NWS forecasters issued a winter weather advisory for those three counties from 4 a.m. through 9 p.m. Wednesday.
Says the National Weather Service in Cleveland: "Lake-enhanced snow is likely as the winds come onshore.There could be locally higher amounts both in the primary snow belt and the secondary snow belt if some good banding develops". Temperatures are expected to warm above freezing along the coast Tuesday evening.
The low will continue to push east Thursday, but then lake-effect snow will kick back in. Roads will become snow-covered.PRECAUTIONARY/PREPAREDNESS ACTIONS.A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. "Total snow accumulations of 4-6" are expected around Buffalo and 4-8" in Niagara and Orleans counties. There's also another clipper moving to the south that MAY spread a bit of light snow across parts of CNY later Wednesday night, especially around and south of Rt. But the break will be short-lived, as another, more potent system pulls into the Great Lakes region overnight Monday into Tuesday.
A general snowfall this morning will transition to lake effect snow Tuesday.
Tired shovelers in Buffalo and Watertown should get a break with this round, however, as winds out of the northwest set up over the region, and steer the heaviest snow further south than the weekend's event.
We will have to deal with an Arctic air mass (temperatures in the teens and low 20s), gusty winds, some accumulating lake snow and blowing and drifting tonight through Wednesday.