813 
ACUS11 KWNS 081750
SWOMCD
SPC MCD 081749 
OKZ000-KSZ000-082045-

MESOSCALE DISCUSSION 0850
NWS STORM PREDICTION CENTER NORMAN OK
1249 PM CDT THU MAY 08 2003

AREAS AFFECTED...WRN OK...SRN KS

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 081749Z - 082045Z

...THUNDERSTORMS MAY DEVELOP EARLIER THAN EXPECTED ALONG DRY LINE
ACROSS OK AND PORTIONS OF KS.  TORNADO WATCH MAY BE REQUIRED IN THE
NEXT 1-2 HOURS..

BOUNDARY LAYER CU FIELD IS EXPANDING/DEEPENING RAPIDLY AHEAD OF DRY
LINE FROM SWRN OK...NEWD INTO SOUTH CENTRAL KS.  THIS DEVELOPMENT IS
OCCURRING WITHIN VERY MOIST/UNSTABLE AIR MASS WHERE SFC BASED CAPE
VALUES ARE IN EXCESS OF 4500 J/KG AND DEEP LAYER SHEAR ON THE ORDER
OF 40-50KT.  THUNDERSTORMS MAY DEVELOP MUCH QUICKER ALONG THE DRY
LINE THAN EARLIER THOUGHTS OF DELAYED INITIATION.  TORNADO WATCH MAY
BE REQUIRED IF CONVECTION CONTINUES TO DEEPEN.

..DARROW.. 05/08/2003

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

ATTN...WFO...ICT...OUN...

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