[Weather] [2020-04-20 AM] NWS Boston EM Briefing - Scattered Thunderstorms Tuesday Afternoon and Gusty Winds Tuesday into Wednesday

[BOX Operations - NOAA Service Account]

Good morning,

A strong cold front will bring scattered heavy showers and thunderstorms
Tuesday afternoon and strong gusty winds Tuesday into Wednesday. It will
also bring with it a shot of unseasonably colder air and wind chills
Tuesday night.

*Headlines:*

   - *Gale Watch*: For all waters except Narragansett Bay and Boston
   Harbor. In effect Tuesday afternoon to Wednesday evening.


*Details:*

*Gusty Winds: Tuesday into Wednesday*

   - *Timing: *South winds through Tuesday afternoon. West-northwest winds
   Tuesday evening into Wednesday. Strongest winds expected Tuesday night into
   Wednesday, decreasing later Wednesday afternoon.
   - *Peak Wind Gusts: *
      - *Tuesday: *25-40 mph.
      - *Tuesday Night -  Wednesday: *35-50 mph.
   - *Impacts:* Scattered tree and powerline damage, especially Tuesday
   night into Wednesday. The winds combined with temperatures in the 20s to
   low 30s on Tuesday night to produce wind chills in the teens to lower 20s
   Tuesday night for outdoor operations.
   - *Confidence*: Moderate to high on wind gust speeds, lower confidence
   on the coverage of wind gusts over 45 mph, and on the end timing to the
   higher gusts.

       * *Note*: Wind Advisories *may* be needed to address gusty winds if
confidence increases in
         the coverage of stronger wind gusts.*

*Thunderstorms - Some Strong to Severe: Tuesday Afternoon into Early
Evening*

   - *Timing: *Between 1 to 8 PM Tuesday.
   - *Thunderstorm Coverage:* Scattered.
   - *Threats:* Capable mainly of heavy downpours, lightning, small
   hailstones and gusty winds 35-50 mph. Low risk of severe storms that may
   produce hail up to 1" in diameter and wind gusts capable of causing
   sporadic tree and powerline damage.
   - *Confidence:* Higher confidence in the timing. Lower confidence on
   severe storm coverage. Storms may tend more in the "strong" category than
   severe, and not every town will see thunderstorms.


Attached graphics include the peak wind gusts Tuesday night into Wednesday,
and the Severe Weather Outlook for Tuesday.

Thank You!

Meteorologists: Andrew Loconto and Matt 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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