An unusually strong arctic air mass brought sub-freezing temperatures and extreme wind chills to much of central Pennsylvania. This was one of the coldest air masses to affect the region in years. Overnight low temperatures fell to almost thirty below zero in some locations, while highs struggled to climb out of the single digits above and below zero. The cold outbreak closed or delayed many schools over the two to three day period.

Extreme Cold/Wind Chill in POTTER, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in TIOGA, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in CAMERON, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in NORTHERN CLINTON, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in NORTHERN LYCOMING, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in BEDFORD, PENNSYLVANIA
From 16-JAN-09 00:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced wind chills of fifteen to twenty five degrees below zero.

Extreme Cold/Wind Chill in HUNTINGDON, PENNSYLVANIA
From 16-JAN-09 00:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced wind chills of fifteen to twenty five degrees below zero.

Extreme Cold/Wind Chill in BLAIR, PENNSYLVANIA
From 16-JAN-09 00:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced wind chills of fifteen to twenty five degrees below zero.

Extreme Cold/Wind Chill in SOUTHERN CENTRE, PENNSYLVANIA
From 16-JAN-09 00:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced wind chills of fifteen to twenty five degrees below zero.

Extreme Cold/Wind Chill in SOUTHERN CLINTON, PENNSYLVANIA
From 16-JAN-09 00:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced wind chills of fifteen to twenty five degrees below zero.

Extreme Cold/Wind Chill in WARREN, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in MCKEAN, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in ELK, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in NORTHERN CENTRE, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in CLEARFIELD, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in CAMBRIA, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in SOMERSET, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in SULLIVAN, PENNSYLVANIA
From 15-JAN-09 18:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced dangerous wind chills of twenty to thirty degrees below zero.

Extreme Cold/Wind Chill in SOUTHERN LYCOMING, PENNSYLVANIA
From 16-JAN-09 00:00:00 to 17-JAN-09 12:00:00 (EST-5)
Reported by: COOP Observer

Sub-freezing temperatures and brisk winds produced wind chills of fifteen to twenty five degrees below zero.