SWODY3
SPC AC 160657
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0157 AM CDT FRI OCT 16 2009
VALID 181200Z - 191200Z
AN UPPER-LEVEL LOW OVER THE SRN APPALACHIAN MTNS WILL MOVE ACROSS
THE ERN SEABOARD BY SUNDAY AS A BROAD UPPER-LEVEL RIDGE MOVES INTO
THE GREAT PLAINS. AT THE SFC...HIGH PRESSURE WILL DOMINATE THE MS
VALLEY AND GULF COAST REGION SUPPRESSING MOISTURE RETURN. FOR THIS
REASON...CONVECTION IS NOT EXPECTED ACROSS MOST OF THE CONUS SUNDAY
AND SUNDAY NIGHT. THE EXCEPTION WOULD BE IN THE PACIFIC NORTHWEST
WHERE TEMPS ALOFT WILL BE COLD AND LARGE-SCALE ASCENT ASSOCIATED
WITH AN UPPER-LEVEL TROUGH COULD ENCOURAGE ISOLATED THUNDERSTORM
ACTIVITY. NONE OF THE CONVECTION IS EXPECTED TO BE ORGANIZED DURING
THE DAY 3 PERIOD.
..BROYLES.. 10/16/2009
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