An upper level disturbance and cold front moved out of the Ohio Valley into a very warm and relatively moist atmosphere in the Mid-Atlantic. Thunderstorms developed along this front as well as a lee trough during the afternoon. Instability, steep lapse rates, and moderate shear aided in some thunderstorms becoming severe, producing damaging winds during the evening.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 22-SEP-10 19:18:00 to 22-SEP-10 19:18:00 (EST-5)
Location: MITCHELLVILLE
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: State Official

Multiple trees down near the intersection of Governors Bridge Road and U.S. 301.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 22-SEP-10 19:18:00 to 22-SEP-10 19:18:00 (EST-5)
Location: MITCHELLVILLE
Magnitude: 61.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were down near retail locations along the 4100 block of Crain Highway.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 19:08:00 to 22-SEP-10 19:08:00 (EST-5)
Location: CROFTON
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A tree was down at Maryland Route 424 and Maryland Route 450 2 miles southeast of Crofton.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 19:31:00 to 22-SEP-10 19:31:00 (EST-5)
Location: RUTLAND
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Several trees had their tops sheared off. Many large branches were also snapped 2 miles west-northwest of Riva.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 19:29:00 to 22-SEP-10 19:29:00 (EST-5)
Location: DAVIDSONVILLE
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A tree was down at the intersection of Mount Airy Road and Royal Glen Avenue 1 mile west-northwest of Davidsonville.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 22-SEP-10 19:40:00 to 22-SEP-10 19:40:00 (EST-5)
Location: HYDES
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Multiple large trees were downed. Trees were snapped off at the tops and many large limbs were down 1 mile west-northwest of Hydes.

Thunderstorm Wind in HARFORD, MARYLAND
From 22-SEP-10 16:22:00 to 22-SEP-10 16:22:00 (EST-5)
Location: WHITEFORD
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees down near Whiteford.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 22-SEP-10 18:34:00 to 22-SEP-10 18:34:00 (EST-5)
Location: KEMP MILL
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gusts of 58 mph was measured 1 mile north-northwest of Four Corners.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 18:53:00 to 22-SEP-10 18:53:00 (EST-5)
Location: (FME)TIPTON AAF FT M
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A tree was down at Piney Orchard and Patuxent Road.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 18:56:00 to 22-SEP-10 18:56:00 (EST-5)
Location: ODENTON
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches were broken by strong thunderstorm wind 1 mile west-southwest of Odenton.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 22-SEP-10 19:16:00 to 22-SEP-10 19:16:00 (EST-5)
Location: MITCHELLVILLE
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Several trees were down on Northview Drive 1 mile south of Bowie.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 22-SEP-10 19:18:00 to 22-SEP-10 19:18:00 (EST-5)
Location: MITCHELLVILLE
Magnitude: 61.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees were down near U.S. 301 and U.S. 50 interchange 1 mile east-southeast of Bowie.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 22-SEP-10 19:02:00 to 22-SEP-10 19:02:00 (EST-5)
Location: HILLMEADE
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Several trees were down on Point Way 2 miles south of Glen Dale.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 18:57:00 to 22-SEP-10 18:57:00 (EST-5)
Location: MILLERSVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A tree was down at Maryland Route 3 and St. Stephens Church Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 22-SEP-10 19:13:00 to 22-SEP-10 19:13:00 (EST-5)
Location: BLACK HORSE
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Trees were down along Old York Road 4 miles east-northeast of Monkton.

Thunderstorm Wind in HARFORD, MARYLAND
From 22-SEP-10 19:14:00 to 22-SEP-10 19:14:00 (EST-5)
Location: MADONNA
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: State Official

Multiple trees were down at Madonna Road and Cox Road 3 miles northwest of Jarrettsville.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 22-SEP-10 19:41:00 to 22-SEP-10 19:41:00 (EST-5)
Location: LONG GREEN
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Multiple trees were down in Long Green.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 22-SEP-10 19:45:00 to 22-SEP-10 19:45:00 (EST-5)
Location: BALDWIN
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Post Office

A few trees were down on Baldwin Mill Road south of Sweet Air Road and on Long Green Pike north of Hydes Road.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 22-SEP-10 19:51:00 to 22-SEP-10 19:51:00 (EST-5)
Location: CUMBERSTONE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Two large trees downed and fell onto powerlines at the corner of Muddy Creek Road and Cumberstone Road 1 mile northwest of Galesville.