SWODY2
SPC AC 151656
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1156 AM CDT WED OCT 15 2008
VALID 161200Z - 171200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
PROGRESSIVE ZONAL FLOW WILL PERSIST THROUGH THURSDAY OVER THE NRN
HALF OF THE COUNTRY. SERIES OF EMBEDDED VORTICITY MAXIMA WILL MOVE
THROUGH THIS REGIME. COLD FRONT INITIALLY FROM LOWER GREAT LAKES SW
THROUGH ERN TX WILL MOVE SE AND LIKELY EXTEND FROM NC SWWD INTO THE
NWRN GULF BY THE END OF THIS PERIOD.
...SERN TX THROUGH MID ATLANTIC REGION...
AXIS OF MOSTLY MODIFIED CP AIR WILL PERSIST AHEAD OF THE FRONT AS IT
CONTINUES SE WITH DEWPOINTS MOSTLY IN THE LOW 60S. AN EXCEPTION WILL
BE NEAR THE TX COASTAL AREAS WITH LOW 70S LIKELY. WEAK LAPSE RATES
AND AREAS OF CLOUDS WILL LIMIT INSTABILITY WITH MUCAPE GENERALLY AOB
500 J/KG...BUT SOMEWHAT HIGHER OVER SERN TX WHERE GREATER BOUNDARY
LAYER MOISTURE WILL EXIST. SCATTERED CONVECTION WILL PERSIST MAINLY
WITHIN ZONE OF POST FRONTAL ASCENT...BUT LIGHTNING ACTIVITY SHOULD
REMAIN SPARSE DUE TO WEAK INSTABILITY.
..DIAL.. 10/15/2008
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