FNUS75 KRIW 251644
FWSRIW

SPOT FORECAST FOR WEST SLOPE RX...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
1044 AM MDT FRI MAR 25 2011

FORECAST IS BASED ON IGNITION TIME OF 1025 MDT ON MARCH 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A BROAD STORM SYSTEM STRETCHES FROM THE NORTH CENTRAL
ROCKIES TO THE WEST COAST...WITH A GOOD AMOUNT OF MOISTURE
STREAMING INTO WYOMING FROM THE SOUTHWEST. LOW LEVEL MOISTURE HAS
ALSO MOVED INTO THE BIG HORN BASIN FROM MONTANA. EXPECTING WIND
FLOW TO PICK UP SOME THIS AFTERNOON...BUT NOT TOO MUCH IN THE BURN
AREA. CLOUDS WILL CONTINUE WITH SHOWERS POSSIBLE LATER IN THE
AFTERNOON...WITH STABILITY DECREASING INTO THE EARLY EVENING
HOURS. WILL SEE LOW LEVEL WINDS SHIFTING AROUND WITH COMPLEX
SYSTEM MOVING OVER THE AREA OVERNIGHT...WITH POSSIBLE NORTHWEST
PUSH IN THE EVENING. WIND SPEEDS LOOK SIMILAR ON SATURDAY...WITH
CLOUDS DECREASING AS THE DAY GOES ON.


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

FORECASTER...MCDONALD

.TODAY...
SKY/WEATHER.........CLOUDY (75-90 PERCENT). SCATTERED RAIN SHOWERS
                    IN THE AFTERNOON.
MAX TEMPERATURE.....48-52.
MIN HUMIDITY........35-40 PERCENT.
20 FOOT WINDS.......SOUTHWEST AROUND 5 MPH...INCREASING TO 8 MPH
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 5 TO 8 MPH...SHIFTING TO THE SOUTHWEST IN
                    AFTERNOON AND INCREASING TO 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 4500-5000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 8 MPH SHIFTING TO THE SOUTHWEST
                    AT 10 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (8000 KNOT-FT) IN THE MORNING...BECOMING
                    FAIR (45000-50000 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLOUDY (90-100 PERCENT). NUMEROUS RAIN SHOWERS
                    AND SNOW SHOWERS IN THE EVENING...THEN
                    SCATTERED SNOW SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....25-28.
MAX HUMIDITY........80-90 PERCENT.
20 FOOT WINDS.......BECOMING NORTHWEST AROUND 8 MPH WITH GUSTS UP
                    TO 15 MPH IN THE EVENING...THEN SOUTH 4 TO 7
                    MPH AFTER 0300.
RIDGE TOP WINDS.....BECOMING NORTHWEST 10 TO 12 MPH WITH HIGHER
                    GUSTS IN THE EVENING...THEN SOUTH 5 TO 8 MPH
                    AFTER 0300.
LAL.................1.
CHC OF WETTING RAIN.25 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1200-1500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 10 MPH SHIFTING TO THE NORTHWEST
                    AROUND 12 MPH AFTER 2100...THEN SOUTH 5 TO 8 MPH
                    AFTER 0300.
SMOKE DISPERSAL.....POOR (12000-15000 KNOT-FT).

.SATURDAY...
SKY/WEATHER.........CLOUDY (80-90 PERCENT). CHANCE OF SNOW IN THE
                    MORNING...THEN SLIGHT CHANCE OF RAIN IN THE
                    AFTERNOON.
MAX TEMPERATURE.....46-48.
MIN HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN
                    THE AFTERNOON AND INCREASING TO AROUND 8 MPH.
LAL.................1.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1800 FT AGL INCREASING TO 5500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 7 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 10 MPH IN THE LATE MORNING AND EARLY AFTERNOON.
SMOKE DISPERSAL.....POOR (12500-15000 KNOT-FT) IN THE MORNING...BECOMING
                    FAIR (55000 KNOT FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLOUDY. LOWS IN THE LOWER 20S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS IN THE
MID 20S. HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN
10 MPH.
.MONDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS
IN THE LOWER 20S. HIGHS AROUND 50. WINDS GENERALLY LESS THAN
10 MPH.
.TUESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
EVENING. SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE MID 20S.
HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MCDONALD
REQUESTED BY...CDC
REASON FOR REQUEST...PRESCRIBED
.TAG 20110325.WESTS.01/RIW