SWODY2
SPC AC 251654
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1054 AM CST FRI JAN 25 2008
VALID 261200Z - 271200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
AMPLIFICATION TO LARGE-SCALE PATTERN IS FORECAST DURING THE DAY TWO
PERIOD. SHORT WAVE TROUGH INITIALLY FROM THE UPPER GREAT LAKES INTO
CNTRL PLAINS WILL INTENSIFY WHILE PROGRESSING EWD TOWARD THE
ATLANTIC COAST. MEANWHILE...UPSTREAM LOW OFF THE CA COAST WILL
BEGIN TO OPEN AND TRANSLATE EWD IN RESPONSE TO DIGGING SYSTEM OVER
BRITISH COLUMBIA.
..CNTRL GULF COAST...
A WEAK SURFACE LOW OVER THE N-CNTRL GULF OF MEXICO IS FORECAST TO
GRADUALLY DISSIPATE WHILE SHIFTING SEWD WITH ASSOCIATED COLD FRONT
EVENTUALLY PUSHING THROUGH THE FL PENINSULA. WSWLY LLJ LIKELY
ASSOCIATED WITH AMPLIFYING MIDLEVEL TROUGH E OF THE MS VALLEY IS
EXPECTED TO MAINTAIN A BELT OF MODEST WARM/MOIST ADVECTION TO THE N
OF WEAKENING SURFACE WAVE. MIDLEVEL LAPSE RATES WILL REMAIN QUITE
WEAK...HOWEVER THE WARMING/MOISTENING AROUND 850 MB APPEARS
SUFFICIENT TO SUPPORT WEAK ELEVATED INSTABILITY WITH THE POTENTIAL
FOR A FEW TSTMS EARLY IN THE PERIOD FROM SERN LA EWD ALONG THE MS/AL
COASTS.
..CA COAST...
DYNAMIC COOLING/HEIGHT FALLS ASSOCIATED WITH OPENING UPPER LOW ARE
EXPECTED TO SPREAD INLAND SATURDAY NIGHT...SUPPORTING STEEPENING
LAPSE RATES AND SOME WEAK CONVECTIVE INSTABILITY...MAINLY OVER THE
COASTAL WATERS. AS SUCH...THE POTENTIAL WILL EXIST FOR A FEW TSTMS
EMBEDDED WITH LARGER PRECIPITATION SHIELD EVOLVING WITHIN SYNOPTIC
SYSTEM WARM CONVEYOR BELT.
.MEAD.. 01/25/2008
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