FNUS75 KSLC 211535 FWSSLC SPOT FORECAST FOR SANTA CLARA VEG PILES NATIONAL WEATHER SERVICE SALT LAKE CITY UT 835 AM MST WED JAN 21 2009 .DISCUSSION...HIGH PRESSURE WILL BEGIN SHIFTING EASTWARD TODAY AND TOMORROW. THIS WILL ALLOW A LIGHT SOUTHWESTERLY FLOW TO DEVELOP...BRINGING CLOUDS INTO THE AREA STARTING TODAY AND A CHANCE OF LIGHT PRECIPITATION BEGINNING THURSDAY...BUT CONDITIONS WILL REMAIN MOSTLY STABLE THROUGH THAT TIME. A WEAK WAVE MOVING THROUGH THE STATE ON FRIDAY WILL IMPROVE MIXING A LITTLE BIT...BUT THE IDEA OF CLEARING INDICES ABOVE 500 APPEARS TO BE MARGINAL AT BEST. CLEARING SHOULD BEGIN TO IMPROVE GREATLY ON SUNDAY AND CONTINUING INTO THE BEGINNING OF NEXT WEEK AS A DEEP LOW PRESSURE SYSTEM MOVES OVER THE WESTERN UNITED STATES. .TODAY... LAL.................1. HAINES INDEX........2 ..VERY LOW. CLEARING INDEX......330. SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER) UNTIL 1000...THEN MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER). MAX TEMPERATURE.....48-52. MIN HUMIDITY........17-20 PERCENT. WINDS - 20-FOOT.....LIGHT AND VARIABLE WINDS. .TONIGHT... LAL.................1. HAINES INDEX........2 ..VERY LOW. SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER). A CHANCE OF RAIN. MIN TEMPERATURE.....32-36. MAX HUMIDITY........78-82 PERCENT. WINDS - 20-FOOT.....SOUTH WINDS 10 MPH. .OUTLOOK FOR THURSDAY... LAL.................1. HAINES INDEX........2 ..VERY LOW. CLEARING INDEX......190. SKY/WEATHER.........MOSTLY CLOUDY (90-100 PERCENT CLOUD COVER). A CHANCE OF RAIN. MAX TEMPERATURE.....46-50. MIN HUMIDITY........32-37 PERCENT. WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH. FORECASTER...SCHOENING REQUESTED BY...SANDI IMLAY REASON FOR REQUEST...PRESCRIBED .TAG 20090121.SANTA.01/SLC $$