SWODY2
SPC AC 191719
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1119 AM CST SAT DEC 19 2009
VALID 201200Z - 211200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
SOME DEAMPLIFICATION OF THE UPPER PATTERN IS FORECAST ACROSS MUCH OF
THE U.S. THIS PERIOD...WITH THE PRIMARY ERN UPPER FEATURE AND
ASSOCIATED SURFACE LOW FORECAST TO SKIRT NEW ENGLAND AND MOVE INTO
THE NORTHWEST ATLANTIC/CANADIAN MARITIMES REGION.
MEANWHILE...RIDGING OVER THE ROCKIES WILL PREVAIL...RESULTING IN
WEAKENING OF THE SHORTWAVE TROUGH MOVING ONSHORE/ACROSS THE WRN
CONUS.
WITH THE LARGE ERN U.S. COLD FRONT WELL INTO THE ATLANTIC AND HAVING
PUSHED S THROUGH THE GULF OF MEXICO...COOL/STABLE CONTINENTAL
AIRMASS WILL RESIDE ACROSS MOST OF THE COUNTRY. THOUGH SHOWERS WILL
BE POSSIBLE ACROSS PARTS OF THE WEST AS THE WEAKENING TROUGH MOVES
ONSHORE...APPRECIABLE THUNDER POTENTIAL IS NOT EXPECTED HERE -- OR
ACROSS THE REST OF THE CONUS.
..GOSS.. 12/19/2009
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