FNUS75 KSLC 142321 FWSSLC SPOT FORECAST FOR FRENCHMAN NATIONAL WEATHER SERVICE SALT LAKE CITY UT 421 PM MST TUE FEB 14 2012 .DISCUSSION...A STORM SYSTEM WILL EXIT THE REGION TONIGHT...WITH ANOTHER SYSTEM QUICKLY DROPPING INTO THE AREA FROM THE NORTH ON WEDNESDAY. THE BULK OF THIS SYSTEM WILL PASS WEST OF THE BURN AREA...HOWEVER THERE IS A SMALL CHANCE FOR AFTERNOON RAIN AND SNOW SHOWERS. DAYTIME MIXING COMBINED WITH THE FLOW ALOFT SHOULD BE SUFFICIENT TO PUSH CLEARING INDICES ABOVE 500 BY LATE MORNING. HIGH PRESSURE LOOKS TO BUILD INTO THE REGION THURSDAY...AND REMAIN IN PLACE THROUGH THE REMAINDER OF THE WEEK...RESULTING IN POOR VENTILATION WITH CLEARING INDICES REMAINING WELL BELOW 500 THROUGH FRIDAY. .TONIGHT... LAL.................1. HAINES INDEX........2 ..VERY LOW. SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER). A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS UNTIL 2300. MIN TEMPERATURE.....22-25. MAX HUMIDITY........95-98 PERCENT. WINDS - 20-FOOT.....NORTHWEST 2-5 MPH. .WEDNESDAY... LAL.................1. HAINES INDEX........3 ..VERY LOW. CLEARING INDEX......650. SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER) UNTIL 1100...THEN MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER). A 20 PERCENT CHANCE OF RAIN AND SNOW SHOWERS AFTER 1100. MAX TEMPERATURE.....46-49. MIN HUMIDITY........36-39 PERCENT. WINDS - 20-FOOT.....NORTHWEST 2-5 MPH BECOMING SOUTHEAST 3-7 MPH LATE MORNING THROUGH AFTERNOON. .OUTLOOK FOR THURSDAY... LAL.................1. HAINES INDEX........3 ..VERY LOW. CLEARING INDEX......160. SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT CLOUD COVER) THEN BECOMING MOSTLY SUNNY (10-20 PERCENT CLOUD COVER). MAX TEMPERATURE.....NEAR 50. MIN HUMIDITY........30-33 PERCENT. WINDS - 20-FOOT.....NORTHWEST 2-5 MPH IN THE MORNING BECOMING SOUTHEAST 2-5 MPH IN THE AFTERNOON. FORECASTER...SEAMAN REQUESTED BY...ZACK FARMER REASON FOR REQUEST...PRESCRIBED .TAG 20120215.FRENC.01/SLC $$