The northern edge of yesterdays snow event moved further north than was originally expected with Boston and suburbs to the north and west seeing a general 1 to 2 inch snowfall. Mostly an inch or less north of the city was reported. As expected the heavier amounts fell south and southwest of Boston where 3 to 5 inches were reported across southeast Massachusetts, including Cape Cod and the Islands. A few spot 6 inch totals were reported namely in Marion and Marstons Mills.
Locally, that event was just a warm up to what follows later tonight and Wednesday. A more significant storm will impact the area with plowable snow here and perhaps an array of precipitation types across coastal locations south of the city.
Low pressure this morning is moving out of the western Gulf of Mexico and is forecast to move into the Tennessee Valley during the day. A coastal low will spin up off the coast to our south and this will become the main focus for our weather through Wednesday. The low should be centered off the Delaware coast Wednesday morning and move northeastward to be positioned southeast of Nova Scotia by evening. With high pressure to our north and colder air in place there is little doubt this will be a snow event and a significant one for many of us. There is a chance that a mix along the coast south of Boston may inch as far north as Boston for a time.
The National Weather Service has issued a Winter Storm Warning for our area that will be in effect from midnight until 6 pm Wednesday evening as winter weather returns in a big way throughout the region. The weather service is predicting a widespread 8 to 12 inches with a few isolated 14 inch totals possible. Generally, most of the media weather outlets are forecasting a widespread 6 to 12 inches of snow in our area. Also, this will not be the light fluffy snow we have experienced in the other storms this year. Expect a heavier wetter snow and that will make for more difficultly plowing, shoveling and snowblowing the white stuff.
With regard to coastal flooding potential it appears unlikely at this time according to the National Weather Service. Although some splashover may occur at the time of high tide on Wednesday it does not appear flooding will be an issue in this storm. However, it is always a good idea to stay abreast of updates if you live on the immediate coast in those locales that are prone to flooding.
The onset of snow occurs after midnight. By the morning commute an inch or two will have accumulated as the snow becomes heavier during the commute. The snow will continue all day, heavy at times into the afternoon before it tapers off late day and ends Wednesday night. The snow could fall at an inch or more per hour for a few hours during the morning and early afternoon. As a result expect treacherous travel conditions and a very slow ride to work. Many school districts may cancel classes for the day.
Once the storm moves on out we can expect fair conditions and below normal temperatures Thursday and Friday. Both days the highs will struggle to reach 30 degrees with the overnight lows in the teens.
72 Hour Outlook:
Tuesday: Mostly sunny with afternoon clouds increasing. Pleasant, high temperatures in the low to mid 30s. Light northwest to west winds.
Tuesday night: Becoming cloudy. Snow developing after midnight. Cold, lows in the low to mid 20s. Light east winds.
Wednesday: Snow, heavy at times, breezy and cold. Highs in the low 30s along the coast to upper 20s inland. Northeast winds increasing to 12 to 25 mph along the coast.
Wednesday night: Snow tapers off early and ends. Lows in the low 20s. Winds backing to north then northwest at 10 to 20 mph.
Thursday and Thursday night: Fair weather. Cold, highs in the upper 20s. Overnight lows in the teens.