A strong cold front crossed central Pennsylvania during the afternoon of December 1st, 2006. Short lines of convection developed ahead of the main front, initiating much of the severe weather. A number of severe thunderstorms were spawned, as very strong winds aloft were mixed down to the surface. The pre-frontal convection also spawned one tornado.

Tornado in DAUPHIN, PENNSYLVANIA
From 01-DEC-06 16:14:00 to 01-DEC-06 16:16:00 (EST-5)
Location: HALIFAX
Tornado F-scale: F1
Property damage: 2.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

A thunderstorm spawned an F1 tornado south of the town of Halifax in Dauphin county, as determined by a National Weather Service storm survey team. The tornado was embedded within a much larger area of downburst wind damage.
The tornado touched down near Route 147 about 1.3 miles south of Halifax. The tornado traveled northeast about 1.5 miles, before dissipating in a wooded area. Major damage was sustained by 4 businesses and 1 home. Moderate damage was sustained by 4 additional residences. Minor damage occurred to several dozen homes. Top winds were estimated between 100 and 110 mph, categorizing the storm as an F1.
Damages from the tornado were estimated at nearly 2 million dollars. There was one fatality caused by a tree falling onto a car.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 01-DEC-06 16:57:00 to 01-DEC-06 16:57:00 (EST-5)
Location: SCHUYKILL HAVEN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees and wires.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 01-DEC-06 16:13:00 to 01-DEC-06 16:20:00 (EST-5)
Location: HALIFAX
Magnitude: 70.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds produced a 8 mile long swath of damage from 2.5 miles southwest of Halifax, to 6.5 miles east of Halifax. Damage began near the intersection of Shammons School Road, about 1 mile east of the Susquehanna River, and ended in a wooded area of Jackson Township, about 1.5 miles east of Enders. The thunderstorm winds produced minor damage to several dozen homes, and downed thousands of trees.
Embedded in the damaging thunderstorm winds was a short lived F1 tornado.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 01-DEC-06 16:32:00 to 01-DEC-06 16:36:00 (EST-5)
Location: NUMIDIA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds produced a swath of damage about 2 miles wide, either side of Route 487 extending from near Knobels Park to Berwick. Trees and power poles were knocked down along this path. A roof was also torn off a barn in Almedia.

Thunderstorm Wind in MCKEAN, PENNSYLVANIA
From 01-DEC-06 12:40:00 to 01-DEC-06 12:40:00 (EST-5)
Location: SMETHPORT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees across Route 59 in Keating Township.

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 01-DEC-06 13:15:00 to 01-DEC-06 13:15:00 (EST-5)
Location: GEISTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees in portions of Richland and Summerhill Townships.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 01-DEC-06 13:20:00 to 01-DEC-06 13:20:00 (EST-5)
Location: WESTOVER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees in Westover.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 01-DEC-06 14:44:00 to 01-DEC-06 14:44:00 (EST-5)
Location: SUNBURY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds knocked down trees along Route 147 south of Sunbury.

Flash Flood in NORTHUMBERLAND, PENNSYLVANIA
From 01-DEC-06 16:20:00 to 01-DEC-06 17:45:00 (EST-5)
Location: NORTHUMBERLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused flash flooding and the closure of numerous roads throughout Northumberland County.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 01-DEC-06 14:45:00 to 01-DEC-06 14:45:00 (EST-5)
Location: SELINSGROVE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds knocked down trees and wires throughout Selinsgrove.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 01-DEC-06 15:44:00 to 01-DEC-06 15:44:00 (EST-5)
Location: BLAIN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees and power poles in Blain.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 01-DEC-06 16:10:00 to 01-DEC-06 16:10:00 (EST-5)
Location: NORTHUMBERLAND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees and wires in Northumberland.

Thunderstorm Wind in SOMERSET, PENNSYLVANIA
From 01-DEC-06 11:46:00 to 01-DEC-06 11:46:00 (EST-5)
Location: ROCKWOOD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees in Rockwood and throughout Conemaugh Township.

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 01-DEC-06 12:20:00 to 01-DEC-06 12:20:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees in portions of Middle Taylor Township.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 01-DEC-06 16:18:00 to 01-DEC-06 16:18:00 (EST-5)
Location: SUNBURY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down numerous trees in Upper Agusta Township.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 01-DEC-06 16:30:00 to 01-DEC-06 16:30:00 (EST-5)
Location: REBUCK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees in Washington Township along Route 3010.

Thunderstorm Wind in MONTOUR, PENNSYLVANIA
From 01-DEC-06 16:30:00 to 01-DEC-06 16:30:00 (EST-5)
Location: DANVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down numerous trees.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 01-DEC-06 16:53:00 to 01-DEC-06 16:53:00 (EST-5)
Location: MINERSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees and wires.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 01-DEC-06 17:00:00 to 01-DEC-06 17:00:00 (EST-5)
Location: HOMETOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees and wires.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 01-DEC-06 12:10:00 to 01-DEC-06 12:10:00 (EST-5)
Location: BURNSIDE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees over portions of Burnside Township.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 01-DEC-06 12:56:00 to 01-DEC-06 12:56:00 (EST-5)
Location: DU BOIS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees and power lines in portions of Brady Township.

Thunderstorm Wind in ELK, PENNSYLVANIA
From 01-DEC-06 12:55:00 to 01-DEC-06 12:55:00 (EST-5)
Location: ST MARYS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down trees across portions of Route 255 between St. Marys and Johnsonburg.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 01-DEC-06 16:40:00 to 01-DEC-06 17:10:00 (EST-5)
Location: LEBANON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A line of thunderstorms with damaging winds moved across Lebanon County, knocking down trees throughout the county as it passed through.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 01-DEC-06 17:05:00 to 01-DEC-06 17:05:00 (EST-5)
Location: DALLASTOWN
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds damaged a trailer, and knocked down numerous trees.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 01-DEC-06 17:10:00 to 01-DEC-06 17:10:00 (EST-5)
Location: MAYTOWN
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds knocked down 2 chicken houses.