SPC AC 261615
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1015 AM CST FRI NOV 26 2010
VALID 261630Z - 271200Z
...NO TSTM AREAS FORECAST...
...SERN CONUS...
SURFACE COLD FRONT ANALYZED FROM THE NC COASTAL PLAIN SWWD INTO THE
WRN FL PNHDL AS OF 15Z WILL PROGRESS EWD/SEWD THROUGH THE DAY ONE
PERIOD IN ADVANCE OF POSITIVELY-TILTED MIDLEVEL TROUGH CURRENTLY
EXTENDING FROM DEEP-LAYER CYCLONE OVER ONTARIO SWWD INTO THE SRN
PLAINS. AIR MASS IN ADVANCE OF COLD FRONT IS RELATIVELY WARM AND
MOIST...WITH DEW POINTS IN THE 60S AND TEMPERATURES LIKELY WARMING
INTO THE 80S. HOWEVER...12Z OBSERVED AND FORECAST SOUNDING DATA
INDICATE THAT MIDLEVEL LAPSE RATES WILL REMAIN QUITE
POOR...EFFECTIVELY LIMITING THE DEPTH OF CONVECTIVE DEVELOPMENT AND
POTENTIAL FOR CHARGE SEPARATION/LIGHTNING FORMATION. WHILE A FEW
LIGHTNING STRIKES WILL BE POSSIBLE OVER NRN FL/SRN GA TODAY...
EXPECTED COVERAGE APPEARS TOO LIMITED TO WARRANT INCLUSION OF A
GENERAL TSTM AREA.
...PACIFIC NW COAST...
POTENT SHORT WAVE TROUGH CURRENTLY CENTERED NEAR 133W/48N WILL
CONTINUE ESEWD...SUPPORTING AN INCREASE IN HEIGHT FALLS/DYNAMIC
FORCING FOR ASCENT THROUGH THE PERIOD. SPORADIC LIGHTNING ACTIVITY
IS EXPECTED TO REMAIN CONFINED TO COLD CORE OF MIDLEVEL TROUGH WHICH
WILL LIKELY REMAIN OFFSHORE THROUGH 27/12Z.
..MEAD.. 11/26/2010
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z
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