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
ATTN...WFO...ICT...OUN...
34799926 36239855 37389822 37619744 36919724 34829862
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