FNUS75 KCYS 052226 FWSCYS SPOT FORECAST FOR DEEP CREEK...BLM-HIGH DESERT DISTRICT NATIONAL WEATHER SERVICE CHEYENNE WY 426 PM MDT SUN SEP 5 2010 FORECAST IS BASED ON REQUEST TIME OF 1611 MDT ON SEPTEMBER 05. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE ACROSS THE DISTRICT THROUGH THE EARLY EVENING HOURS AS SINGLE DIGIT HUMIDITY VALUES COMBINE WITH UNSEASONABLY WARM TEMPERATURES. WEST TO SOUTHWEST WINDS CONTINUE TO BE STRONG...WITH GUSTS TO 35 TO 45 MPH COMMON. SUCH DRY CONDITIONS WILL DELAY RECOVERY THIS EVENING...SO EXPECT THESE CRITICAL CONDITIONS TO PERSIST UNTIL 7 PM. A COLD FRONT WILL DROP FROM NORTH TO SOUTH THROUGH THE DISTRICT THIS EVENING THROUGH EARLY MONDAY MORNING...TURNING WINDS NORTHERLY AND DECREASING TEMPERATURES. IN FACT...TEMPERATURES WILL ONLY CLIMB INTO THE 60S IN LOWER ELEVATIONS ON MONDAY. EXPECT THE POSSIBILITY OF SOME ISOLATED DRY LIGHTNING IN THE EARLY EVENING NEAR THE VICINITY OF THE FRONT. MONDAY WILL YIELD SEASONABLY COOL AND BLUSTERY CONDITIONS WITH WIND GUSTS OF 30 TO 40 MPH...ESPECIALLY IN THE MORNING HOURS. THE DRY AIR MASS WILL RETURN TO THE DISTRICT LATE MONDAY THROUGH TUESDAY AS HIGH PRESSURE SETTLES IN. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED RAIN SHOWERS AFTER MIDNIGHT. TEMPERATURE.........MIN 38. RH..................MAX 52 PERCENT. WIND (20 FT)........WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH DECREASING TO 12 TO 15 MPH AFTER MIDNIGHT. CWR.................10 PERCENT INCREASING TO 20 PERCENT AFTER MIDNIGHT. LAL.................1. HAINES INDEX........4 TO 6 OR LOW TO HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6500 FT AGL DECREASING TO 1600 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST 22 TO 31 MPH DECREASING TO 17 TO 20 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....EXCELLENT (136400-175300 KNOT-FT) DECREASING TO FAIR (24200-25800 KNOT-FT). TIME (MDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........51 51 51 49 49 49 WEATHER COV..... ISOLTD ISOLTD ISOLTD WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TEMP............75 62 53 47 43 41 RH..............13 24 35 44 47 47 20 FT WIND......W 23 W 20 NW 17 W 15 W 14 W 14 20 FT WIND GUST.40 40 25 20 20 20 HAINES INDEX....6 6 6 4 4 4 .LABOR DAY... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY SUNNY (25-35 PERCENT). TEMPERATURE.........MAX 56. RH..................MIN 20 PERCENT. WIND (20 FT)........WEST WINDS 12 TO 15 MPH WITH HIGHER GUSTS. CWR.................10 PERCENT. LAL.................1. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4400 FT AGL INCREASING TO 7300 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 17 TO 20 MPH. SMOKE DISPERSAL.....GOOD TO EXCELLENT (66600-116300 KNOT-FT). TIME (MDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........36 36 36 29 29 29 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............38 41 46 52 53 56 RH..............47 51 44 32 26 21 20 FT WIND......W 14 W 14 W 14 W 14 W 13 W 12 20 FT WIND GUST.20 20 25 20 20 20 HAINES INDEX....3 3 3 3 3 3 $$ FORECASTER...LUNDQUIST/JAMSKI REQUESTED BY...MIKE BARAJAS TYPE OF REQUEST...WILDFIRE .TAG 20100905.DEEPC.01/CYS