SWODY3
SPC AC 310533
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1233 AM CDT MON OCT 31 2011
VALID 021200Z - 031200Z
...SYNOPSIS AND DISCUSSION...
A PROGRESSIVE AND AMPLIFIED UPPER AIR PATTERN WILL PERSIST ON
WED...WITH ONE STRONG TROUGH MOVING ACROSS THE CNTRL PLAINS INTO THE
MS/OH VALLEY...AND ANOTHER ONE MOVING INTO THE PACIFIC NW BY THU
MORNING.
THE PRESENCE OF HIGH PRESSURE OVER THE ERN U.S. WILL MAKE FOR POOR
RETURN MOISTURE FLOW TRAJECTORIES AHEAD OF THE FIRST TROUGH. STRONG
LIFT WILL EXIST ALONG A COLD FRONT AS IT PROGRESSES TO A CNTRL TX TO
CNTRL IL LINE BY 00Z. FORECAST SOUNDINGS SHOW VERY LITTLE IN THE WAY
OF INSTABILITY...BUT HIGHLY ELEVATED CONVECTION MAY OCCUR OVER ERN
KS...NERN OK...AND INTO WRN MO WITH NO SEVERE THREAT. THIS WILL
LIKELY OCCUR EARLY IN THE DAY.
TO THE W...A STRONG COLD FRONT WILL APPROACH THE WA/ORE AND NRN CA
COASTS FROM N TO S AFTER 00Z. INSTABILITY WILL ALSO BE VERY WEAK
HERE...WITH ANY LIGHTNING STRIKES LIKELY TO REMAIN OFFSHORE.
..JEWELL.. 10/31/2011
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