Expires:201209072230;;168621
FPUS55 KCYS 070946
ZFPCYS
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA
NATIONAL WEATHER SERVICE CHEYENNE WY
346 AM MDT FRI SEP 7 2012
.DISCUSSION...NO FIRE WEATHER CONCERNS TODAY WITH INCREASED 
RELATIVE HUMIDITIES. ON SATURDAY...HUMIDITIES WILL APPROACH CRITICAL 
VALUES. FIRE WEATHER CONCERNS WILL INCREASE SUNDAY AND MONDAY AS A 
RIDGE ALOFT PREVAILS AND WINDS INCREASE IN THE AFTERNOONS. 

NEZ312-072230-
BOX BUTTE/SOUTH SIOUX-
346 AM MDT FRI SEP 7 2012
.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200...THEN PARTLY CLOUDY. 
                    ISOLATED SHOWERS UNTIL 1200. 
MAX TEMPERATURE.....68-73. 
   24 HR TREND......18 DEGREES COOLER. 
MIN HUMIDITY........30-36 PERCENT. 
   24 HR TREND......24 PERCENT WETTER. 
20-FOOT WINDS.......NORTH 10 TO 15 MPH WITH HIGHER GUSTS. 
LAL.................1. 
CHC OF WETTING RAIN.5 PERCENT. 
TRANSPORT WINDS.....NORTH 15 TO 20 MPH. 
MIXING HEIGHT.......6300-8300 FT AGL. 
SMOKE DISPERSAL.....GOOD TO VERY GOOD (93800-137200 KNOT-FT). 
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME 
                    DOMINATED FIRE GROWTH. 
.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR. 
MIN TEMPERATURE.....40-45. 
   24 HR TREND......6 DEGREES COOLER. 
MAX HUMIDITY........80-86 PERCENT. 
   24 HR TREND......14 PERCENT DRIER. 
HUMIDITY RECOVERY...GOOD. 
20-FOOT WINDS.......NORTH 10 TO 15 MPH AND GUSTY SHIFTING TO THE 
                    NORTHWEST AFTER MIDNIGHT. 
LAL.................1. 
CHC OF WETTING RAIN.ZERO PERCENT. 
TRANSPORT WINDS.....NORTH 10 TO 15 MPH. 
MIXING HEIGHT.......3700-4300 FT AGL DECREASING TO 200 FT AGL AFTER 
                    MIDNIGHT. 
SMOKE DISPERSAL.....POOR TO FAIR (1700-45400 KNOT-FT). 
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME 
                    DOMINATED FIRE GROWTH. 
.SATURDAY...
SKY/WEATHER.........SUNNY. 
MAX TEMPERATURE.....75-80. 
   24 HR TREND......7 DEGREES WARMER. 
MIN HUMIDITY........16-22 PERCENT. 
   24 HR TREND......11 PERCENT DRIER. 
20-FOOT WINDS.......NORTHWEST 10 TO 15 MPH WITH HIGHER GUSTS. 
LAL.................1. 
CHC OF WETTING RAIN.ZERO PERCENT. 
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH. 
MIXING HEIGHT.......2800 FT AGL INCREASING TO 5400-5900 FT AGL IN 
                    THE AFTERNOON. 
SMOKE DISPERSAL.....POOR TO GOOD (31500-64200 KNOT-FT). 
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED 
                    FIRE GROWTH. 
.FORECAST DAYS 3 THROUGH 7...
.SUNDAY...CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 80S.
SOUTH WINDS AROUND 10 MPH. 
.MONDAY...CLEAR. LOWS IN THE MID 50S. HIGHS AROUND 90. SOUTHWEST
WINDS AROUND 10 MPH. 
.TUESDAY...PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE
LOWER 80S. WEST WINDS AROUND 10 MPH. 
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 70S. 
.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
70S. 
$$