Snow Accumulating in Yorktown's Weekend Forecast

SOMERS, NY — We all know that weather can change fast. This week's a good example.

On Monday, meteorologists predicted a 30 percent chance of snow for the weekend. Just Wednesday, they were all in agreement that the much discussed potential-first-accumulating snow of the season wouldn't happen. Now they're forecasting 2-4 inches in the lower Hudson Valley.

The short version: while waves of Arctic air continue in from Canada as expected, the Atlantic storm making its way up the East Coast got more organized and shifted its track westward.

The National Weather Service put a Winter Weather Advisory out for Putnam, Rockland and Westchester counties:

6 AM SATURDAY TO 1 AM EST SUNDAY

WHAT...Snow expected. Plan on hazardous travel conditions. Total snow accumulations of 2 to 4 inches are expected.

WHERE...Portions of northeast New Jersey and southeast New York.

WHEN...From 6 AM Saturday to 1 AM EST Sunday. Highest snow accumulation should occur Saturday morning into Saturday evening.

ADDITIONAL DETAILS...Be prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

For a more detailed look, check out Hudson Valley Weather's Facebook page: Facebook Livestream – Saturday Snow Discussion.

Patch will keep you updated.

Meanwhile, here's the detailed weekend forecast for northern Westchester from the NWS:

• Today-Mostly cloudy. Highs in the lower 40s. West winds around 5 mph.
• Tonight-Mostly cloudy. A slight chance of snow after midnight. Lows in the mid 20s. West winds around 5 mph. Chance of snow 20 percent.
• Saturday-Snow. Snow accumulation of 2 to 4 inches. Highs in the lower 30s. East winds around 5 mph, becoming north around 5 mph in the afternoon. Chance of snow 80 percent.
• Saturday-Night Mostly cloudy. Snow likely, mainly in the evening. Additional light snow accumulation possible. Lows in the upper 20s. Northwest winds 5 to 10 mph. Chance of snow 60 percent.
• Sunday-Mostly sunny. Highs in the upper 30s. West winds 10 to 15 mph with gusts up to 25 mph.
• Sunday Night-Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 20s.

MAP: AccuWeather.com