FNUS75 KRIW 111625
FWSRIW

SPOT FORECAST FOR HUNTER RANCH RX...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
1025 AM MDT MON MAY 11 2009

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON MAY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...BROAD WEST TO EAST FLOW TODAY WITH A WEAK
DISTURBANCE MOVING THROUGH MONTANA TODAY...INCREASING CLOUDINESS
IN THE AFTERNOON AND BRINGING SOME SHOWER ACTIVITY TO THE BURN
AREA LATE IN THE AFTERNOON AND IN THE EVENING HOURS. SOUTHWEST
WIND SHOULD PICK UP LATE THIS AFTERNOON AS WELL AS TEMPERATURES
WARM TO ARUOND MID 60S AND HUMIDITIES HAVE POTENTIAL TO DROP BELOW
20 PERCENT. STRONG STORM SYSTEM TO MOVE IN FROM PACIFIC NORTHWEST
TOMORROW...DECREASING TEMPERATURES...YET INCREASING INSTABILITY
AND WIND SPEEDS. CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY
WITH HIGHER PROBABILITY IN THE AFTERNOON. WETTING CONDITIONS
POSSIBLE...WITH TEMPS TO GET BELOW FREEZING TUESDAY NIGHT INTO
WEDNESDAY.

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

FORECASTER...MCDONALD

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT)...BECOMING PARTLY
                    CLOUDY (40-50 PERCENT) WITH A VERY SLIGHT CHANCE
                    OF SHOWERS AFTER 1400.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 12
                    TO 18 MPH WITH GUSTS TO AROUND 25 MPH AFTER 1400.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 25
                    MPH LATE AFTER 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4000 FT AGL INCREASING TO 10000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH INCREASING TO AROUND 25
                    MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (50000 KNOT-FT) INCREASING TO EXCELLENT
                    (250000 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS UNTIL 2100.
MIN TEMPERATURE.....33-37.
MAX HUMIDITY........70-75 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 14 MPH DECREASING TO 8
                    TO 10 MPH AFTER 2400. GUSTS UP TO 20 MPH UNTIL
                    2400. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS UNTIL 2400.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH DECREASING TO 10 TO 15
                    MPH AFTER 2400.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6000 FT AGL DECREASING TO AROUND 600 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH DECREASING TO AROUND
                    10 MPH AFTER 2400.
SMOKE DISPERSAL.....VERY GOOD (120000 KNOT-FT) DECREASING TO POOR
                    (6000 KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
                    THUNDERSTORMS AND RAIN SHOWERS THROUGHOUT
                    THE DAY...WITH BETTER CHANCES IN THE AFTERNOON.
MAX TEMPERATURE.....50-55.
MIN HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH...BECOMING SOUTHWEST
                    AROUND 20 MPH WITH GUSTS TO AROUND 30 MPH
                    AFTER 1000. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 12 TO 15 MPH INCREASING TO 25 TO 30
                    MPH AFTER 1100.
LAL.................2 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.25 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL INCREASING TO 7500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH INCREASING TO 30 TO 35
                    MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (45000 KNOT-FT) INCREASING TO EXCELLENT
                    (230000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...COLDER. MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING...THEN SLIGHT CHANCE OF
THUNDERSTORMS AND SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE MID
20S. WEST WINDS AROUND 13 MPH.
.WEDNESDAY...PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE
LOWER 50S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS...SNOW
SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS
IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
AROUND 30. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...MCDONALD
REQUESTED BY...SHIVE
REASON FOR REQUEST...PRESCRIBED
.TAG 20090511.HUNTE.01/RIW