FNUS75 KCYS 132323 FWSCYS SPOT FORECAST FOR SLIM BUTTES...CHADRON FD NATIONAL WEATHER SERVICE CHEYENNE WY 523 PM MDT FRI AUG 13 2010 FORECAST IS BASED ON REQUEST TIME OF 1713 MDT ON AUGUST 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...ANOTHER COLD FRONT WILL MOVE ACROSS THE DISTRICT TONIGHT. BEHIND THE FRONT WILL BE COOLER TEMPERATURES FOR THE WEEKEND AND HIGHER RELATIVE HUMIDITY VALUES. ALSO...NORTHERLY SURFACE WINDS WILL GUST AS HIGH AS 30 MPH BEHIND THE FRONT LATER TONIGHT AND FOR MUCH OF SATURDAY. THERE WILL BE ISOLATED SHOWERS OVER THE NORTH PART OF THE DISTRICT LATE TONIGHT AND SATURDAY MORNING. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING MOSTLY CLOUDY (60-70 PERCENT). ISOLATED RAIN SHOWERS AFTER MIDNIGHT. TEMPERATURE.........85 AT REQUEST...MIN 52. MIN HUMIDITY........25 PERCENT AT REQUEST...MAX 89 PERCENT. WIND (20 FT)........NORTHWEST WINDS 9 TO 10 MPH SHIFTING TO THE EAST AROUND 8 MPH EARLY IN THE EVENING...THEN SHIFTING TO THE NORTH 9 TO 11 MPH LATE IN THE EVENING. CWR.................10 PERCENT INCREASING TO 20 PERCENT AFTER MIDNIGHT. LAL.................1. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT REQUEST...MAX 3. MIXING HEIGHT.......3400 FT AGL DECREASING TO 200 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....NORTHWEST 14 TO 15 MPH SHIFTING TO THE EAST AROUND 13 MPH EARLY IN THE EVENING...THEN SHIFTING TO THE NORTH 14 TO 16 MPH LATE IN THE EVENING. TIME (MDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........45 45 45 65 65 65 WEATHER COV..... ISOLTD ISOLTD ISOLTD WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TEMP............85 74 66 62 59 55 RH..............25 37 50 60 69 80 20 FT WIND......NW 8 E 6 E 6 N 8 N 9 N 9 20 FT WIND GUST.15 15 15 15 20 20 HAINES INDEX....2 2 2 3 3 3 $$ FORECASTER...JAMSKI REQUESTED BY...PAT GOULD TYPE OF REQUEST...WILDFIRE .TAG 20100813.SLIMB.01/CYS