During lake effect snow, the weather can vary from bands of locally heavy snow to dry weather just a few miles away. Visibilities can also vary greatly. Be prepared for rapid changes in weather, visibility, and road conditions.

* WHAT...Lake effect snow expected. Total snow accumulations between 1 and 4 inches with higher amounts in northwestern McKean County. * WHERE...McKean County. * WHEN...Until 7 AM EST Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute and holiday travel. * ADDITIONAL DETAILS...Gusty west winds will also cause snow to drift and repeatedly cover untreated roads even when snow is not falling.