ZCZC SPCSWOMCD ALL
ACUS11 KWNS 062023 
SPC MCD 062023 
MAZ000-NHZ000-RIZ000-CTZ000-NYZ000-VTZ000-NJZ000-PAZ000-DEZ000-MDZ000-062200-

Mesoscale Discussion 1164
NWS Storm Prediction Center Norman OK
0323 PM CDT Tue Jul 06 2021

Areas affected...RI...MA...CT...NJ...southeast NY...eastern
PA...northern DE...far northeast MD...southern VT/NH

Concerning...Severe Thunderstorm Watch 335...336...

Valid 062023Z - 062200Z

The severe weather threat for Severe Thunderstorm Watch 335, 336
continues.

SUMMARY...The threat for damaging winds continues across the
remaining valid portions of Severe Thunderstorm Watches 335 and 336.

DISCUSSION...Several clusters of severe storms were in progress at
2015z from western MA southwest into northeast PA, with reports of
measured severe gusts and wind damage.  The downstream environment
will remain favorable for a continued severe risk with
moderate/strong MLCAPE and 30-35 kts of westerly flow in the 850-700
mb layer.  Damaging downburst winds remain the primary hazard as
storms move east/southeast through the early evening hours.

Farther south across WW 336, latest visible imagery shows increasing
vertical development of a cumulus field within a weakly confluent
zone over southeast PA, where strong instability is in place with
MLCAPE in excess of 2500 J/kg.  Isolated thunderstorm development
has occurred over the past hour, and additional development is
expected through early evening with multicell clusters posing a risk
for damaging winds and perhaps hail.

..Bunting.. 07/06/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...GYX...BOX...OKX...ALY...PHI...BGM...CTP...LWX...

LAT...LON   42117592 42857301 42857147 42597081 42077068 41457105
            41017251 40637398 39867416 39137490 39007513 39267607
            39687662 40037688 41047665 42117592 

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