MESO: Mesoscale Discussion 1436

ACUS11 KWNS 082022
SWOMCD
SPC MCD 082021
NJZ000-DEZ000-MDZ000-VAZ000-DCZ000-WVZ000-OHZ000-KYZ000-082115-

MESOSCALE DISCUSSION 1436
NWS STORM PREDICTION CENTER NORMAN OK
0321 PM CDT SUN JUL 08 2012

AREAS AFFECTED...EXTREME ERN KY...FAR SERN OH...MUCH OF
WV...CNTRL/NRN VA...MD/DE...WASHINGTON DC

CONCERNING...SEVERE THUNDERSTORM WATCH 481...

VALID 082021Z - 082115Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 481
CONTINUES.

SUMMARY...SVR WEATHER THREAT FOR WW 481 CONTINUES.

DISCUSSION...AT 20Z...VISIBLE SATELLITE AND REGIONAL RADAR IMAGERY
SHOW CLUSTERS OF STORMS MOVING E-SE AT AROUND 20 KT ALONG A COLD
FRONT FROM NRN WV INTO NRN VA AND MD. OTHER MORE ISOLATED ACTIVITY
WAS LOCATED OVER THE WARM SECTOR IN CNTRL VA. SPECIAL SOUNDING FROM
IAD INDICATES AIRMASS ACROSS WW 481 IS CHARACTERIZED BY A VERY
HOT/MOIST BOUNDARY LAYER WHICH IS CONTRIBUTING TO MLCAPE VALUES NEAR
4000 J/KG. DEEP-LAYER WLY FLOW ALSO INCREASES WITH HEIGHT...AND IS
YIELDING EFFECTIVE BULK SHEAR AROUND 30 KT. THUS...ENVIRONMENT ALONG
AND S OF THE COLD FRONT SUPPORTS A CONTINUED THREAT FOR DAMAGING
WIND GUSTS AND LARGE HAIL THROUGH THE AFTERNOON.

..GARNER.. 07/08/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...JKL...

LAT...LON 38968245 39557513 37837495 37238226 38968245

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