An area of low pressure developed over the southern Plains on February 1st and then moved quickly northeast. This low moved across northern Ohio and into western Pennsylvania during the morning hours of February 2nd. Three waves of wintry precipitation were associated with this storm across western Pennsylvania. The first wave of precipitation moved into Northwest Pennsylvania during the early morning hours of February 1st.  Snow began just after midnight and continued till just before daybreak before tapering off.  The snow was heavy at times and between 5 and 7 inches of snow was reported over most of Erie and Crawford Counties.  Most of the daylight hours of the 1st were quiet with just some flurries reported. The second wave of precipitation began during the early evening hours.  This precipitation started as snow and sleet but quickly changed to freezing rain and drizzle.   The freezing rain then continued through the early morning hours of the 2nd before ending just before daybreak. Up to a quarter inch of ice accumulation was reported. A few power outages resulted from the freezing rain. Wrap around snow behind the low affected northwestern Pennsylvania during the daylight hours of the 2nd. Some of the snow was locally heavy with visibilities at times less than a quarter mile. Much of the area saw between one and three inches of snow. The snow quickly ended from west to east during the evening hours. Strong winds also accompanied the precipitation. Winds were initially from the northeast and gusty. Gusts up to 35 mph were reported near the Lake Erie shoreline. Winds became southerly right ahead of the low and then became southwest to west as the low exited to the east. Wind gusts as much as 40 mph occurred during the morning hours of the 2nd with speeds gradually subsiding during the afternoon. A lot of blowing and drifting snow was reported. Dozens of schools were closed on February 1st and 2nd. Some schools remained closed on February 3rd because of residual thick ice on parking lots, sidewalks and secondary roads. This ice resulted from the combination of two days of mixed freezing rain, sleet and snow and was over an inch thick in some areas. Removing the ice from sidewalks and driveways was nearly impossible.

Winter Storm in NORTHERN ERIE, PENNSYLVANIA
From 01-FEB-11 02:00:00 to 02-FEB-11 08:00:00 (EST-5)
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three waves of wintry precipitation were associated with this storm across northern Ohio. Snow began in Erie County during the early morning hours of February 1st.  A four to six hour period of moderate to heavy snow occurred with accumulations of 5 to 7 inches.  Most of the daylight hours of the 1st were quiet with just some light snow and patchy freezing drizzle reported. The second wave of precipitation began during the late afternoon and evening hours. Most of this was mixed freezing rain and sleet. Ice accumulations of over a quarter inch along with an inch or more of sleet accumulation occurred. This mixture coated area roads and streets and resulted in treacherous travel. A few power outages were reported on 2nd.  Wrap around snow behind the low affected northwestern Pennsylvania during the daylight hours of the 2nd.  Much of the area saw between one and three inches of snow.  Some schools were closed on the 1st and 2nd.

Winter Storm in SOUTHERN ERIE, PENNSYLVANIA
From 01-FEB-11 02:00:00 to 02-FEB-11 08:00:00 (EST-5)
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three waves of wintry precipitation were associated with this storm across northern Ohio. Snow began in Erie County during the early morning hours of February 1st. A four to six hour period of moderate to heavy snow occurred with accumulations of 5 to 7 inches.  Most of the daylight hours of the 1st were quiet with just some light snow and patchy freezing drizzle reported. The second wave of precipitation began during the late afternoon and evening hours. Most of this was mixed freezing rain and sleet. Ice accumulations of over a quarter inch along with an inch or more of sleet accumulation occurred. This mixture coated area roads and streets and resulted in treacherous travel. A few power outages were reported on 2nd.  Wrap around snow behind the low affected northwestern Pennsylvania during the daylight hours of the 2nd.  Much of the area saw between one and three inches of snow.  Some schools were closed on the 1st and 2nd.

Winter Storm in CRAWFORD, PENNSYLVANIA
From 01-FEB-11 02:00:00 to 02-FEB-11 08:00:00 (EST-5)
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three waves of wintry precipitation were associated with this storm across northern Ohio. Snow began in Crawford County during the early morning hours of February 1st. A four to six hour period of moderate to heavy snow occurred with accumulations of 5 to 7 inches.  Most of the daylight hours of the 1st were quiet with just some light snow and patchy freezing drizzle reported. The second wave of precipitation began during the late afternoon and evening hours. Most of this was mixed freezing rain and sleet. Ice accumulations of over a quarter inch along with an inch or more of sleet accumulation occurred. This mixture coated area roads and streets and resulted in treacherous travel. A few power outages were reported on 2nd.  Wrap around snow behind the low affected northwestern Pennsylvania during the daylight hours of the 2nd.  Much of the area saw between one and three inches of snow.  Some schools were closed on the 1st and 2nd.