A low pressure system rapidly intensified December 22nd to December 23rd as the center of the low moved from the Midwest across the Great Lakes. A flash freeze, strong wind gusts, and dangerously cold temperatures were recorded across the region. Record low maximum temperatures were broken at several climate sites. Widespread power outages were noted by utility companies, isolated areas experienced internal damage from frozen pipes,  and hazardous travel was noted due to a flash freeze (rain quickly changed to snow) with rapidly dropping temperatures.

Winter Weather in ALLEGHENY, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Reported by: ASOS

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:00am and 8am in Allegheny County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in ARMSTRONG, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 6:00am and 8:30am in Armstrong County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in BEAVER, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:30am and 8:00am in Beaver County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in BUTLER, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 5:00am and 8:00am in Butler County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in CLARION, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 6:30am and 9am in Clarion County. Precipitation started as rain and quickly switched to snow with the passage of the front. Less than an inch of snow fell by 7am on the December 23rd.

Winter Weather in FAYETTE, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 5:30am and 8am in Fayette County. Precipitation started as rain and quickly switched to snow with the passage of the front. Less than an inch of snow fell by 7am on the December 23rd.

Winter Weather in FAYETTE RIDGES, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 5:30am and 8am in Fayette County. Precipitation started as rain and quickly switched to snow with the passage of the front. Less than an inch of snow fell by 7am on the December 23rd.

Winter Weather in FOREST, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 7:00am and 10am in Forest County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in GREENE, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 5am and 7:30am in Greene County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in INDIANA, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 6am and 9:30am in Indiana County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in JEFFERSON, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 6:30am and 9:30am in Jefferson County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Cold/Wind Chill in ALLEGHENY, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: ASOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in ARMSTRONG, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: RAWS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in BEAVER, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Winter Weather in LAWRENCE, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:30am and 7:30am in Lawrence County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in MERCER, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:30am and 8am in Mercer County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Cold/Wind Chill in BUTLER, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in CLARION, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: Mesonet

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in FAYETTE, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: Mesonet

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in FAYETTE RIDGES, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: Mesonet

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -35F.

Cold/Wind Chill in FOREST, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: RAWS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in GREENE, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: Department of Highways

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in INDIANA, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: Department of Highways

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in JEFFERSON, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in LAWRENCE, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in MERCER, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: Department of Highways

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in VENANGO, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in WASHINGTON, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in WESTMORELAND, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Reported by: AWOS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -30F.

Cold/Wind Chill in WESTMORELAND RIDGES, PENNSYLVANIA
From 23-DEC-22 08:00:00 to 24-DEC-22 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Dangerous wind chills accompanied a low pressure system on December 23th. Lowest wind chill values occurred early afternoon on December 23rd, temperatures were below zero and gusts were 30 to 35mph. Minimum wind chill values across western PA were near -35F.

High Wind in ALLEGHENY, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 51.00 MG
Reported by: Mesonet

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred. A 59mph wind gust was measured near Bellefield, PA in Allegheny County. Allegheny Airport also gusted to 56mph.

Strong Wind in ARMSTRONG, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 43.00 EG
Reported by: Utility Company

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred.

Strong Wind in BEAVER, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 41.00 EG
Reported by: Utility Company

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred.

Strong Wind in BUTLER, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 40.00 MG
Reported by: AWOS

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred.

Strong Wind in CLARION, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 42.00 MG
Reported by: Department of Highways

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred. 48mph was measured near Tippecanoe along I-80.

Strong Wind in FAYETTE, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 42.00 EG
Reported by: Utility Company

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred.

Winter Weather in MERCER, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 13:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:30am and 7:30am in Mercer County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in VENANGO, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 13:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:30am and 7:30am in Venago County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in WASHINGTON, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 13:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 4:30am and 7:30am in Washington County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in WESTMORELAND, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 13:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 5:30am and 9:00am in Westmoreland County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Winter Weather in WESTMORELAND RIDGES, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 23-DEC-22 13:00:00 (EST-5)
Reported by: Mesonet

A flash freeze created hazardous travel early Friday, December 23th, with a strong cold front. Temperatures dropped from the mid-40s to the single digits between 5:30am and 9:00am in Westmoreland County. Precipitation started as rain and quickly switched to snow with the passage of the front. About an inch of snow fell by 7am on the December 23rd.

Strong Wind in FOREST, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 43.00 EG
Reported by: Utility Company

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred.

Strong Wind in GREENE, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 43.00 EG
Reported by: Utility Company

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 50mph, sustain winds exceed 30mph. Isolated power outages occurred.

High Wind in INDIANA, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 53.00 MG
Reported by: AWOS

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 45 to 65mph, sustain winds exceed 40mph. Isolated power outages occurred.

Strong Wind in JEFFERSON, PENNSYLVANIA
From 23-DEC-22 04:00:00 to 24-DEC-22 03:30:00 (EST-5)
Magnitude: 46.00 MG
Reported by: ASOS

High wind gusts accompanied a strong low pressure system on December 23rd and continue into December 24th. Measured wind gusts across western PA ranged between 40 to 55mph, sustain winds exceed 35mph. Isolated power outages occurred.