10/27/2011 Snow, Freezes and Storms - Oh My!

The weather over the next several days will be a wonderful mess and our first taste of WINTER!

Today- A front has stalled just south of New England today, a wave of low pressure will track along this front today bringing in showers with cool temperatures.  As the low passes to the east later today the wind flow around the low will shift to the north and west and will pull down much cooler air from Canada.

Morning temperatures showing colder air north in NH and VT pushing in south.  A Freeze Watch is in effect for coastal New England in WHITE.  Green indicates a coastal flood advisory.

Tonight - Colder, below freezing air works in to much of New England tonight, and will first change and rain showers will mix with snow then change to all snow by late tonight as the low exits the coast.  Snow may be seen flying around Boston late tonight, but it will be the higher elevations above 1000 feet that will see a light accumulation.

Snowfall potential tonight. Areas in white will see accumulations. Areas in BLUE will see snow fall, but not likely stick or become a slushy mess on the grass and car tops. Purple areas will see a few flakes mixed in without any issues.

 Frost/Freeze  Also, the temperature will drop below freezing over the metro Boston area. There has not been a frost or freeze in this area yet this fall, so the growing season is still in effect. Areas closest to the coast may hover around freezing where other areas may be in the 20s.  This means you should tend to all plants and vegetation that needs protection from the cold. This will be what is called an advective freeze, meaning the cold air is being pushed in (similar to a walk in freezer with fans) and frost cannot form. That is why it may freeze even at the coast  However it will be calm on Friday night, which will result in a radiational freeze ( the warm air escapes back into the atmosphere and is replaced by cold air at the surface). Coastal areas are protected by the warm ocean.

Overnight low temperatures, The red line marks the freezing line, which will hug the immediate coastline from Gloucester South, Boston could flirt with the freezing mark for a few hours. The Cape and Islands and South coast will remain above Freezing tonight.

Friday - Cool High pressure moves in for a sunny day but chilly. Frost and freezing likely at night.



Saturday  - Another storm exits the coast and will likely track south of New England, but it will likely throw some moisture and wind to parts of Southern New England on Saturday.

More on this storm in a later post today with a P-town forecast as well!