SWODY2
SPC AC 241633
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1033 AM CST SAT JAN 24 2009
VALID 251200Z - 261200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
HEIGHT FALLS ASSOCIATED WITH MID AND HIGH-LEVEL JET STREAKS DIGGING
SWD ALONG THE PACIFIC COAST WILL SERVE TO AMPLIFY POSITIVELY-TILTED
TROUGH OVER THE WRN STATES. DOWNSTREAM...A WEAKLY CYCLONIC FLOW
REGIME WILL EXIST FROM THE MS VALLEY TO ATLANTIC COAST. IN THE LOW
LEVELS...PRIMARY SURFACE LOW WILL BE MAINTAINED OVER UT WITH A WEAK
COLD FRONT SAGGING SWD THROUGH PARTS OF NV/CA. FARTHER E...A
BAROCLINIC ZONE WILL EXTEND SEWD FROM THIS SURFACE LOW THROUGH THE
SRN HIGH PLAINS INTO LOWER MS VALLEY.
...CA/NV/UT...
RATHER COLD MIDLEVEL TEMPERATURES /I.E. -28 TO -30 C AT 500 MB/
ASSOCIATED WITH INTENSIFYING UPPER TROUGH WILL LARGELY CONTRIBUTE TO
THE DEVELOPMENT OF STEEP LAPSE RATES AND RESULTANT POCKETS OF WEAK
CONVECTIVE INSTABILITY WITH MUCAPE AOB 100-200 J/KG. LARGE-SCALE
FORCING ATTENDANT TO INTENSIFYING TROUGH COUPLED WITH FRONTAL
CONVERGENCE AND TERRAIN EFFECTS MAY BE SUFFICIENT TO SUPPORT
SPORADIC TSTM DEVELOPMENT FROM SUNDAY AFTERNOON INTO THE NIGHTTIME
HOURS...PRIMARILY OVER PARTS OF WRN UT INTO NV.
..MEAD.. 01/24/2009
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