A strong cold front produced a line of showers resulting in brief-gale force winds and a couple of waterspouts.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:10:00 to 16-OCT-21 14:40:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts of up to 37 knots (43 MPH) were measured by the Pylons Dahlgren WeatherFlow sensor (XPYL).

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 16-OCT-21 14:16:00 to 16-OCT-21 14:16:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 34.00 MG
Reported by: Buoy

A wind gust of 34 knots (39 MPH) was measured by the Grove Point WeatherFlow sensor (XGVP).

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 16-OCT-21 14:20:00 to 16-OCT-21 14:20:00 (EST-5)
Location: NORTH BAY NORTH EAST MD (NRTBY)
Magnitude: 35.00 MG
Reported by: Mesonet

A wind gust of 35 knots (40 MPH) was measured by a mesonet at the North East Landfill (DE052) adjacent to the upper Chesapeake Bay.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 14:32:00 to 16-OCT-21 15:12:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 46.00 MG
Reported by: Buoy

Wind gusts of up to 46 knots (53 MPH) were measured by the Cobb Point WeatherFlow sensor (XCOB).

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 16-OCT-21 13:12:00 to 16-OCT-21 13:12:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 34.00 MG
Reported by: ASOS

A wind gust of 34 knots (39 MPH) was measured by the ASOS at Ronald Reagan Washington National Airport (KDCA) adjacent to the upper tidal Potomac River.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 13:26:00 to 16-OCT-21 13:26:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 41.00 MG
Reported by: ASOS

A wind gust of 41 knots (47 MPH) was measured by the ASOS at Quantico Marine Base (KNYG) adjacent to the tidal Potomac River.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 13:51:00 to 16-OCT-21 13:51:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 34.00 MG
Reported by: ASOS

A wind gust of 34 knots (39 MPH) was measured by the ASOS at the United States Naval Academy in Annapolis (KNAK) adjacent to the Chesapeake Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 13:54:00 to 16-OCT-21 13:54:00 (EST-5)
Location: ANNAPOLIS MD (APAM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the NOS sensor near Annapolis (APAM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 13:56:00 to 16-OCT-21 14:06:00 (EST-5)
Location: GREENBURY POINT (GBY)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near the Greenbury Point WeatherFlow sensor (XGBY).

Waterspout in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 13:58:00 to 16-OCT-21 13:58:00 (EST-5)
Location: SANDY POINT SOUTH (NRSPS)
Reported by: Public

Several pictures and videos from social media showed two spray rings from waterspouts just south of the US-50/US-301 Chesapeake Bay Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 16-OCT-21 14:00:00 to 16-OCT-21 14:12:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near the Tolchester Beach NOS sensor (TCBM2).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:02:00 to 16-OCT-21 14:02:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 34.00 EG
Reported by: ASOS

A squall produced an estimated wind gust to 34 knots (39 MPH) near the ASOS at Quantico Marine Base (KNYG) adjacent to the tidal Potomac River.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 14:03:00 to 16-OCT-21 14:08:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near the Tolly Point WeatherFlow sensor (XTOL).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:07:00 to 16-OCT-21 14:07:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Baber Point WeatherFlow sensor (XBAB).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 14:11:00 to 16-OCT-21 14:11:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 34.00 EG
Reported by: ASOS

A squall produced an estimated wind gust to 34 knots (39 MPH) near the ASOS at the United States Naval Academy in Annapolis (KNAK) adjacent to the Chesapeake Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 14:11:00 to 16-OCT-21 14:11:00 (EST-5)
Location: KENT ISLAND (KNT)
Magnitude: 36.00 MG
Reported by: Buoy

A wind gust of 36 knots (41 MPH) was measured by the Kent Island WeatherFlow sensor (XKNT).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:13:00 to 16-OCT-21 14:58:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts of up to 41 knots (47 MPH) were measured by the Potomac Light WeatherFlow sensor (XLT3).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:13:00 to 16-OCT-21 14:43:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of up to 35 knots (40 MPH) were measured by the Cuckold Creek WeatherFlow sensor (XCCK).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 14:15:00 to 16-OCT-21 14:15:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 36.00 MG
Reported by: Buoy

A wind gust of 36 knots (41 MPH) was measured by the Thomas Point NOS sensor (TPLM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 14:19:00 to 16-OCT-21 14:19:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 34.00 EG
Reported by: Mesonet

A squall produced an estimated wind gust to 34 knots (39 MPH) near a mesonet on the eastbound span of the US-50/US-301 Chesapeake Bay Bridge (MD066).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:22:00 to 16-OCT-21 14:37:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts of up to 34 knots (39 MPH) were measured by the Baber Point WeatherFlow sensor (XBAB).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 14:23:00 to 16-OCT-21 14:53:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts of up to 34 knots (39 MPH) were measured by the Monroe Creek WeatherFlow sensor (XMON).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:00:00 to 16-OCT-21 16:06:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 45.00 MG
Reported by: Buoy

Wind gusts of up to 45 knots (52 MPH) were measured by the Piney Point NOS sensor (PPTM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 16-OCT-21 15:06:00 to 16-OCT-21 15:36:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 38.00 MG
Reported by: Buoy

Wind gusts of up to 38 knots (44 MPH) were measured by the Cove Point NOS sensor (COVM2).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:11:00 to 16-OCT-21 15:11:00 (EST-5)
Location: ST INIGOES (KNUI)
Magnitude: 34.00 EG
Reported by: ASOS

A squall produced an estimated wind gust to 34 knots (39 MPH) near the ASOS at Saint Inigoes (KNUI) adjacent to the lower tidal Potomac River.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:12:00 to 16-OCT-21 15:12:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNHK)
Magnitude: 36.00 MG
Reported by: ASOS

A wind gust of 36 knots (41 MPH) was measured by the ASOS at Patuxent River Naval Air Station (KNHK) adjacent to the Chesapeake Bay and tidal Patuxent River.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 14:35:00 to 16-OCT-21 14:45:00 (EST-5)
Location: KENT POINT MD (KPTM2)
Magnitude: 36.00 MG
Reported by: Mesonet

Wind gusts of up to 36 knots (41 MPH) were measured by a mesonet on the MD-33 Knapps Narrows Drawbridge (MD073) between the Chesapeake Bay and the tidal Choptank River.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 16-OCT-21 15:00:00 to 16-OCT-21 15:00:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Gooses Reef CBIBS sensor (44062).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:18:00 to 16-OCT-21 15:30:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near one of the Lewisetta NOS sensors (LWTV2).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:18:00 to 16-OCT-21 15:30:00 (EST-5)
Location: LEWISETTA (LWS)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near one of the Lewisetta NOS sensors (LWS).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 16-OCT-21 15:24:00 to 16-OCT-21 16:12:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 39.00 MG
Reported by: Buoy

Wind gusts of up to 39 knots (45 MPH) were measured by the Gooses Reef CBIBS sensor (44062).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:18:00 to 16-OCT-21 16:18:00 (EST-5)
Location: POTOMAC POINT LOOKOUT BUOY (44042)
Magnitude: 41.00 EG
Reported by: Buoy

Wind gusts of up to 41 knots (47 MPH) were measured by the Lower Potomac/Point Lookout CBIBS sensor (44042).

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 16-OCT-21 15:24:00 to 16-OCT-21 15:24:00 (EST-5)
Location: CAMBRIDGE (CAMM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Cambridge Pier NOS sensor (CAMM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 15:30:00 to 16-OCT-21 16:15:00 (EST-5)
Location: KENT POINT MD (KPTM2)
Magnitude: 37.00 EG
Reported by: Mesonet

Wind gusts of up to 37 knots (43 MPH) were measured by a mesonet on the MD-33 Knapps Narrows Drawbridge (MD073) between the Chesapeake Bay and the tidal Choptank River.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:34:00 to 16-OCT-21 16:09:00 (EST-5)
Location: POINT LOOKOUT (PTL)
Magnitude: 38.00 MG
Reported by: Buoy

Wind gusts of up to 38 knots (44 MPH) were measured by the Point Lookout Weatherflow sensor (XPTL).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 15:34:00 to 16-OCT-21 15:34:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 34.00 MG
Reported by: Mesonet

A wind gust of 34 knots (39 MPH) was measured by a mesonet on the eastbound span of the US-50/US-301 Chesapeake Bay Bridge (MD066).

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 16-OCT-21 15:35:00 to 16-OCT-21 15:35:00 (EST-5)
Location: CAMBRIDGE (CAMM2)
Magnitude: 34.00 EG
Reported by: AWOS

A squall produced an estimated wind gust to 34 knots (39 MPH) near the AWOS at Cambridge-Dorchester Regional Airport (KCGE) adjacent to the tidal Choptank River.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 16-OCT-21 15:36:00 to 16-OCT-21 15:36:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near one of the Solomons Island NOS sensors (SLIM2).

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 16-OCT-21 15:44:00 to 16-OCT-21 15:44:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Blackwalnut Harbor WeatherFlow sensor (XBWH).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 16-OCT-21 15:54:00 to 16-OCT-21 16:00:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts of up to 41 knots (47 MPH) were measured by the Bishops Head Pier NOS sensor (BISM2).

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 16-OCT-21 13:36:00 to 16-OCT-21 13:36:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 36.00 MG
Reported by: Buoy

A wind gust of 36 knots (41 MPH) was measured by one of the I-695 Francis Scott Key Bridge NOS sensors (FSNM2).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 15:54:00 to 16-OCT-21 15:54:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near one of the Lewisetta NOS sensors (LWTV2).

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 16-OCT-21 16:09:00 to 16-OCT-21 16:09:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Blackwalnut Harbor WeatherFlow sensor (XBWH).

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 16-OCT-21 16:12:00 to 16-OCT-21 16:12:00 (EST-5)
Location: CAMBRIDGE (CAMM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Cambridge Pier NOS sensor (CAMM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 16-OCT-21 16:19:00 to 16-OCT-21 16:19:00 (EST-5)
Location: LOWER HOOPER ISLAND (HPR)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Lower Hooper Island WeatherFlow sensor (XHPR).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 16-OCT-21 16:21:00 to 16-OCT-21 16:36:00 (EST-5)
Location: CRISFIELD CG (CRS)
Magnitude: 41.00 EG
Reported by: Buoy

Wind gusts of up to 41 knots (47 MPH) were measured by the Crisfield WeatherFlow sensor (XCRS).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 16-OCT-21 16:23:00 to 16-OCT-21 16:48:00 (EST-5)
Location: RACCOON POINT (RAC)
Magnitude: 36.00 EG
Reported by: Buoy

Wind gusts of up to 36 knots (41 MPH) were measured by the Raccoon Point WeatherFlow sensor (XRAC).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 16-OCT-21 13:54:00 to 16-OCT-21 14:06:00 (EST-5)
Location: ANNAPOLIS BUOY (44063)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near the Annapolis CBIBS sensor (44063).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 16-OCT-21 13:54:00 to 16-OCT-21 13:54:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Occoquan River WeatherFlow sensor (XOCC).