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Summary: A surface low pressure system developing over the Texas panhandle will move northeast to the Ohio Valley Saturday and then re-develop off the DelMarva Peninsula Saturday night. It will then closely hug the coast and intensify as it moves over Cape Cod Sunday morning and into the Gulf of Maine Sunday afternoon. This scenario has been consistent in the computer models for the past few days.

Light snow should develop near noon on Saturday and should remain light and intermittent through the daylight hours. 1-2″ of snow should accumulate by dinner time. Snowfall intensity will pick up in the evening and continue, moderate at times through the night. Snowfall rates should be 1/2″ per hour at times with a few bursts of heavier snow possible. I think the precipitation will stay all snow in most locations. However, there is a fairly good chance that the snow will briefly change to sleet towards daybreak in South County as the precipitation is winding down. There is even a slight chance it will briefly change over in central Berkshire. Any light sleet/snow will change back to all snow and diminish quickly early Sunday morning and be over by noontime.

Total accumulations will likely be in the 6-10″ range with some totals 12″ or slightly higher in the elevated terrain in the eastern part of the county. If a changeover to sleet occurs, accumulation totals would be an inch or so less.

Friday Night

Skies will partially clear for a time this evening with overcast skies re-developing after midnight.

It will be very cold, with low temperatures generally in the low to mid single digits above zero, upper single digits in South County.

Northwesterly winds at 5-10 mph this evening, becoming light northerly after midnight.

Saturday

Overcast and very cold, with light snow developing across the county from southwest to northeast near noon. Intermittent light snow during the afternoon. Total snow accumulation 1-2″ by dinner time. Probability of precipitation 90%.

High temperatures in the mid teens in Pittsfield, Adams, NorthAdams and Williamstown; mid to upper teens in Lee, Stockbridge, Great Barrington and Sheffield and; low teens over the elevated terrain.

Northeasterly winds at 5-10 mph in the morning, shifting to easterly and increasing to 10-15 mph late.

Saturday Night

Becoming windy, with snow increasing in intensity during the evening and continuing moderate to heavy at times overnight. The snow may change briefly to sleet in South County and possibly central Berkshire as it winds down towards daybreak. Additional accumulations of 4-8″. Probability of precipitation near 100%.

Temperatures holding steady in the evening, then rising slowly after midnight. By daybreak temperatures should reach the mid to upper teens in the elevated terrain, near 20 in most other locations, low 20s in South County.

East-northeasterly winds increasing to 15-25 mph with 30-40 mph gusts.

Sunday

Light sleet and snow, changing to all snow as it tapers off during the morning and ends by noon. Probability of precipitation 70%. Additional accumulations 1″ or less. Total storm accumulations 6-10″ with 12″ or slightly higher amounts over the elevated terrain in eastern parts of the county.

Not as cold as previous days, with high temperatures in the mid to upper 20s in Pittsfield, Adams, NorthAdams and Williamstown; upper 20s in Lee, Stockbridge, Great Barrington and Sheffield and: low to mid 20s over the elevated terrain.

Northeasterly winds at 5-10 mph shifting to northwesterly in the afternoon.