[Weather] [2019.07.16] Heavy Rain and Heat hazards from Wednesday through the weekend

[BOX Operations - NOAA Service Account]

Good morning,

Outlined below are potential weather hazards for the coming week. The
details may shift a little during the week, but we have confidence that
they will occur. Both weather events may require headlines to be issued.

*1.)  Remnants of Barry.*

*What ...* Heavy downpours are possible from late Wednesday through
Thursday, as the remnants of Hurricane Barry pass south of Southern New
England.  Along with the downpours, scattered thunderstorms will occur.
Heavy downpours may cause flooding of poor-drainage areas.

*Where ... *All areas of Southern New England could be affected. At this
time, the best chance of the downpours will be across Northern Connecticut,
Rhode Island, and Southeast Massachusetts.

*When ... *Initial showers will arrive in Western Massachusetts and
Adjacent Connecticut Wednesday morning. The heaviest showers and
thunderstorms will take place between 6 PM Wednesday evening and 6 PM
Thursday evening.

*Forecast Uncertainty ... *Initial thunderstorms Wednesday may favor
Northern Massachusetts, as a cold front moves south. The track of the
remnants will determine the location of the heaviest rain.  Showers and
thunderstorms will not cover every square acre of the region; this means
one town could be impacted by torrential rainfall and localized flooding
while a neighboring town would have very little to no impact.

*2.)  Weekend heat and humidity*

*What ...*  Hot and humid weather will move into Southern New England
behind the remnants of Hurricane Barry.  Temperatures will reach the 90s
each day, with some places reaching 100F on Saturday.  Dew points will be
70 to 75 during this time.  This means heat index values will be 95F to
103F on Friday and Sunday, and 100F to 107F on Saturday.

*Where ...* All areas of Southern New England away from the immediate
coastline could be affected.

*When ... *Highest values will be during the afternoon and evening of
Friday, Saturday, and Sunday.  Saturday will be the hottest day, with
appreciable heat and humidity on Friday and Sunday as well.  A warning or
advisory may be needed* for one or all of these days.*

*Forecast Uncertainty ...* Temperatures and dew points for these days may
shift higher or lower than the forecast, which would change the heat index
values higher or lower. Even so, we are confident readings will be close to
if not in warning/advisory levels.

Graphics are attached to help communicate the areal threat of heavy
rainfall/flooding for Wednesday and Thursday, and to communicate the heat
values expected for Friday and Saturday.

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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