DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 240729
SWODY3
SPC AC 240728

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0228 AM CDT THU OCT 24 2013

VALID 261200Z - 271200Z

...NO SVR TSTM AREAS FORECAST...

AN UPPER-LEVEL TROUGH IS FORECAST TO MOVE SEWD INTO THE SRN PLAINS
ON SATURDAY. AT THE SFC...FLOW WILL BECOME SLY ACROSS THE SRN PLAINS
AS HIGH PRESSURE IN THE CNTRL GULF COAST STATES MOVES EWD AWAY FROM
THE REGION. THIS WILL ENABLE MOISTURE TO RETURN NWD INTO WCNTRL AND
NORTHWEST TX ALLOWING FOR SOME DESTABILIZATION SATURDAY AFTERNOON.
THUNDERSTORM DEVELOPMENT SHOULD OCCUR ALONG THE INSTABILITY AXIS
ACROSS THE LOW ROLLING PLAINS SSEWD INTO THE WRN TX HILL COUNTRY.
FORECAST SOUNDINGS FOR 21Z/SAT AT ABILENE SHOW SBCAPE VALUES OF 1000
TO 1200 J/KG WITH ABOUT 30 KT OF DEEP LAYER SHEAR. THIS ALONG WITH
20 TO 30 KT OF LOW-LEVEL FLOW COULD BE ENOUGH FOR A MARGINAL SEVERE
THREAT. A FEW STRONG WIND GUSTS MAY OCCUR WITH CONVECTION THAT CAN
DEVELOP WHERE INSTABILITY BECOMES MAXIMIZED.

..BROYLES.. 10/24/2013

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