[Weather] [2018.01.17 AM NWS Brief] 2 Systems To Monitor Through This Weekend

[BOX Operations - NOAA Service Account]

Good morning everyone,

We continue to monitor two winter systems, one for early Friday, the other
for the weekend. * Note that the single snowfall forecast attached to this
email is for the Friday morning system only.  The full set of briefing
slides is for the weekend storm.*

*Friday:*

   - Light snow begins between 1 AM and 7 AM Friday, impacting the commute
   for most of Southern New England.
   - Snowfall rates of less than 1 inch/hour are expected, with
   accumulations up to 2 inches across western MA, decreasing closer to the
   coastlines.  (See attached snowfall map)
   - Snow changes to rain, especially across the coastal plain of MA/RI
   during the afternoon.
   - Some untreated road surfaces may be covered.

*Saturday night - Sunday night:*

See the slides attached to this email.  Heavy snow changing to an icy mix
and then to rain, mainly across the southeast, is expected, along with a
risk for strong winds, inland and coastal flooding.  This storm is likely
to be followed by a flash freeze beginning late day Sunday into Sunday
night, with bitter cold air into Monday.

*Be aware*, *the snowfall totals for the weekend storm are likely to evolve
over the next couple of days. Note the rather large range in accumulation
between the best and worst case scenarios. These are being provided now as
a first look. Sleet accumulation has been added into the "snow" total
accumulation.*

Overall confidence is high for a moderate to high impact storm, but
confidence in exact details and timing remains low at this time. We will
continue to update into this weekend.

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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