SPC AC 220630
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1230 AM CST THU NOV 22 2007
VALID 231200Z - 241200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
LARGE-SCALE UPPER TROUGH TO PERSIST ACROSS THE ERN 3/4 OF THE
CONUS...AS A SHORTER-WAVELENGTH TROUGH MOVES OFF THE NORTHEAST U.S.
COAST AND A SECOND CONTINUES TO DIG SEWD ACROSS THE DESERT SW TOWARD
NWRN MEXICO LATE. MEANWHILE...RIDGING WILL BEGIN TO EXPAND ACROSS
THE WEST AS THE MEAN UPPER TROUGH SHIFTS SLOWLY EWD.
AT THE SURFACE...COLD FRONT -- ALREADY OFF THE ATLANTIC AND GULF
COASTS PRIOR TO THE START OF THE PERIOD -- WILL CONTINUE MOVING
SLOWLY SWD ACROSS THE FL PENINSULA. WHILE SHOWERS AND THUNDERSTORMS
ARE EXPECTED TO ACCOMPANY THIS FRONT...WEAK INSTABILITY SHOULD
PRECLUDE ANY SEVERE POTENTIAL.
ELSEWHERE...A FEW THUNDERSTORMS WILL BE POSSIBLE ACROSS PARTS OF AZ
AND VICINITY AS UPPER SHORT-WAVE TROUGH DIGS SEWD ACROSS THIS
REGION...AND THUNDER MAY ALSO OCCUR ACROSS S TX LATE AS ELEVATED
CONVECTION SPREADS NWD WITHIN EXPANDING WARM ADVECTION ZONE.
..GOSS.. 11/22/2007
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
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