SWODY2
SPC AC 130508
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1108 PM CST WED JAN 12 2011
VALID 141200Z - 151200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
SEVERAL DISTINCT BELTS OF STRONGER FLOW WILL COMPRISE THE UPPER FLOW
PATTERN ACROSS NORTH AMERICA THROUGH THIS FORECAST PERIOD. PERHAPS
CURRENTLY THE MOST PROMINENT OF THESE STREAMS WILL EMANATE FROM THE
MID LATITUDE WESTERN/CENTRAL PACIFIC...BEFORE CURVING
ANTICYCLONICALLY AROUND A BUILDING RIDGE OVER THE EASTERN PACIFIC
INTO THE WESTERN U.S...THEN BECOMING AT LEAST BROADLY CYCLONIC EAST
OF THE ROCKIES THROUGH THE WESTERN ATLANTIC.
ONE SIGNIFICANT SHORT WAVE IMPULSE EMBEDDED WITHIN THIS REGIME...AND
MIGRATING INTO THE NORTHERN PACIFIC COAST EARLY TODAY...IS PROGGED
TO SPLIT OFF THIS STREAM...GRADUALLY DIGGING MORE SHARPLY ACROSS THE
SOUTHERN ROCKIES INTO AREAS NEAR OR JUST WEST OF THE TEXAS BIG BEND
BY LATE FRIDAY NIGHT. AS THIS OCCURS...MID-LEVEL FLOW APPEARS
LIKELY TO BECOME MORE CONFLUENT ACROSS THE SOUTH CENTRAL PLAINS INTO
THE LOWER MISSISSIPPI VALLEY...TO THE NORTH AND EAST OF SHORT WAVE
RIDGING DEVELOPING ACROSS MUCH OF TEXAS.
THIS PROBABLY WILL CONFINE ANY APPRECIABLE LOW-LEVEL MOISTENING OFF
THE GULF OF MEXICO TO AREAS BENEATH STRONGER MID-LEVEL
INHIBITION...FROM THE LOWER RIO GRANDE VALLEY THROUGH CENTRAL AND
EASTERN TEXAS. ADDITIONALLY...WITH THE BOUNDARY LAYER OVER THE
NORTHERN GULF OF MEXICO SLOW TO MODIFY IN THE WAKE OF THE
SIGNIFICANT CURRENT COLD INTRUSION...GENERALLY STABLE CONDITIONS ARE
EXPECTED TO CONTINUE ACROSS THE SOUTH CENTRAL U.S...IN ADDITION TO
MUCH OF THE REST OF THE NATION. AS A RESULT... CONVECTIVE POTENTIAL
SHOULD REMAIN NEGLIGIBLE...OR NEARLY NEGLIGIBLE...THROUGH 12Z
SATURDAY AND BEYOND.
..KERR.. 01/13/2011
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