SWODY2
SPC AC 260541
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1141 PM CST FRI JAN 25 2008
VALID 271200Z - 281200Z
..NO SVR TSTM AREAS FORECAST...
..CSTL SRN CA...
COMPLEX UPR LOW SEVERAL HUNDRED MILES W OF CNTRL CA WILL EJECT ENEWD
THIS WEEKEND...REACHING THE CNTRL/SRN CA CST SUNDAY AFTN. SVRL
BANDS OF CONVECTION WILL AFFECT CNTRL/SRN CA AS THIS SYSTEM APCHS.
BY SUNDAY AFTN...A TONGUE OF LOW-MID 50S SFC DEW POINTS WILL ADVECT
NWD JUST AHEAD OF THE PRIMARY IMPULSE. STEEPENING LAPSE RATES IN
THE MID-TROPOSPHERE /H5 MINUS 25 DEG C/ ATOP THIS MOISTURE AND
STRONG ASCENT ALONG THE CYCLONIC SIDE OF A 110+ KT MID-LVL JET WILL
CONTRIBUTE TO THE POTENTIAL FOR STG TSTMS SUNDAY AFTN/EVE. MLCAPES
WILL APCH 250-500 J/KG WITH EFFECTIVE DEEP LAYER SHEAR IN EXCESS OF
40 KTS...ENHANCING RISKS FOR ISOLD LOW-TOPPED SUPERCELLS WITH LARGE
HAIL AND PERHAPS WATERSPOUTS/TORNADOES. AT THIS POINT IN TIME...LOW
SVR PROBABILITIES HAVE BEEN INTRODUCED WITH LATER OTLKS ADDRESSING A
PSBL UPGRADE TO SLGT CATEGORICAL RISK PENDING MORE EXACT TIMING OF
THE UPR SYSTEM.
..PAC NW...
NRN STREAM SERN AK PNHDL SHORTWAVE TROUGH IS EXPECTED TO DIG SEWD
INTO THE PAC NW/INTERMOUNTAIN REGION SUNDAY AND SUNDAY NIGHT. H5
TEMPERATURES LESS THAN MINUS 35 DEG C WILL CONTRIBUTE TO A
DESTABILIZING COLUMN OVER PARTS OF THE PAC NW. HIGHEST TSTM
POTENTIAL WILL EXIST ALONG/W OF THE CSTL RANGES IN WA/ORE WHERE A
MOIST WLY UPSLOPE COMPONENT BOOSTS UVV. ISOLD STORMS MAY CONTAIN
SMALL HAIL.
.RACY.. 01/26/2008
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