[Weather] NWS Boston 11/17 Morning Briefing: Coastal Storm Impacts Overnight Into Monday

[BOX Operations - NOAA Service Account]

Good morning everyone,

Little significant changes to forecast expectations regarding a coastal
storm which looks to pass southeast of Nantucket Monday. This coastal storm
will bring the potential for light icing across parts of the interior,
strong winds near the coast, and minor coastal flooding to eastern
Massachusetts on Monday.

*Changes from yesterday afternoon's briefing: *

   - *Winter Weather Advisory Issued[*Midnight Thru Noon Monday]: Franklin,
   Hampshire, Worcester and Middlesex Counties in MA due to light ice
   accretions. *Note:* Expansion of the Winter Weather Advisory *may* be
   needed in later updates into Hampshire, Hartford, Tolland Counties in
   western MA and northern CT, and into western Essex County in eastern MA.
   - *Wind Advisory Issued*[1 AM Thru 5 PM Monday]: Dukes and Nantucket
   Counties in MA and Block Island in RI for strong northeast winds.
   *Note:* Expansion of the Wind Advisory *may* be needed in later updates
   for Cape Cod.
   - *Coastal Flood Advisory Issued*[2 PM to 5 PM Monday]: Eastern MA
   coast, Barnstable and Nantucket Counties for minor coastal flooding
   at/around the Monday afternoon high tide.


Details below:

*Interior Light Icing:*
*Locations*: Western and central Massachusetts and part of northern
Connecticut, especially in the higher elevations from the east slopes of
the Berkshires, Worcester Hills, and hills of Hartford and Tolland Counties.
*Timing:* Midnight through 10 AM Monday
*Amounts*: Up to 1/10 inch of icing
*Impact*: Slippery travel, impacting Monday AM commute.
*Confidence:* Highest confidence in the Winter Weather Advisory area of
light ice accretions. A brief period of freezing rain is possible in
western Essex County MA and into Hartford & Tolland Counties, but lowered
confidence in these areas due to potential for temperatures remaining just
above freezing.

*Strong Winds:*
*Locations*: Mainly Dukes and Nantucket Counties into Block Island, and
Cape Cod.
*Timing:* 1 AM through 10 AM Monday.
*Sustained Wind:* NE 25 to 35 mph.
*Wind Gusts:* NE 35 to 45 mph with a few gusts up to 50 mph possible. Gusts
to 40 mph across Cape Cod.
*Impact*: Minor damage such as downed tree limbs. Perhaps Isolated power
outages.
*Confidence:* High across the Islands, lesser/moderate confidence for Cape
Cod. Greatest potential for wind gusts capable of minor impacts toward the
Islands, but may be possible for Cape Cod.

*Marine Impacts:*
*Locations*: Massachusetts and Rhode Island coastal waters
*Timing:* 5 PM Sunday through 10 AM Monday on the south coastal waters; 11
PM Sunday to 4 PM Monday on the eastern waters
*Wind Gusts:* NE 35 to 45 kt.
*Seas:* 4 to 9 ft on the inner bays and sounds; 14 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.

Next update will be sent Sunday afternoon.

Meteorologists: Andrew Loconto and Kevin Cadima

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>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.massupt.org/pipermail/weather/attachments/20191117/d8968671/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Maximum Wave Heights.png
Type: image/png
Size: 74334 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20191117/d8968671/attachment-0004.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: MaximumWindGustsMPH.png
Type: image/png
Size: 118704 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20191117/d8968671/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: StormTotalIce.png
Type: image/png
Size: 115592 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20191117/d8968671/attachment-0006.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Hazards.png
Type: image/png
Size: 220670 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20191117/d8968671/attachment-0007.png>