[Weather] [2019.12.17 PM] Emergency Manager Brefing

[BOX Operations - NOAA Service Account]

Good afternoon everyone,

Here is the latest briefing for this evening, possible snow squalls
Wednesday afternoon and evening, as well as the arctic blast Wednesday
night into Thursday.

*What Has Changed:*

   - Winter Weather Advisories extended until 9 PM this evening


*Additional A**ccumulating Snow and Light To Moderate Ice Accretion:*
*Locations*: South of Route 2 in northern MA.
*Timin*g: Mixed precipitation.
*Amounts*: Up to 1 inch of additional snow accumulation, with up to one
tenth inch of additional ice accretion.  Icing most likely across northern
CT, northern RI and southern MA into Metrowest.
*Impact*: Snow and ice will result in hazardous travel for the evening
commute. Untreated surfaces will be slippery.
*Confidence*: High confidence in mixed precipitation. Moderate confidence
in timing for individual precipitation types at any given location.

*Locations*: North of Route 2 in northern MA.
*Timin*g: Mainly snow, with periods of sleet and freezing rain at times.
Rain towards the immediate east coast of MA.
*Amounts*: 1 to 2 inches of additional snow/sleet. A trace to less than one
tenth inch of additional ice accretion, mainly near the Mass Pike and
Middlesex County.
*Impact*:  Snow and ice will result in hazardous travel for the evening
commute. Untreated surfaces will be slippery.
*Confidence*: High confidence in mixed precipitation. Moderate confidence
in timing for individual precipitation types at any given location.

*Isolated to Scattered Snow Squalls:*
*Locations*: All locations.
*Timing*: Wednesday afternoon into early evening.
*Amounts*: A quick coating to half an inch in less than 30 minutes.
*Impact*: Temporarily reduced visibility could catch drivers off guard,
especially for early evening commute. Also, roads could become snow-covered
quickly, resulting in slippery travel.
*Confidence*: Low to moderate. Areal extent of snow squalls will be limited
with many locations likely remaining dry. Best chance of snow squalls will
be in the interior.

*Bitter Cold/Very Low Wind Chills:*
*Locations*: All locations.
*Timing*: Wednesday night into Thursday morning.
*Amounts*: Wind chill values -5 to -20°F across the interior, and zero to
-5°F across eastern MA and RI.
*Impact*: Coldest air of the season. Bitter cold wind chills for school bus
stops.
*Confidence*: High. Wind Chill Advisories may be issued with later
forecasts.

*Potential risk of freezing spray:*
*Locations*: Immediate coastal waters off Eastern MA and RI.
*Timing*: Wednesday night into early Thursday morning.
*Amounts*: Light to moderate freezing spray possible.
*Impact*: Glaze of ice possible on boats and ships traversing the waters.
*Confidence*: Moderate overall, highest risk across the nearshore waters.


Matthew Belk

If you have any questions or would like more information, don't hesitate to
contact us via this email address, on NWSChat <https://nwschat.weather.gov/>,
or at the following:

National Weather Service Boston/Norton, MA
46 Commerce Way
Norton, MA 02766
508.622.3280
Website <http://www.weather.gov/boston> | Facebook
<http://www.facebook.com/NWSBoston> | Twitter
<http://www.twitter.com/NWSBoston>
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