MESO: Mesoscale Discussion 1739

ACUS11 KWNS 312047
SWOMCD
SPC MCD 312047
VAZ000-NCZ000-312215-

MESOSCALE DISCUSSION 1739
NWS STORM PREDICTION CENTER NORMAN OK
0347 PM CDT FRI JUL 31 2009

AREAS AFFECTED...SERN VA AND CNTRL/ERN NC

CONCERNING...SEVERE THUNDERSTORM WATCH 645...

VALID 312047Z - 312215Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 645
CONTINUES.

MULTIPLE BANDS OF TSTMS HAVE DEVELOPED ACROSS SERN VA AND CNTRL
NC...GENERALLY AHEAD OF THE PRIMARY SYNOPTIC CDFNT LOCATED ACROSS
THE APLCN MOUNTAINS. LATEST MESOANALYSIS SUGGEST THAT THE STEEPEST
LLVL LAPSE RATES EXTENDED FROM THE CSTL PLNS /W OF THE SEABREEZE/
NWD INTO EXTREME SERN VA AROUND KORF. TSTMS SHOULD HAVE NO PROBLEM
MAINTAINING CHARACTER AS THEY MOVE INTO/THROUGH THIS AXIS LATE THIS
AFTN.

STRONGEST DEEP LAYER SHEAR WAS LOCATED GENERALLY N/NW OF THE REGION
WITH RAX VWP SHOWING LESS THAN 30 KTS OF 0-6KM SHEAR.
HOWEVER...PRESENCE OF A HOT BOUNDARY LAYER...VERY MOIST CONDITIONS
AND A DEEP LAYER OF WSW UNIDIRECTIONAL FLOW WILL BE FAVORABLE FOR
OCNL BOWS GIVING DMGG WIND GUSTS. THIS WILL ESPECIALLY BE THE CASE
BEFORE THE STORMS OVER CNTRL/ERN NC COLLIDE WITH THE SEABREEZE AND
ACROSS SERN VA.

..RACY.. 07/31/2009

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

ATTN...WFO...AKQ...MHX...RAH...

LAT...LON 35047961 36367862 37847747 37347589 36357621 35077799
35047961

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.