SWODY3
SPC AC 270609
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1209 AM CST TUE NOV 27 2007
VALID 291200Z - 301200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS AND FORECAST...
LARGE-SCALE PATTERN WILL BE CHARACTERIZED BY A BROAD...CYCLONIC FLOW
REGIME WITH EMBEDDED SHORT WAVE TROUGHS MOVING THROUGH THE NERN
STATES AND FROM THE PACIFIC NW INTO THE CNTRL ROCKIES. IN THE LOW
LEVELS...LARGE SURFACE HIGH OVER THE CNTRL AND SRN PLAINS WILL BUILD
EWD THROUGH THE PERIOD WITH LEE CYCLOGENESIS OCCURRING OVER THE
CNTRL HIGH PLAINS. THIS SURFACE LOW IS FORECAST TO DEVELOP
GENERALLY SEWD THROUGH THE LATTER HALF OF THE PERIOD ALONG COLD
FRONT SURGING OUT OF THE NRN HIGH PLAINS.
WITH THE EXCEPTION OF THE CNTRL/SRN FL PENINSULA AND DEEP S TX...AIR
MASS ACROSS THE CONUS WILL REMAIN QUITE DRY. SOME THUNDER WILL BE
POSSIBLE THROUGH THE PERIOD OFF THE COAST OF THE SERN FL PENINSULA.
ELSEWHERE...NO TSTM DEVELOPMENT IS EXPECTED.
.MEAD.. 11/27/2007
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