An area of low pressure tracked slowly east across the Ohio Valley on February 20th and 21st.  A warm front stretching east from this low caused snow to develop over northwestern Pennsylvania during the late afternoon hours of the 20th.  The snow continued through the early morning hours of the 21st and then tapered off around daybreak.  Some light freezing drizzle was then reported for a couple of hours.  Some of the snow during the evening was heavy with snowfall rates approaching two inches per hour and visibilities less than a quarter mile.  Snowfall totals across Erie County ranged from 8 to 12 inches with 6 to 8 inches in Crawford County.  A peak total of 13.0 inches was reported near Colt Station in Erie County with a peak of 7.8 inches in Crawford County near Canadohta Lake.  Officially, 11.5 inches of snow was measured at Erie International Airport on the 20th and 21st.  Strong northeast winds accompanied the snow initially.  Winds speeds died off quickly during the evening hours but some blowing and drifting continued through the night.  Difficult travel conditions were reported.  A few school districts not already closed for the President's Day Holiday delayed or canceled classes on the 21st.  Travel during this event was difficult.

Winter Storm in NORTHERN ERIE, PENNSYLVANIA
From 20-FEB-11 17:00:00 to 21-FEB-11 09:00:00 (EST-5)
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

An area of low pressure tracked slowly east across the Ohio Valley on February 20th and 21st. A warm front stretching east from this low caused snow to develop over northwestern Pennsylvania during the late afternoon hours of the 20th. The snow continued through the early morning hours of the 21st and then tapered off around daybreak. Some light freezing drizzle was then reported for a couple of hours. Some of the snow during the evening was heavy with snowfall rates approaching two inches per hour and visibilities less than a quarter mile. Snowfall totals across Erie County ranged from 8 to 12 inches.  Officially, 11.5 inches of snow was measured at Erie International Airport on the 20th and 21st. Strong northeast winds accompanied the snow initially. Winds speeds died off quickly during the evening hours but some blowing and drifting continued through the night. Difficult travel conditions were reported. A few school districts not already closed for the President's Day Holiday delayed or canceled classes on the 21st. Travel during this event was difficult.

Winter Storm in SOUTHERN ERIE, PENNSYLVANIA
From 20-FEB-11 17:00:00 to 21-FEB-11 09:00:00 (EST-5)
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An area of low pressure tracked slowly east across the Ohio Valley on February 20th and 21st. A warm front stretching east from this low caused snow to develop over northwestern Pennsylvania during the late afternoon hours of the 20th. The snow continued through the early morning hours of the 21st and then tapered off around daybreak. Some light freezing drizzle was then reported for a couple of hours. Some of the snow during the evening was heavy with snowfall rates approaching two inches per hour and visibilities less than a quarter mile. Snowfall totals across Erie County ranged from 8 to 12 inches. A peak total of 13.0 inches was reported near Colt Station. Strong northeast winds accompanied the snow initially. Winds speeds died off quickly during the evening hours but some blowing and drifting continued through the night. Difficult travel conditions were reported. A few school districts not already closed for the President's Day Holiday delayed or canceled classes on the 21st. Travel during this event was difficult.

Winter Storm in CRAWFORD, PENNSYLVANIA
From 20-FEB-11 17:00:00 to 21-FEB-11 08:00:00 (EST-5)
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An area of low pressure tracked slowly east across the Ohio Valley on February 20th and 21st. A warm front stretching east from this low caused snow to develop over northwestern Pennsylvania during the late afternoon hours of the 20th. The snow continued through the early morning hours of the 21st and then tapered off around daybreak. Some light freezing drizzle was then reported for a couple of hours. Some of the snow during the evening was heavy with snowfall rates approaching two inches per hour and visibilities less than a quarter mile. Snowfall totals across Crawford County ranged from 6 to 8 inches. A peak total of 7.8 inches was measured near Canadohta Lake. Strong northeast winds accompanied the snow initially. Winds speeds died off quickly during the evening hours but some blowing and drifting continued through the night. Difficult travel conditions were reported. A few school districts not already closed for the President's Day Holiday delayed or canceled classes on the 21st. Travel during this event was difficult.