ZCZC SPCSWOMCD ALL
ACUS11 KWNS 232147 
SPC MCD 232147 
MEZ000-MAZ000-NHZ000-RIZ000-VTZ000-CTZ000-232245-

Mesoscale Discussion 1333
NWS Storm Prediction Center Norman OK
0447 PM CDT Fri Jul 23 2021

Areas affected...portions of New England.

Concerning...Severe potential...Watch unlikely 

Valid 232147Z - 232245Z

Probability of Watch Issuance...20 percent

SUMMARY...Scattered strong to isolated severe storms are forecast to
persist for a few hours.

DISCUSSION...Despite weak shear, several severe storms have occurred
across the Northeast over the past few hours with reports of
damaging wind and severe hail. The instability fueling this activity
is entirely diurnally driven and thus the threat should start to
wane pretty quickly this evening. However, in the meantime, MLCAPE
around 500 J/kg and cool air aloft will continue to support a threat
for a few strong to isolated severe storms. This is supported by the
20Z HRRR which shows storms mostly weakened by 00Z.

..Bentley/Edwards.. 07/23/2021

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

ATTN...WFO...GYX...BOX...BTV...

LAT...LON   44627151 44216988 43876953 43716959 43587001 43337033
            42997058 42727069 42167057 41637048 41367092 41467130
            41807206 42987210 43997220 44697197 44627151 

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