[Weather] NWS Boston 11/17 Afternoon Briefing: Coastal Storm Impacts Tonight Into Monday

Sun Nov 17 20:59:00 UTC 2019

Good afternoon everyone,

We did expand the winter weather advisory to include all of our area just
to the northwest of the Boston to Providence corridor.  While some spotty
freezing drizzle is possible this evening, there is a higher risk for
pockets of light freezing rain/freezing drizzle after midnight and into
Monday morning.  Biggest concern is the Monday morning commute where
untreated roads may be icy. Pockets of minor coastal flooding are still
expected during the Monday afternoon high tide along the eastern MA coast,
but impacts will just be some brief flooding of some typically vulnerable
shoreline roads.  Wind Advisories are also in effect for the Cape/Islands,
but speeds will not be high enough to result in significant problems.

*Changes From This Morning's Brieflings: *

   - *Winter Weather Advisory Expanded [*Tonight Into Monday Morning]: The
   Winter Weather Advisory has been expanded to also include interior
   northeast MA as well as southwest MA, northern CT and northwest RI.
   - *Wind Advisory Expanded [Early Monday Morning Into Early Monday
   Evening]:* Wind Advisory Expanded to Include Cape Cod

Details below:

*Interior Light Icing:*
*Locations*: Western, central and interior northeast MA, as well as
northern CT and northwest RI.
*Timing:* Some spotty freezing drizzle is possible later this evening.
Greater risk for pockets of light freezing rain/freezing drizzle after
midnight and into the Monday morning commute.
*Amounts*: Up to 1/10 inch of icing.
*Impact*: Slippery travel, impacting Monday AM commute.
*Confidence:* High.

*Strong Winds:*
*Locations*: Dukes and Nantucket Counties into Block Island, and Cape Cod.
*Timing:* 6 AM Monday through early Monday evening.
*Sustained Wind:* NE 25 to 35 mph.
*Wind Gusts:* NE 35 to 45 mph with a few gusts up to 50 mph possible.
*Impact*: Minor damage such as downed tree limbs. Perhaps Isolated power
outages.
*Confidence:* High.

*Marine Impacts:*
*Locations*: Massachusetts and Rhode Island coastal waters
*Timing:* Tonight and Monday
*Wind Gusts:* NE 35 to 45 kt.
*Seas:* 4 to 9 ft on the inner bays and sounds; 13 to 17 ft offshore.
*Confidence:* High.

*Minor Coastal Flooding:*
*Locations*: Eastern Massachusetts coast
*Timing:* Monday afternoon high tide (3:10 PM at Boston and 4:17 PM on
Nantucket)
*Storm Surge:* 1.5 to 2.0 feet
*Inundation:* Less than 1 foot above ground level
*Impact*: Some vulnerable shoreline roads may become temporarily impassable
around high tide. Minor beach erosion is also possible.
*Confidence:* High. It remains unlikely that the storm surge exceeds 2.0
feet so any impacts are expected to be minor.

Updated storm total ice, maximum wind gust and maximum wave height graphics
are attached, as well as an overview of issued hazards.

Please let us know if you have any questions or concerns. This email will
be updated early Monday morning.

Thank You

Meteorologist: Hayden Frank

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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