FNUS75 KRIW 161417
FWSRIW

SPOT FORECAST FOR WEST SLOPE BIG HORNS RX...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
817 AM MDT FRI APR 16 2010

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON APRIL 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE WILL MOVE ACROSS CENTRAL WYOMING TODAY
WITH LIGHT TERRAIN DRIVEN WIND AND DRY WEATHER EXPECTED. HIGH
CLOUDS WILL MOVE ACROSS THE AREA TONIGHT...AS A WEAK LOW
PRESSURE AREA MOVES ACROSS NORTHWESTERN WYOMING. AS THE LOW
PRESSURE SYSTEM MOVES ACROSS CENTRAL AND EASTERN WYOMING
SATURDAY...A FEW SHOWERS AND POSSIBLY A THUNDERSTORM WILL
DEVELOP. THE CHANCE OF WETTING RAIN WILL BE LOW HOWEVER...
WITH ONLY A FEW HUNDREDTHS OF AN INCH EXPECTED.

...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS...
...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

FORECASTER...SMITH

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-15 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (25-35 PERCENT).
MAX TEMPERATURE.....50-53.
MIN HUMIDITY........30-33 PERCENT.
WIND (20 FT)........UPSLOPE/ UP VALLEY 5-9 MPH...BECOMING SOUTH 8-12 MPH AFTER
                    1400 LDT.
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL INCREASING TO 4500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 15 TO 18 MPH.
SMOKE DISPERSAL.....FAIR (58400 KNOT-FT) INCREASING TO GOOD (93600
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT).
MIN TEMPERATURE.....34-37.
MAX HUMIDITY........77-80 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWN VALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTH 8-12 MPH.
LAL.................1
CWR.................MISSING.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....SOUTH 8-12 MPH.
SMOKE DISPERSAL.....POOR (29800 KNOT-FT).

.SATURDAY...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). ISOLATED RAIN
                    SHOWERS IN THE MORNING...THEN ISOLATED RAIN
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON AFTER
                    1600 LDT.
MAX TEMPERATURE.....53-56.
MIN HUMIDITY........32-35 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH.
LAL.................1...THEN 2 AFTER 1600 LDT.
CWR.................5.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 6000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....UPSLOPE 4-7...THEN SOUTHWEST 9-12 MPH AFTER 1200
                    LDT.
SMOKE DISPERSAL.....POOR (24400 KNOT-FT)...THEN FAIR (48600 KNOT-FT) AFTER
                    1200 LDT .

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.
WINDS GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE UPPER 30S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN
10 MPH.
.TUESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE
UPPER 30S. HIGHS AROUND 60. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...SMITH
REQUESTED BY...SAGE DECKER
REASON FOR REQUEST...PRESCRIBED
.TAG 20100416.WESTS.01/RIW