[Weather] Potential Severe Thunderstorms This Afternoon/Evening & Heat Advisory in Effect

[BOX Operations - NOAA Service Account]

Good morning everyone,

Outlined below are potential weather hazards this afternoon and evening.

*What ...* Potential severe thunderstorms with torrential downpours,
localized flooding, and strong winds are possible.  Also, excessive heat
and humidity is expected this afternoon with heat indices approaching or
exceeding 100 degrees, thus a Heat Advisory has been posted for a portion
of the area.

*Where ... *For severe thunderstorms, all of Connecticut into northern
Rhode Island and all of northern Massachusetts including the city of
Boston.  The risk of strong storms is lower across the south coast of MA
and RI.  A heat advisory has been posted for northeast Massachusetts
including Metro-West.

*When ... *The risk for potential severe thunderstorms exist between 1 pm
and 10 pm, however the greatest risk is between 4 pm and 8 pm. Heat indices
approaching or exceeding 100 degrees will occur between 1 pm and 5 pm
today.

*Forecast Uncertainty ... *areal coverage of strong thunderstorms is not
quite clear.  Current thinking is storms will be scattered, meaning one
town can be impacted by torrential rainfall and localized flooding while a
neighboring town has very little to no impact.  The threat for strong
storms appears to be highest across CT, into northern RI and across all of
northern MA including the city of Boston.  As for heat indices, depending
on the amount of cloud cover today, the combination of very warm
temperatures and tropical humidity, heat indices will likely approach or
exceed 100 degrees.

Attached are four graphics to help communicate the areal threat of strong
thunderstorms, heavy rainfall/flooding and heat advisory.

Frank Nocera & Bryce Williams

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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