Expires:201209072230;;168610
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. 

WYZ301-072230-
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-
346 AM MDT FRI SEP 7 2012
.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200...THEN PARTLY CLOUDY. 
                    ISOLATED SHOWERS UNTIL 1200. 
MAX TEMPERATURE.....67-72. 
   24 HR TREND......10 DEGREES COOLER. 
MIN HUMIDITY........24-30 PERCENT. 
   24 HR TREND......12 PERCENT WETTER. 
20-FOOT WINDS.......NORTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND 35 
                    MPH. 
LAL.................1. 
CHC OF WETTING RAIN.ZERO PERCENT. 
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH. 
MIXING HEIGHT.......6100-8100 FT AGL. 
SMOKE DISPERSAL.....GOOD TO VERY GOOD (75300-124600 KNOT-FT). 
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME 
                    DOMINATED FIRE GROWTH. 
.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR. 
MIN TEMPERATURE.....42-47. 
   24 HR TREND......4 DEGREES COOLER. 
MAX HUMIDITY........65-71 PERCENT. 
   24 HR TREND......19 PERCENT DRIER. 
HUMIDITY RECOVERY...FAIR. 
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH SHIFTING TO THE 
                    SOUTHEAST AFTER MIDNIGHT. GUSTS UP TO 30 MPH. 
LAL.................1. 
CHC OF WETTING RAIN.ZERO PERCENT. 
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH SHIFTING TO THE 
                    SOUTHEAST AFTER MIDNIGHT. 
MIXING HEIGHT.......3800-4400 FT AGL DECREASING TO 300 FT AGL AFTER 
                    MIDNIGHT. 
SMOKE DISPERSAL.....POOR TO FAIR (2400-47600 KNOT-FT). 
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME 
                    DOMINATED FIRE GROWTH. 
.SATURDAY...
SKY/WEATHER.........SUNNY. 
MAX TEMPERATURE.....76-81. 
   24 HR TREND......9 DEGREES WARMER. 
MIN HUMIDITY........11-17 PERCENT. 
   24 HR TREND......12 PERCENT DRIER. 
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS. 
LAL.................1. 
CHC OF WETTING RAIN.ZERO PERCENT. 
TRANSPORT WINDS.....WEST AROUND 10 MPH. 
MIXING HEIGHT.......2600-3100 FT AGL INCREASING TO 5300-6000 FT AGL 
                    IN THE AFTERNOON. 
SMOKE DISPERSAL.....POOR TO FAIR (26700-54400 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...MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER
80S. SOUTHWEST WINDS AROUND 10 MPH. 
.TUESDAY...NOT AS WARM. PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID
70S. NORTHWEST WINDS AROUND 10 MPH. 
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. 
.THURSDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 70S. 
$$