FNUS76 KSTO 160505 FWSSTO SPOT FORECAST FOR IRON TRAP RX NATIONAL WEATHER SERVICE SACRAMENTO CA 1005 PM PDT FRI OCT 15 2010 IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE. SPOT FORECAST FOR IRON TRAP RX...USFS, ELDORADO NF NATIONAL WEATHER SERVICE SACRAMENTO CA 1001 PM PDT FRI OCT 15 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON OCTOBER 16. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER LEVEL LOW PRESSURE SYSTEM APPROACHING FROM THE WEST WILL BRING HIGH CLOUDS AND A LITTLE COOLING TODAY WITH SOME INCREASE IN RH BUT ALSO AN INCREASE IN WINDS FROM FRIDAY. AS THE SYSTEM MOVES ONTO THE COAST ON SUNDAY IT WILL BRING MORE COOLING AND A THREAT OF SHOWERS POSSIBLY AS EARLY AS SUNDAY MORNING. IN ADDITION TO COOLING AND HIGHER RH...RIDGETOPS IN THIS AREA WILL SEE A TRANSITION TO MORE SOUTHERLY WINDS ON SUNDAY. A SLIGHT THREAT OF SHOWERS CONTINUES ON MONDAY BUT BY TUESDAY THE WEATHER SYSTEM WILL HAVE MOVED SOUTHWARD FAR ENOUGH TO END SHOWER THREAT. A RETURN TO DRY CONDITIONS AND NEAR NORMAL TEMPERATURES ARE EXPECTED ON TUESDAY AND WEDNESDAY. .TODAY (SATURDAY)... SKY/WEATHER.........MOSTLY SUNNY WITH HIGH CLOUDS. MAX TEMPERATURE.....66-71. MIN HUMIDITY........22-27 PERCENT. WIND (20 FT)........ SLOPE/VALLEY.....NORTHEAST WINDS 1 TO 4 MPH SHIFTING TO THE SOUTHWEST AFTER ABOUT 1000 TO 3 TO 5 MPH WITH GUSTS UP TO 12 MPH IN THE AFTERNOON. RIDGETOP.........SOUTH WINDS 1-5 MPH TURNING TO SOUTHWEST 3-6 WITH GUSTS 12-14 MPH IN THE AFTERNOON. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......INCREASING TO 8000-9000 FT AGL LATE IN THE MORNING AND IN THE AFTERNOON. MIXING WINDS........SOUTHWEST 10-15 MPH. .TONIGHT... SKY/WEATHER.........INCREASING CLOUDS. MIN TEMPERATURE.....45-50. MAX HUMIDITY........79-84 PERCENT. WIND (20 FT)........ SLOPE/VALLEY.....SOUTHEAST TO EAST WINDS 2 TO 6 MPH AFTER SUNSET. RIDGETOP.........BECOMING SOUTH TO SOUTHEAST 2-5 GUSTS TO 7 MPH. CWR.................NEAR 0 PERCENT. LAL.................1. MIXING HEIGHT.......DECREASING TO BELOW 500 FEET BY EARLY IN THE EVENING. MIXING WINDS........SOUTH TO SOUTHEAST 4-8 MPH. .SUNDAY... SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS. MAX TEMPERATURE.....55-60. MIN HUMIDITY........53-58 PERCENT. WIND (20 FT)........ SLOPE/VALLEY.....SHIFTING TO THE SOUTH TO SOUTHWEST 3-6 MPH WITH GUSTS TO 12 MPH IN THE AFTERNOON. RIDGETOP.........SOUTH 3-6 GUSTS TO 14 MPH. CWR.................50 PERCENT. LAL.................1. MIXING HEIGHT.......INCREASING TO 4000 TO 5000 FEET BY LATE MORNING. MIXING WINDS........SOUTH 5-15 MPH. MONDAY...PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS 58-63. GENERAL WINDS SOUTHEAST 5-15 MPH. TUESDAY...MOSTLY SUNNY. HIGHS 60-65. GENERAL WINDS SOUTHEAST 5-10 MPH. WEDNESDAY...MOSTLY SUNNY. HIGHS 60-65. GENERAL WINDS NORTHEAST TO 10 MPH. FORECASTER...SMITH REQUESTED BY...AMY REID REASON FOR REQUEST...PRESCRIBED $$ REQUESTED BY...AMY REID REASON FOR REQUEST...UNDER THE INTERAGENCY AGREEMENT FOR METEOROLOGICAL SERVICES (USFS, BLM, NPS, U