Lines of thunderstorms developed along a stalling cold front resulting in gusty winds and a waterspout over the Chesapeake Bay and tidal Potomac River.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 15-AUG-23 14:25:00 to 15-AUG-23 14:25:00 (EST-5)
Location: SANDY POINT (SPT)
Magnitude: 34.00 EG
Reported by: Mesonet

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a Tempest station on River Bay Road adjacent to the Chesapeake Bay.

Marine Thunderstorm Wind in CHESTER RIVER TO QUEENSTOWN MD, ATLANTIC NORTH
From 15-AUG-23 14:35:00 to 15-AUG-23 14:55:00 (EST-5)
Location: ROCK HALL ES (RKHAL)
Magnitude: 35.00 MG
Reported by: Mesonet

Wind gusts of up to 35 knots (40 MPH) were measured by a Tempest station at Huntingfield Point adjacent to the tidal Chester River.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 15-AUG-23 14:39:00 to 15-AUG-23 14:49:00 (EST-5)
Location: SANDY POINT (SPT)
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts of up to 38 knots (43 MPH) were measured by a personal weather station at Love Point (KMDSTEVE52) adjacent to the Chesapeake Bay and tidal Chester River.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 15-AUG-23 14:44:00 to 15-AUG-23 14:44:00 (EST-5)
Location: SANDY POINT SOUTH (NRSPS)
Magnitude: 34.00 EG
Reported by: Mesonet

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a mesonet on the westbound span of the US-50/US-301 Chesapeake Bay Bridge (MD065).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 15-AUG-23 14:46:00 to 15-AUG-23 14:46:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 34.00 EG
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near the Thomas Point NOS sensor (TPLM2).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 15-AUG-23 15:29:00 to 15-AUG-23 15:29:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 EG
Reported by: Mesonet

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a personal weather station near Chance (KMDCHANC1) adjacent to Tangier Sound.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 15-AUG-23 15:30:00 to 15-AUG-23 15:30:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 38.00 MG
Reported by: Buoy

A wind gust of 38 knots (44 MPH) was measured by the Bishops Head Pier NOS sensor (BISM2).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 15-AUG-23 16:00:00 to 15-AUG-23 16:15:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts of up to 38 knots (44 MPH) were measured by a Tempest station on Ferry Dock Road adjacent to the tidal Potomac River.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 15-AUG-23 16:01:00 to 15-AUG-23 16:06:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of up to 35 knots (40 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 15-AUG-23 16:05:00 to 15-AUG-23 16:05:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots (40 MPH) was measured by the Potomac Light 33 WeatherFlow sensor (XLT3).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 15-AUG-23 16:06:00 to 15-AUG-23 16:11:00 (EST-5)
Location: PYLONS DAHLGREN (PYL)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of up to 35 knots (40 MPH) were measured by the Pylons Dahlgren WeatherFlow sensor (XPYL).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 15-AUG-23 16:20:00 to 15-AUG-23 16:20:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots (40 MPH) was measured by the Cuckold Creek WeatherFlow sensor (XCCK).

Waterspout in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 15-AUG-23 16:45:00 to 15-AUG-23 16:45:00 (EST-5)
Location: HORN POINT LAB (HPLWS)
Reported by: Broadcast Media

A waterspout was spotted just west of the US-50 Choptank River Bridge over the tidal Choptank River.