FNUS75 KLKN 131501 FWSLKN SPOT FORECAST FOR UPPER GLEASON RX...BLM NATIONAL WEATHER SERVICE ELKO NV 801 AM PDT THU AUG 13 2009 FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON AUGUST 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION..HIGH PRESSURE DRIFTS EAST AS AN UPPER LOW PRESSURE SYSTEM DROPS DOWN FROM THE PACIFIC NORTHWEST INTO NEVADA LATER TODAY THROUGH SATURDAY. TEMPERATURES WILL A FEW DEGREES WARMER TODAY...THEN A FEW DEGREES COOLER ON FRIDAY AND MUCH COOLER ON SATURDAY AS THE TROF CONTINUES TO MOVE SOUTH CLOSER TO THE SITE. WINDS WILL BE BREEZY FRIDAY WITH GUSTS NEAR 30 MPH IN THE AFTERNOON. AN ISOLATED DRY AFTERNOON THUNDERSTORM TODAY IS POSSIBLE AS THE AIRMASS IS SLIGHTLY UNSTABLE. LITTLE CHANGE IN RELATIVE HUMIDITIES THROUGH FRIDAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY THIS MORNING. PARTLY CLOUDY WITH AN ISOLATED DRY THUNDERSTORM POSSIBLE IN THE AFTERNOON. MAX TEMPERATURE.....81-84. MIN HUMIDITY........9-13%. 20-FOOT WINDS.......SOUTHEAST WINDS 3 TO 7 MPH INCREASING TO SOUTHWEST 14 TO 22 MPH IN THE AFTERNOON. GUSTS UP TO 25 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. MIXING HEIGHT.......19000 FEET MSL. TRANSPORT WINDS.....SOUTHWEST 13 TO 23 MPH. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. ISOLATED DRY THUNDERSTORMS IN THE EVENING. MIN TEMPERATURE.....46-54. MAX HUMIDITY........27-30%. 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 15 MPH. GUSTS UP TO 25 MPH IN THE EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE EVENING. .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY THIS MORNING. PARTLY CLOUDY WITH ISOLATED DRY THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....76-81. MIN HUMIDITY........9-12%. 20-FOOT WINDS.......SOUTHWEST WINDS 6 TO 11 MPH INCREASING TO 15 TO 25 MPH IN THE AFTERNOON. GUSTS NEAR 30 MPH IN THE AFTERNOON. MIXING HEIGHT.......19000 FT MSL. TRANSPORT WINDS.....SOUTHWEST 17 TO 27 MPH. $$ FORECASTER...HARMER REQUESTED BY...ROB FRISK TYPE OF REQUEST...PRESCRIBED .TAG 20090813.UPPER.01/LKN