FNUS75 KSLC 251501 FWSSLC SPOT FORECAST FOR MONVISO NATIONAL WEATHER SERVICE SALT LAKE CITY UT 801 AM MST WED NOV 25 2009 .DISCUSSION...HIGH PRESSURE WILL REMAIN OVER THE AREA TODAY AND THURSDAY...KEEPING CONDITIONS DRY AND STABLE. SOUTHWESTERLY FLOW ABOVE THE SURFACE WILL INCREASE SOMEWHAT ON FRIDAY AHEAD OF AN APPROACHING SYSTEM...THOUGH WINDS WILL NOT BE PARTICULARLY STRONG COMPARED TO PREFRONTAL WINDS IN SOME RECENT EVENTS. SURFACE WINDS AT THE BURN SITE ON FRIDAY WILL LIKELY BE SOUTHWESTERLY...WITH GUSTS NEAR 20 MPH POSSIBLE. CLEARING INDICES WILL BE MARGINAL...BUT CURRENTLY LOOK TO BE SLIGHTLY ABOVE 500 ON FRIDAY AT THE BURN SITE. THE PACIFIC TROUGH AND ASSOCIATED COLD FRONT ARE EXPECTED TO MOVE THROUGH NORTHERN UTAH SATURDAY MORNING...SWITCHING WINDS TO THE NORTHWEST FOR THE REST OF THE DAY AND CREATING A CHANCE OF SNOW. WITH GOOD MIXING DUE TO THIS SYSTEM...CLEARING INDICES ON SATURDAY COULD BE IN THE 750 TO 1000 RANGE. MORE CERTAIN AND DETAILED INFORMATION CAN BE OBTAINED CLOSER TO THE WEEKEND. .TODAY... LAL.................1. HAINES INDEX........2 ..VERY LOW. CLEARING INDEX......130. SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER). MAX TEMPERATURE.....40-42. MIN HUMIDITY........31-33 PERCENT. WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 3 TO 6 MPH. .TONIGHT... LAL.................1. HAINES INDEX........3 ..VERY LOW. SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER). MIN TEMPERATURE.....9-11. MAX HUMIDITY........96-100 PERCENT. WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH. .OUTLOOK FOR THURSDAY... LAL.................1. HAINES INDEX........4 ..LOW. CLEARING INDEX......100. SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER). MAX TEMPERATURE.....44-47. MIN HUMIDITY........26-29 PERCENT. WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 3 TO 6 MPH. FORECASTER...SCHOENING REQUESTED BY...JABLONSKI REASON FOR REQUEST...PRESCRIBED .TAG 20091127.MONVI.01/SLC $$