Low pressure will lift off the Mid Atlantic Coast Saturday and Sunday with snow expected across the Twin Tiers.  The snow will develop during the afternoon Saturday and become steady at times Saturday night into Sunday.  Periods of light snow will linger on Sunday with total accumulation generally between 3-6" with higher amounts to the east of Elmira and lower amounts to the west.  Another system will approach the Twin Tiers next Tuesday with a wintry mix expected to change over to rain.