SWODY1
SPC AC 301610
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1010 AM CST FRI JAN 30 2009
VALID 301630Z - 311200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
LARGE AND DEEP UPPER TROUGH OVER THE ERN HALF OF THE COUNTRY WILL
SHIFT EWD TO THE ATLANTIC COASTAL STATES BY SATURDAY MORNING. IN THE
WEST...RIDGE WILL GRADUALLY DEAMPLIFY AS A SHORTWAVE TROUGH DIGS
ESEWD THROUGH THE SRN CANADIAN ROCKIES. THIS SETUP WILL MAINTAIN
COOL AND STABLE CONDITIONS ACROSS MOST OF THE CONUS.
...SRN FL...
A COLD FRONT...ROUGHLY ALONG A VRB TO APF LINE AT LATE MORNING...
WILL MOVE SEWD THROUGH THE REST OF SRN FL THIS AFTERNOON.
CONSIDERABLE CLOUDS AND SHOWERS ARE LOCATED ALONG AND BEHIND THE
FRONT...REDUCING INSTABILITY NEAR THE SURFACE CONVERGENCE. SLIGHTLY
STRONGER CONVECTION WAS LOCATED WEST OF THE KEYS WHERE CONVERGENCE
APPEARED TO BE A LITTLE STRONGER ALONG THAT PORTION OF THE FRONT.
WHILE AN ISOLATED LIGHTNING STRIKE IS POSSIBLE WITH THIS CONVECTION
...WEAK LAPSE RATES/LOW LEVEL CONVERGENCE SUGGEST SHOWERS GENERALLY
WILL NOT BE DEEP ENOUGH FOR CHARGE SEPARATION. THEREFORE...
MAINTAINING A LESS THAN 10% PROBABILITY FOR LIGHTNING ACROSS SRN
PENINSULA/KEYS.
..IMY.. 01/30/2009
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