Low pressure tracked from the Plains to the upper Midwest on February 20th, before transitioning to a coastal system by the morning of the 21st. This low pushed a warm front northward across our region. Widespread precipitation was generated by deep moisture and an area of strong lift that accompanied the warm front. Precipitation started mainly as snow, but transitioned to a mostly brief period of mixed precipitation as warmer air moved in aloft. By late evening on the 20th, the passage of the warm front allowed all precipitation to change to rain.

Winter Storm in WESTMORELAND RIDGES, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 23:58:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A co-op observer at Donegal reported 8 inches of snow, while 6.8 inches were reported at Laurel Mountain.

Winter Weather in WESTMORELAND, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer reported 6 inches of snow at Brackenridge, and another measured 4.2 inches at Greensburg, where a trace of icing was also reported.

Winter Weather in ALLEGHENY, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Most reports across the county indicated 3 to 4.5 inches of snow during the event, with a trace of ice accretion.  The high report of 6 inches of snow was recorded at Plum and received via social media.

Winter Weather in ARMSTRONG, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 23:58:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 2.5 inches of snow at Templeton and Elderton, with a trace of ice also recorded at Templeton.

Winter Weather in BEAVER, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several reports indicated 3 to 4 inches of snow fell, with the high report of 4.5 inches recorded by a trained spotter at Beaver.

Winter Weather in BUTLER, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A variety of reports from trained spotters and social media recorded 3 to 4 inches of snow across the county as an average.  The high report of 4.8 inches was recorded via CoCoRaHS at Saxonburg. A few reports of a trace of ice accretion were also received.

Winter Weather in CLARION, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 23:58:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two to four inches of snow was reported via a combination of trained spotter and social media reports.  The high total of 4 inches was received via social media from New Athens.

Winter Weather in GREENE, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Two inches of snow was reported via social media at Waynesburg.

Winter Weather in INDIANA, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public recorded 4 inches of snow at Indiana and Homer City, while 3 inches was reported by a trained spotter at Penn Run.

Winter Weather in MERCER, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 3.1 inches of snow at Neshannock, while a trained spotter reported 1.4 inches at Sharon.

Winter Weather in VENANGO, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 23:58:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Two inches of snow was recorded via CoCoRaHS at Seneca, with an inch or less reported at other locations in the county.

Winter Weather in WASHINGTON, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A report of 4.7 inches of snow was received from Burgettstown via social media, while 3.6 inches as reported by a trained spotter at McMurray.  At Charleloi, 3 inches of snow was reported with sleet mixing in at times.

Winter Weather in FAYETTE, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A report of 3.5 inches of snow was received via social media from Fayette, with a trace of ice accretion recorded by a trained spotter at Hopwood.

Winter Weather in FAYETTE RIDGES, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 23:58:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A high report of 5.5 inches of snow was received via social media near Victoria, with 3.3 inches of snow, with a mix with sleet at times, near Ohiopyle.

Winter Weather in JEFFERSON, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 23:58:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Reports of 4 to 5 inches of snow were received from a variety of sources, with the high report of 5 inches at Shady Glen sent in by a trained spotter. Icing was more significant here than in other counties, with an eighth of an inch relayed via social media at Brookville, and 0.07 inch reported by the public at Falls Creek.  The ASOS at DuBois Airport measure 0.24 on its icing sensor during the event.

Winter Weather in LAWRENCE, PENNSYLVANIA
From 20-FEB-19 01:00:00 to 20-FEB-19 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A report of 3.5 inches of snow was received from Ellwood City via social media, while 2.2 inches was recorded at New Castle.