SWODY2
SPC AC 011631
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1131 AM CDT WED OCT 01 2008
VALID 021200Z - 031200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
LARGE SCALE PATTERN WILL BECOME INCREASINGLY HOSTILE FOR MOIST DEEP
CONVECTION OVER THE NEXT FEW DAYS AS REPETITIVE FRONTAL INTRUSIONS
INTO THE LOWER 48 WILL ENSURE A PRIMARILY DRY OFFSHORE FLOW REGIME.
EVEN SO...A FEW AREAS WILL EXPERIENCE ISOLATED
THUNDERSTORMS...NAMELY PORTIONS OF THE NRN GREAT LAKES...CNTRL HIGH
PLAINS AND ACROSS THE NWRN U.S.
COOLING PROFILES WITHIN DEEP CYCLONIC FLOW REGIME WILL STEEPEN LAPSE
RATES ACROSS THE WARMER WATERS OF THE GREAT LAKES...ESPECIALLY THE
NRN LAKES. A FEW DEEPER CLOUD ELEMENTS MAY PRODUCE LIGHTNING.
STRONG HEATING BENEATH UPPER RIDGE WILL ALLOW BOUNDARY LAYER TO
DEEPEN ACROSS THE CNTRL HIGH PLAINS INTO THE MOUNTAINS OF CO AND NM.
DESPITE RELATIVELY DRY AIRMASS OVER THIS REGION...HIGH BASED
CONVECTION MAY DEVELOP. ANY STORMS THAT DEVELOP SHOULD DO SO WITHIN
WEAK WARM ADVECTION ENVIRONMENT THAT MAY ALLOW FOR A FEW STORMS TO
LINGER INTO THE EVENING HOURS.
ANOTHER REGION THAT MAY EXPERIENCE A FEW THUNDERSTORMS WILL BE
ACROSS THE NRN ROCKIES IMMEDIATELY AHEAD OF UPPER TROUGH.
AGAIN...THIS REGION IS EXPECTED TO REMAIN SOMEWHAT DRY AND ANY
STORMS THAT DEVELOP WILL BE HIGH BASED AND INEFFICIENT RAIN
PRODUCERS.
LATE IN THE PERIOD...WARM ADVECTION WILL BEGIN TO FORCE MOISTURE NWD
ACROSS THE FL STRAITS. A FEW THUNDERSTORMS MAY APPROACH THE SRN FL
PENINSULA LATE IN THE PERIOD...BUT MOST OF THIS ACTIVITY SHOULD
REMAIN OFFSHORE.
..DARROW.. 10/01/2008
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