SPC AC 070656
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1256 AM CST SAT NOV 07 2009
VALID 091200Z - 101200Z
...MID MS VALLEY THROUGH GREAT LAKES...
MODIFIED CP AIR WITH DEWPOINTS IN THE LOW 50S WILL PERSIST AHEAD OF
NRN STREAM UPPER TROUGH AND ITS ATTENDANT COLD FRONT THAT WILL MOVE
THROUGH THE PLAINS...MS VALLEY AND GREAT LAKES REGION THIS PERIOD.
AN AXIS OF WEAK INSTABILITY IS FORECAST TO DEVELOP WHERE THERMAL
TROUGH OVERTAKES WRN EDGE OF MOIST AXIS. A FEW NON-SEVERE
THUNDERSTORMS WILL BE POSSIBLE WITHIN ZONE OF DEEPER ASCENT ALONG
THE SEWD ADVANCING FRONT FROM THE MID MS VALLEY THROUGH A PORTION OF
THE GREAT LAKES DURING THE AFTERNOON AND EVENING.
...CNTRL THROUGH NERN GULF COASTAL REGION...
UPPER LOW THAT WILL MOVE THROUGH TX SUNDAY WILL BECOME AT LEAST
LOOSELY PHASED WITH NRN STREAM UPPER TROUGH AS IT ADVANCES EAST INTO
THE SERN STATES ON MONDAY. TROPICAL DEPRESSION IDA IS FORECAST BY
NHC TO CONTINUE A GENERAL NWD MOTION...REACHING THE CNTRL GULF OF
MEXICO MONDAY EVENING. THIS FEATURE WILL LIKELY BECOME THE DOMINANT
CIRCULATION OVER THE GULF. UNLESS IDA ACCELERATES NWD...THE MOIST
WARM SECTOR AND ANY SEVERE THREAT WILL PROBABLY REMAIN OFFSHORE.
NEVERTHELESS...DEEP TROPICAL MOISTURE WILL ADVECT NWD IN ADVANCE OF
THIS SYSTEM RESULTING IN A THREAT OF WIDESPREAD SHOWERS OVER THE
GULF COASTAL STATES.
..DIAL.. 11/07/2009
NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0830Z
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