FNUS75 KRIW 261839
FWSRIW

SPOT FORECAST FOR FONTENELLE WILLOW RX...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
1239 PM MDT MON APR 26 2010

FORECAST IS BASED ON IGNITION TIME OF 1235 MDT ON APRIL 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A RIDGE OF HIGH PRESSURE WILL BUILD OVER SOUTHWEST WYOMING OVERNIGHT
BUT QUICKLY MOVE OFF TO THE EAST TUESDAY MORNING. SOUTHWEST SURFACE FLOW
WILL INCREASE LATE TUESDAY MORNING...AHEAD OF A STRONG PACIFIC STORM
SYSTEM. MODERATE SOUTHWEST WIND NEAR MOUNTAIN TOP LEVEL WILL BEGIN
TO SURFACE AROUND 1100 HOURS TUESDAY. STRONG SOUTHWEST WIND IS
ANTICIPATED TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING AHEAD OF A
STRONG SURFACE COLD FRONT...EXPECTED TO MOVE THROUGH THE BURN AREA
AROUND NOON WEDNESDAY.

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

FORECASTER...CHURCH

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....26-29.
MAX HUMIDITY........80-84 PERCENT.
WIND (20 FT)........NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND 15
                    MPH EARLY IN THE EVENING BECOMING
                    NORTH 4-7 MPH AFTER 2200.
RIDGE TOP WINDS.....WEST-NORTHWEST AROUND 15 MPH SHIFTING TO THE SOUTHWEST
                    LATE IN THE NIGHT.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......400-900 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR (5600-9900 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). SLIGHT CHANCE OF
                    RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........20-24 PERCENT.
WIND (20 FT)........NORTH 2 TO 5 MPH IN THE MORNING BECOMING SOUTH 7
                    TO 11 MPH AFTER 1000...THEN SOUTHWEST 12 TO 16 MPH
                    WITH GUSTS TO 24 MPH AFTER 2000. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 12-17 MPH IN THE MORNING...BECOMING SOUTHWEST
                    17 TO 21 MPH WITH GUSTS TO 26 MPH AFTER 2000.
LAL.................1 UNTIL 1400...THEN 2.
CWR.................5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......9000-11000 FT AGL.
TRANSPORT WINDS.....TRANSPORT WINDS...SOUTHWEST 15 TO 25 MPH.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT (135000-275000).

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLOUDY. CHANCE OF SHOWERS IN THE EVENING...THEN
SNOW SHOWERS LIKELY AFTER MIDNIGHT. LOWS AROUND 30. SOUTHWEST
WINDS 15 TO 20 MPH.
.WEDNESDAY...MUCH COLDER. CLOUDY WITH SHOWERS AND SNOW SHOWERS
LIKELY. LOWS AROUND 18. HIGHS IN THE UPPER 30S. WEST TO NORTHWEST WINDS
AROUND 15 MPH.
.THURSDAY...CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS AROUND 19.
HIGHS IN THE MID 30S. WEST WINDS AROUND 15 MPH.
.FRIDAY...MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS IN THE
LOWER 20S. HIGHS IN THE UPPER 30S. NORTHWEST WINDS AROUND 10 MPH.
.SATURDAY...MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS IN
THE LOWER 20S. HIGHS IN THE LOWER 40S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...CHURCH
REQUESTED BY...BANISTER
REASON FOR REQUEST...PRESCRIBED
.TAG 20100426.FONTE.01/RIW

A RIDGE OF HIGH PRESSURE WILL BUILD OVER SOUTHWEST WYOMING OVERNIGHT
BUT QUICKLY MOVE OFF TO THE EAST TUESDAY MORNING. SOUTHWEST SURFACE FLOW
WILL INCREASE LATE TUESDAY MORNING...AHEAD OF A STRONG PACIFIC STORM
SYSTEM. MODERATE SOUTHWEST WIND NEAR MOUNTAIN TOP LEVEL WILL BEGIN
TO SURFACE AROUND 1100 HOURS TUESDAY. STRONG SOUTHWEST WIND IS
ANTICIPATED TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING AHEAD OF A
STRONG SURFACE COLD FRONT...EXPECTED TO MOVE THROUGH THE BURN AREA
EARLY WEDNESDAY AFTERNOON.