* WHAT...Heavy snow. Additional snow accumulations between 4 and 7 inches. * WHERE...Northern Oneida County. * WHEN...Until 7 AM EST Thursday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes.

* WHAT...Heavy snow. Additional snow accumulations between 4 and 8 inches will be mostly across northern Oneida County. * WHERE...Madison, Northern Oneida, Onondaga, and Southern Oneida Counties. * WHEN...Until 7 AM EST Thursday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour possible, with up to 3 inches per hour possible through early Wednesday morning across northern Oneida County. Expect an additional 4-8 inches of snow for the Mohawk Valley region through 7am. The warning may need to be extended for northern Oneida County depending on the position of the lake effect snow band later this morning.