

006 

WWUS20 KWNS 191816

SEL0

SPC WW 191816

CTZ000-MAZ000-MEZ000-NHZ000-RIZ000-CWZ000-200000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 600

NWS Storm Prediction Center Norman OK

220 PM EDT Mon Aug 19 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeastern Connecticut

  Much of Massachusetts

  Extreme southern Maine

  Southeastern New Hampshire

  Rhode Island

  Coastal Waters



* Effective this Monday afternoon and evening from 220 PM until

  800 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1 inch in diameter possible



SUMMARY...Scattered thunderstorms will form and spread eastward

through the afternoon in advance of a surface cold front.  The storm

environment ahead of the front will favor multicell clusters capable

of producing damaging winds and marginally severe hail through the

afternoon.



The severe thunderstorm watch area is approximately along and 45

statute miles east and west of a line from 20 miles west northwest

of Portland ME to 25 miles southeast of Windsor Locks CT. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU0).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Severe Thunderstorm Watch means conditions are

favorable for severe thunderstorms in and close to the watch area.

Persons in these areas should be on the lookout for threatening

weather conditions and listen for later statements and possible

warnings. Severe thunderstorms can and occasionally do produce

tornadoes.



&&



AVIATION...A few severe thunderstorms with hail surface and aloft to

1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 500. Mean storm motion vector

27025.



...Thompson

