SWOMCD
SPC MCD 261627
NCZ000-VAZ000-261800-
MESOSCALE DISCUSSION 2293
NWS STORM PREDICTION CENTER NORMAN OK
1127 AM CDT FRI SEP 26 2008
AREAS AFFECTED...PORTIONS OF S-CNTRL AND SERN VA INTO CNTRL AND NERN
NC
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 261627Z - 261800Z
THE POTENTIAL FOR A BRIEF TORNADO OR TWO WILL EXIST WITH ANY MORE
SUSTAINED STORMS EARLY THIS AFTERNOON. THIS THREAT SHOULD TEND TO
DECREASE WITH TIME AND A WW IS NOT CURRENTLY ANTICIPATED.
AN EFFECTIVE WARM FRONT HAS BECOME ESTABLISHED TODAY FROM CNTRL NC
ENEWD TO ALONG THE SERN VA/NERN NC BORDER ALONG THE LEADING EDGE OF
A MARITIME AIR MASS WHICH HAS BEEN ADVECTED INLAND BY
DEEP-LAYER...HYBRID LOW CURRENTLY N OF CAE. MOREOVER...THIS
BOUNDARY IS BEING REINFORCED BY DIFFERENTIAL HEATING ARISING FROM
WIDESPREAD CLOUDINESS OVER WRN/CNTRL NC AND MUCH OF VA.
AN ONGOING BAND OF TSTMS HAS PERSISTED THROUGH THE MORNING ON OUTER
PERIPHERY OF CYCLONE CIRCULATION WITH THIS ACTIVITY EXTENDING FROM
GREENSVILLE AND SOUTHAMPTON COUNTIES IN SERN VA TO BERTIE COUNTY NC
AS OF 1620Z. RADAR DATA HAVE SHOWN A TENDENCY FOR INCREASED
LOW-LEVEL ROTATION AS THESE STORMS MOVE NWD ACROSS THIS BAROCLINIC
ZONE WHERE LOW-LEVEL SHEAR IS BEING MAXIMIZED. THIS POTENTIAL FOR
LOW-LEVEL ROTATION AND ATTENDANT TORNADO THREAT SHOULD TEND TO
DIMINISH THROUGH THE AFTERNOON AS SURFACE LOW CONTINUES WWD AWAY
FROM REGION...RESULTING IN A DECREASE IN LOW-LEVEL SHEAR.
..MEAD.. 09/26/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...AKQ...MHX...RAH...RNK...
35217860 35697928 36607911 36987782 36937712 36617608
35847666 35067830
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