[Weather] [2019.01.19 PM NWS Boston Weather Briefing] Potent Winter Storm

[BOX Operations - NOAA Service Account]

Greetings everyone,

Attached, you'll find the latest briefing on the winter storm.

There is still a level of uncertainty in the forecast. Even the slightest
wiggle can make considerable changes for particular communities. Stay tuned
to latest forecast.

Should you need your point forecast, please check out the following
webpage. Here you can find the hour-by-hour forecast for a particular point
by clicking on a map.

https://forecast.weather.gov/gridpoint.php?site=box&TypeDefault=graphical

Should you have any questions, comments and/or concerns, please don't
hesitate to reach out to us.

*Changes ...*

   - Latest forecast has trended warmer.
      - Lesser snowfall amounts towards the N&W.
      - Main strip of icing shifted N&W, but heaviest still remaining
      around 0.2 - 0.4"
      - Hartford County CT upgraded to a WINTER STORM WARNING


   - Flood watch issued for Southeast New England.
      - Expectation of 1 to 2 inches with locally higher amounts.
      - A lot of residual water which will easily freeze as Arctic air
      pours in behind the storm.


   - Coastal Flood headlines rescinded to just ADVISORY for the entire
   coastline.
      - Forecast minor coastal flooding along all coastlines, especially
      from Cape Ann northward.

*What / Where / When / Impacts ...*

   - Heavy wet snow / sleet over N&W MA & CT with freezing rain / icing
   across interior areas of New England (roughly Hartford towards Northeast
   MA).
      - Greatest concern is the weight of the two on trees.
      - Add in the winds, there's an exacerbated threat for downed limbs
      and power outages.
      - Concern increases Sunday night with Arctic air building in,
      temperatures dropping down into the single digits with wind
chills 15 to 25
      degrees below zero.


   - Strong winds.
      - Strong southerlies over Southeast New England Sunday, becoming
      blustery out of the NW going into Sunday night into Monday
morning over all
      of Southern New England.
      - Again, concern with downed limbs weighted by ice and snow going
      through Monday morning over N&W portions of Southern New England.


   - Flash Freeze.
      - Especially over Southeast New England which will see warmer
      temperatures and a soaking rain.
      - Residual water along roadways likely freezing if left untreated as
      Arctic air builds S across the region late Sunday into Sunday night.
      - Will make for significant impacts during the Monday AM commute,
      especially along the Boston - Providence corridor and points S&E.


   - Marine.
      - Gale warnings on all waters.
      - Moderate to freezing spray developing Sunday night on through
      Monday, perhaps continuing into Tuesday morning.

Respectfully,

Benjamin Sipprell
Meteorologist
NWS Boston / Norton

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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