ACUS11 KWNS 091721
SWOMCD
SPC MCD 091720=20
NJZ000-NYZ000-PAZ000-DEZ000-MDZ000-091845-

Mesoscale Discussion 1475
NWS Storm Prediction Center Norman OK
1220 PM CDT Sun Jul 09 2023

Areas affected...Eastern Pennsylvania and vicinity

Concerning...Severe Thunderstorm Watch 465...

Valid 091720Z - 091845Z

The severe weather threat for Severe Thunderstorm Watch 465
continues.

SUMMARY...Greatest severe weather threat transitioning to southern
portions of watch 465.

DISCUSSION...The northern 2/3rds of watch 465 has transitioned
mostly to a heavy rain threat as widespread thunderstorms have
cooled the airmass. A few pockets of greater instability remain
within this region and therefore, the watch is still in effect, but
within the next few hours the watch may be able to be cancelled for
these areas.=20

The area where the greatest severe weather threat remains is across
the southern 1/3 of watch 465. This area continues to destabilize
with temperatures in the upper 80s, yielding 2000 J/kg MLCAPE (per
SPC mesoanalysis). Therefore, any storms which form in this region,
or move into this area from the west and intensify, will pose a
greater severe weather threat. Damaging wind gusts remain the
primary threat.

..Bentley.. 07/09/2023

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7nnBmyxHn5ngH1XKaHqsBVOIdR6u5pV8t9190F1YC5ktCCDxGWXOkQp7EG2MkzmSHVO3ck_nz= 7gG36Xx8qgGsFPPTO8$ for graphic product...

ATTN...WFO...OKX...PHI...BGM...CTP...LWX...

LAT...LON 39717763 40277753 41237665 41647561 41387452 41097415
40497419 39847471 39547497 39427631 39517733 39717763=20


=3D =3D =3D
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