During the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley. Frontogenetic forcing allowed for some higher snow rates during the morning and early afternoon hours, particularly in the higher elevations. Snow rates became lighter in the afternoon as support for lift weakened and lifted northward, and as energy began to transfer to a coastal low. Accumulations through midnight were generally limited to four inches or less.
This event continued into early February, when strengthening northwest flow increased cold advection and allowed additional accumulating snow showers to develop.

Winter Weather in ALLEGHENY, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest storm total snowfall from January 31st through February 2nd was 9.5 inches in Bethel Park.

Winter Weather in ARMSTRONG, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Highest storm total snowfall from Jan 31st-Feb 3rd was 6.5 inches near Dayton, PA.

Winter Weather in BEAVER, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Highest storm total snowfall in Beaver County from Jan 31st to Feb 2nd was 7.5 inches at the Montgomery Dam.

Winter Weather in CLARION, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Highest storm total snowfall from Jan 31st to Feb 2nd was 9.0 inches 7 miles northeast of Strattanville.

Winter Weather in FAYETTE, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest storm total snowfall from Jan 31st to Feb 2nd was 6.0 inches near Point Marion, PA.

Winter Weather in FOREST, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest snowfall total from Jan 31st to Feb 3rd was 6.2 inches near Marienville.

Winter Weather in INDIANA, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

An average of 10 to 12 inches of snow fell between Jan 31st and Feb 3rd across Indiana County. A report of 14.3 inches was logged in Davis, PA on Feb 1st but no other reports were that high. Will disregard this report; may have been measured in a drift.

Winter Weather in GREENE, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Highest storm total snowfall for Jan 31st-Feb 3rd was 6.7 inches of snow near Waynesburg, PA.

Winter Weather in JEFFERSON, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest storm total snowfall in Jefferson County from Jan 31st to Feb 2nd was 8.0 inches near Timblin, PA.

Winter Weather in LAWRENCE, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Highest storm total snowfall in Lawrence County from Jan 31st to Feb 2nd was 4.1 inches near McConnells Mill.

Winter Weather in MERCER, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest storm total snowfall in Mercer County from Jan 31st to Feb 2nd was 3.7 inches near Sharon, PA.

Winter Weather in VENANGO, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 02-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest storm total snowfall in Venango County from Jan 31st to Feb 2nd was 5.8 inches near Seneca, PA.

Winter Weather in WASHINGTON, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest storm total snowfall in Washington County from Jan 31st to Feb 3rd was 9.5 inches near Dunlevy, PA. In the city of Washington, 8.5 inches fell near midnight of Feb 2nd.

Winter Weather in WESTMORELAND, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

An average of 6 inches fell in Westmoreland County from Jan 31st to Feb 3rd.

Winter Weather in BUTLER, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest snow total in Butler County was 7.2 inches in Cranberry Township. Storm total covers Jan 31st to Feb 3rd.

Winter Weather in FAYETTE RIDGES, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 07:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Highest snowfall total from Jan 31st-Feb 2nd was 9.8 inches near Ohiopyle, PA. 14.1 inches of snow was reported on Feb 3rd near Farmington, PA.

Winter Weather in WESTMORELAND RIDGES, PENNSYLVANIA
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Average storm total snowfall in the ridges of Westmoreland County from Jan 31st to Feb 3rd was 8 inches.