ACUS02 KWNS 070431
SWODY2
SPC AC 070430
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1130 PM CDT SAT OCT 06 2012
VALID 081200Z - 091200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
IT STILL APPEARS THAT THE EASTERN PACIFIC BLOCKING PATTERN MAY BEGIN
TO WEAKEN DURING THIS FORECAST PERIOD. AS THIS OCCURS...A CLOSED
LOW MAY SLOWLY TURN EASTWARD INTO CENTRAL CALIFORNIA COASTAL AREAS.
BUT LITTLE CHANGE IS ANTICIPATED DOWNSTREAM... WITH AMPLIFIED
LARGE-SCALE UPPER TROUGHING PERSISTING WITHIN CONFLUENT BELTS OF
WESTERLIES EAST OF THE ROCKIES THROUGH THE ATLANTIC SEABOARD.
WITHIN THE MORE PROMINENT NORTHERN STREAM...A STRONG SHORT WAVE
TROUGH IS FORECAST TO DIG INTO THE CENTRAL CANADIAN/U.S. BORDER AREA
MONDAY...WITH A SIGNIFICANT SURFACE CYCLONE MIGRATING FROM MANITOBA
INTO QUEBEC...AND ANOTHER COLD FRONT SURGING SOUTHWARD THROUGH THE
NORTHERN PLAINS. HOWEVER...MOISTURE RETURN IN THE WAKE OF A
PREVIOUS FRONT...LIKELY STALLING AND WEAKENING OFF THE SOUTH
ATLANTIC COAST INTO THE EASTERN GULF OF MEXICO...IS NOT EXPECTED TO
BECOME SUFFICIENT TO SUPPORT AN APPRECIABLE INCREASE IN CONVECTIVE
POTENTIAL. AND...IN FACT...ASIDE FROM PARTS OF THE FLORIDA
PENINSULA...THE RISK FOR THUNDERSTORM ACTIVITY ACROSS MUCH OF THE
NATION IS EXPECTED TO REMAIN LOW TO NEGLIGIBLE.
..KERR.. 10/07/2012
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