Numerous showers and thunderstorms developed along a lee pressure trough after several days of late season heat. Several of these storms turned severe, producing both damaging wind gusts and large hail.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 07-SEP-23 16:34:00 to 07-SEP-23 16:34:00 (EST-5)
Location: WHEATON
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: Emergency Manager

Trees and power lines blew down in the 2600 block of Newton Street.

Hail in CARROLL, MARYLAND
From 07-SEP-23 16:47:00 to 07-SEP-23 16:47:00 (EST-5)
Location: MAYBERRY
Magnitude: 1.00 
Reported by: Trained Spotter

Dime to quarter size hail was observed by a spotter in the 2400 block of Cross Section Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 07-SEP-23 18:00:00 to 07-SEP-23 18:00:00 (EST-5)
Location: NORRISVILLE
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Public

Trees and branches blew down and nickel to quarter size hail was observed at Fawn View Farm on Onion Road in Pylesville.

Hail in HARFORD, MARYLAND
From 07-SEP-23 18:00:00 to 07-SEP-23 18:00:00 (EST-5)
Location: NORRISVILLE
Magnitude: 1.00 
Reported by: Public

Trees and branches blew down and nickel to quarter size hail was observed at Fawn View Farm on Onion Road in Pylesville.

Hail in ST. MARY'S, MARYLAND
From 07-SEP-23 18:22:00 to 07-SEP-23 18:22:00 (EST-5)
Location: DRUMCLIFF
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter size hail was observed by trained spotters in the 43500 block of Drum Cliff Road near the tidal Patuxent River.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 08-SEP-23 03:23:00 to 08-SEP-23 03:23:00 (EST-5)
Location: ROBINSON
Magnitude: 60.00 EG
Property damage: 5.00K
Reported by: Fire Department/Rescue

Multiple trees blew down in the Severna Park area.

Hail in ALLEGANY, MARYLAND
From 07-SEP-23 10:54:00 to 07-SEP-23 10:54:00 (EST-5)
Location: KEIFER
Magnitude: 1.00 
Reported by: Social Media

Hail of up to quarter size was reported near Paw Paw.

Thunderstorm Wind in WASHINGTON, MARYLAND
From 07-SEP-23 12:45:00 to 07-SEP-23 12:45:00 (EST-5)
Location: DOWNSVILLE
Magnitude: 65.00 MG
Property damage: 100.00K
Reported by: Trained Spotter

Wind-driven quarter size hail and measured wind gusts of over 65 knots (75 MPH) were reported by a spotter on Falling Waters Road in Williamsport. The wind and hail tore off siding and shingles, and caused damage to vehicles and air conditioners on the property. Numerous trees and several poles blew down in the area, as well.

Thunderstorm Wind in HOWARD, MARYLAND
From 07-SEP-23 13:35:00 to 07-SEP-23 13:35:00 (EST-5)
Location: LONG CORNER
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: Department of Highways

Trees and wires blew down on MD-27 Ridge Road at Penn Shop Road.

Hail in WASHINGTON, MARYLAND
From 07-SEP-23 12:45:00 to 07-SEP-23 12:45:00 (EST-5)
Location: DOWNSVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Wind-driven quarter size hail and measured wind gusts of over 65 knots (75 MPH) were reported by a spotter on Falling Waters Road in Williamsport. The wind and hail tore off siding and shingles, and caused damage to vehicles and air conditioners on the property. Numerous trees and several poles blew down in the area, as well.

Thunderstorm Wind in WASHINGTON, MARYLAND
From 07-SEP-23 12:45:00 to 07-SEP-23 12:45:00 (EST-5)
Location: HUYETT
Magnitude: 61.00 EG
Property damage: 25.00K
Reported by: 911 Call Center

There were over a dozen calls for trees and wires blown down over central Washington County.

Thunderstorm Wind in WASHINGTON, MARYLAND
From 07-SEP-23 12:45:00 to 07-SEP-23 12:45:00 (EST-5)
Location: LINCOLN AVENUE
Magnitude: 56.00 EG
Property damage: 6.00K
Reported by: Department of Highways

Trees blew down on eastbound I-70 Dwight D. Eisenhower Highway near US-11 Virginia Avenue. Trees blew down on northbound I-81 near I-70 Dwight D. Eisenhower Highway.

Thunderstorm Wind in FREDERICK, MARYLAND
From 07-SEP-23 13:28:00 to 07-SEP-23 13:28:00 (EST-5)
Location: ROSEMONT
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: 911 Call Center

Trees blew down in southwestern Frederick County near Rosemont, Brunswick, and Knoxville.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 07-SEP-23 13:34:00 to 07-SEP-23 13:34:00 (EST-5)
Location: DAWSONVILLE
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: Broadcast Media

Trees and wires blew down near the intersection of MD-28 Darnestown Road and MD-117 Bucklodge Road.

Hail in FREDERICK, MARYLAND
From 07-SEP-23 13:40:00 to 07-SEP-23 13:40:00 (EST-5)
Location: ADAMSTOWN
Magnitude: 1.50 
Reported by: Social Media

Hail of up to ping pong ball size was reported in Adamstown.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 07-SEP-23 13:40:00 to 07-SEP-23 13:40:00 (EST-5)
Location: CLARKSBURG
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Broadcast Media

Trees blew down on southbound I-270 Dwight D. Eisenhower Highway before Exit 18/MD-121 Stringtown Road.

Hail in FREDERICK, MARYLAND
From 07-SEP-23 13:42:00 to 07-SEP-23 13:42:00 (EST-5)
Location: ADAMSTOWN
Magnitude: 1.00 
Reported by: NWS Employee

Quarter size hail was reported southwest of Buckeystown.

Thunderstorm Wind in FREDERICK, MARYLAND
From 07-SEP-23 13:45:00 to 07-SEP-23 13:45:00 (EST-5)
Location: BRADDOCK HGTS
Magnitude: 52.00 EG
Property damage: 12.00K
Reported by: 911 Call Center

Trees blew down in central Frederick County, including near Frederick, Braddock Heights, Ballenger Creek, and Middletown.

Thunderstorm Wind in FREDERICK, MARYLAND
From 07-SEP-23 13:59:00 to 07-SEP-23 13:59:00 (EST-5)
Location: CERESVILLE
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: Trained Spotter

Multiple trees blew down on Wheyfield Drive.

Thunderstorm Wind in FREDERICK, MARYLAND
From 07-SEP-23 14:00:00 to 07-SEP-23 14:00:00 (EST-5)
Location: TROUTVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Reported by: 911 Call Center

Trees blew down in northeastern Frederick County, including near Woodsboro, Lewistown, and Keymar.

Thunderstorm Wind in CARROLL, MARYLAND
From 07-SEP-23 14:12:00 to 07-SEP-23 14:12:00 (EST-5)
Location: WINFIELD
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: 911 Call Center

Trees blew down along Woodbine Road and White Rock Road.

Thunderstorm Wind in CARROLL, MARYLAND
From 07-SEP-23 14:25:00 to 07-SEP-23 14:25:00 (EST-5)
Location: MANCHESTER
Magnitude: 52.00 EG
Property damage: 20.00K
Reported by: County Official

Carroll County Public Schools had delayed dismissal due to roads closed from fallen trees and wires.

Thunderstorm Wind in CARROLL, MARYLAND
From 07-SEP-23 14:33:00 to 07-SEP-23 14:33:00 (EST-5)
Location: GUNPOWDER
Magnitude: 50.00 EG
Reported by: COOP Observer

A wind gust of 50 knots (58 MPH) and quarter size hail was measured by a COOP Observer in Millers.

Hail in CARROLL, MARYLAND
From 07-SEP-23 14:33:00 to 07-SEP-23 14:33:00 (EST-5)
Location: GUNPOWDER
Magnitude: 1.00 
Reported by: COOP Observer

A wind gust of 50 knots (58 MPH) and quarter size hail was measured by a COOP Observer in Millers.

Hail in BALTIMORE CITY (C), MARYLAND
From 07-SEP-23 15:15:00 to 07-SEP-23 15:15:00 (EST-5)
Location: ROLAND PARK
Magnitude: 1.50 
Reported by: Broadcast Media

Hail of up to ping pong ball size was reported in the Mount Washington area of Baltimore City.

Hail in BALTIMORE, MARYLAND
From 07-SEP-23 15:30:00 to 07-SEP-23 15:30:00 (EST-5)
Location: STONELEIGH
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter size hail was reported in Towson.

Thunderstorm Wind in HARFORD, MARYLAND
From 07-SEP-23 15:30:00 to 07-SEP-23 15:30:00 (EST-5)
Location: NORRISVILLE
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: 911 Call Center

Trees blew down around White Hall and Norrisville, including in the 4500 block of Amos Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 07-SEP-23 16:15:00 to 07-SEP-23 16:15:00 (EST-5)
Location: COOPSTOWN
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

Trees blew down between Bynum and Bel Air, including near the intersection of High Point Road and MD-23 East-West Highway.

Hail in MONTGOMERY, MARYLAND
From 07-SEP-23 16:30:00 to 07-SEP-23 16:30:00 (EST-5)
Location: KENSINGTON ESTATES
Magnitude: 1.00 
Reported by: Broadcast Media

Quarter size hail was reported in Kensington.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 07-SEP-23 16:30:00 to 07-SEP-23 16:30:00 (EST-5)
Location: KENSINGTON ESTATES
Magnitude: 60.00 EG
Property damage: 3.00K
Reported by: Emergency Manager

Trees and power lines blew down in the 3800 block of Denfield Avenue.