[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 071549
SWOMCD
SPC MCD 071549 
MDZ000-NCZ000-VAZ000-071645-

MESOSCALE DISCUSSION 1556
NWS STORM PREDICTION CENTER NORMAN OK
1049 AM CDT WED JUL 07 2004

AREAS AFFECTED...CENTRAL-ERN VA/PORTIONS SRN MD SWD TO NRN NC

CONCERNING...OUTLOOK UPGRADE 

VALID 071549Z - 071645Z

SLIGHT RISK OVER THE INTERIOR NERN STATES WILL BE EXTENDED SWD
ACROSS MUCH OF CENTRAL-ERN VA/SRN MD TO NRN NC WITH THE 1630Z DAY 1
CONVECTIVE OUTLOOK.

REGIONAL RADARS SHOWED A LINE OF THUNDERSTORMS DEVELOPED DURING THE
LAST HOUR ALONG THE FOOTHILLS OF CENTRAL VA...WITHIN REGION OF WEAK
UPSLOPE FLOW COMBINED WITH INCREASING LARGE SCALE ASCENT AHEAD OF
UPPER OH VALLEY SHORT WAVE TROUGH.  AIR MASS OVER CENTRAL-ERN VA/SRN
MD SWD TO NRN NC HAS BECOME MODERATELY UNSTABLE...WHERE STRONG
SURFACE HEATING /SURFACE TEMPERATURES IN THE UPPER 80S/LOWER 90S/
AND ABUNDANT MOISTURE IS RESULTING IN A MODERATELY TO VERY UNSTABLE
AIR MASS.  VAD WIND DATA FROM CENTRAL PA SWWD TO SWRN VA INDICATED A
BAND OF 30-40 KT WSWLY LOW-MID LEVEL FLOW WHICH WILL SUPPORT LINE
SEGMENTS AND A FEW SPLITTING SUPERCELLS...WITH MAINLY A THREAT FOR
DAMAGING WINDS.  IF ACTIVITY SHOWS SIGNS OF INCREASING IN AREAL
COVERAGE AND INTENSITY...THEN A WW MAY BECOME NECESSARY.

..PETERS.. 07/07/2004

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

ATTN...WFO...AKQ...MHX...LWX...RAH...RNK...

36587839 37847833 38737719 38577618 36717626 35787673
35577766 35937850 

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