FNUS75 KSLC 191538 FWSSLC SPOT FORECAST FOR AHLSTROM HOLLOW RX NATIONAL WEATHER SERVICE SALT LAKE CITY UT 937 AM MDT WED MAY 19 2010 .DISCUSSION...HIGH PRESSURE ALOFT WILL STRENGTHEN ACROSS SOUTHERN UTAH TODAY. RESIDUAL MOISTURE WILL LEAD TO BUILDUPS OVER THE SURROUNDING HIGHER TERRAIN...WITH NO WETTING RAINS EXPECTED THIS AFTERNOON. RAPID CLEARING WILL FOLLOW THIS EVENING. A WEAK COLD FRONT WILL APPROACH NORTHERN UTAH THURSDAY. THIS FRONT WILL BRING IN DRIER AIR AND INCREASINGLY STRONG SOUTHWEST WINDS ACROSS SOUTHERN UTAH THURSDAY. THE FRONT WILL REMAIN NORTH OF THE FIRE SITE THURSDAY EVENING...THEN RETREAT NORTH ON FRIDAY. THE NEXT PACIFIC STORM SYSTEM WILL REACH THE WEST COAST FRIDAY. STRONG SOUTHWEST WINDS AND LOW RH VALUES WILL DEVELOP AHEAD OF THIS TROUGH FOR FRIDAY AND SATURDAY. INCREASING MOISTURE SUNDAY COULD RESULT IN HIGH-BASED THUNDERSTORMS OVER/NEAR THE SITE SUNDAY AFTERNOON. .TODAY... LAL...................1. HAINES INDEX..........3 ..VERY LOW. CLEARING INDEX........950. SKY/WEATHER...........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER). MAX TEMPERATURE.......57-59. MIN HUMIDITY..........36-39 PERCENT. WIND (20 FT)..........NORTHWEST WINDS 14 TO 18 MPH...GUSTS TO 25 MPH. .TONIGHT... LAL...................1. HAINES INDEX..........3 ..VERY LOW. SKY/WEATHER...........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER). MIN TEMPERATURE.......28-31. MAX HUMIDITY..........84-87 PERCENT. WIND (20 FT)..........NORTHWEST WINDS 20 MPH DECREASING TO NORTH WINDS 5 TO 10 MPH AFTER 2300. .OUTLOOK FOR THURSDAY... LAL...................1. HAINES INDEX..........5 ..MODERATE. CLEARING INDEX........1000+. SKY/WEATHER...........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER). MAX TEMPERATURE.......66-68. MIN HUMIDITY..........19-22 PERCENT. WIND (20 FT)..........NORTH WINDS 5 TO 10 MPH...BECOMING WEST 8 TO 12 MPH AFTER 0900. WINDS BECOMING SOUTHWEST 15 TO 25 MPH AFTER 1400. FORECASTER...CONGER REQUESTED BY...Gregg Christensen REASON FOR REQUEST...PRESCRIBED .TAG 20100519.AHLST.01/SLC $$