:33 AM EST, 2 hours 56 minutes earlier.

Area forecast discussion, Feb 22, 10:33 AM EST, 2 hours 56 minutes before
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Hazardous weather outlook, Feb 22, 8:56 AM EST, 4 hours 33 minutes before
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In the hours before

Local storm report, Feb 22, 12:52 PM EST, 37 minutes before
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Local storm report, Feb 22, 12:53 PM EST, 36 minutes before
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Local storm report, Feb 22, 1:04 PM EST, 25 minutes before
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Local storm report, Feb 22, 1:07 PM EST, 22 minutes before
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Local storm report, Feb 22, 1:12 PM EST, 17 minutes before
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Local storm report, Feb 22, 1:19 PM EST, 10 minutes before
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The radar

The Dover AFB radar (KDOX), 116 km away, was scanning. The volume nearest the first event began at 18:26 UTC.

Open the radar archive at this moment

Event by event

3 marine thunderstorm wind. Local standard time, as filed.

Marine Thunderstorm Wind, Tidal Potomac Cobb Is Md to Smith Pt Va

When
February 22, 1:29 PM EST to 1:34 PM EST
Where
Tidal Potomac Cobb Is Md to Smith Pt Va forecast zone, Point Lookout (Ptl)
Measured
34 kt (39 mph) measured gust
Reported by
Buoy
Coordinates
38.040, -76.320

Wind gusts of up to 34 knots (39 MPH) were measured by a buoy near Point Lookout.

Marine Thunderstorm Wind, Tangier Sound and the Inland Waters Surrounding Bloodsworth Island

When
February 22, 1:53 PM EST to 2:08 PM EST
Where
Tangier Sound and the Inland Waters Surrounding Bloodsworth Island forecast zone, Crisfield Cg (Crs)
Measured
39 kt (45 mph) measured gust
Reported by
Buoy
Coordinates
37.970, -75.880

Wind gusts of up to 39 knots (45 MPH) were measured by a buoy near Crisfield.

Marine Thunderstorm Wind, Tangier Sound and the Inland Waters Surrounding Bloodsworth Island

When
February 22, 1:59 PM EST to 2:09 PM EST
Where
Tangier Sound and the Inland Waters Surrounding Bloodsworth Island forecast zone, Raccoon Point (Rac)
Measured
35 kt (40 mph) measured gust
Reported by
Buoy
Coordinates
38.140, -75.790

Wind gusts of up to 35 knots (40 MPH) were measured by a buoy near Raccoon Point.

What these are

Marine Thunderstorm Wind
Thunderstorm winds of 34 knots or more over coastal or lake waters.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in North Atlantic Coastal Waters in 2021Every state in 2021This day in weather history

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 935262, 935263, 935264.