SWODY1
SPC AC 271606
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1006 AM CST FRI NOV 27 2009
VALID 271630Z - 281200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
STRONG LARGE SCALE ASCENT ASSOCIATED WITH NEGATIVE TILT TROUGH
LIFTING THROUGH NEW ENGLAND COMBINED WITH PRONOUNCED 850-700 MB
THERMAL GRADIENT/WAA ORIENTED ALONG THE MA-ME COAST IS EXPECTED TO
FOCUS SHOWER DEVELOPMENT THROUGH THE AFTERNOON AND EVENING. STEEP
MID LEVEL LAPSE RATES COMBINED WITH MOIST ONSHORE FLOW MAY ALSO AID
IN THE OCCURRENCE OF A FEW EMBEDDED LIGHTNING STRIKES. OTHERWISE...A
COLD UPPER TROUGH IS FORECAST TO MOVE EWD ACROSS THE SACRAMENTO
VALLEY OF CA...WHICH WILL AID IN STEEPENING LOW-MID LEVEL LAPSE
RATES AND RESULT IN THE POTENTIAL FOR ISOLATED THUNDERSTORM
DEVELOPMENT.
..GARNER/THOMPSON.. 11/27/2009
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