FNUS75 KRIW 281353
FWSRIW

SPOT FORECAST FOR CASTLE...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
753 AM MDT MON SEP 28 2009

FORECAST IS BASED ON REQUEST TIME OF 0733 MDT ON SEPTEMBER 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

UPPER RIDGE OF HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY
LEADING TO AN INCREASING SOUTHWEST FLOW ALOFT LATER TODAY THROUGH
TUESDAY. INCREASING BOUNDARY LAYER SOUTH TO SOUTHWEST SURFACE FLOW
IS ALSO EXPECTED ACROSS THE AREA TUESDAY AFTERNOON. IT WILL BE DRY
WITH ONLY SOME HIGH CLOUDS EXPECTED LATER TODAY THROUGH TUESDAY
MORNING. AN ISOLATED HIGHER BASED SHOWER OR THUNDERSTORM IS POSSIBLE
LATE TUESDAY AFTERNOON. A STRONG WEATHER SYSTEM AND COLD FRONT WILL
PUSH INTO THE AREA TUESDAY EVENING WITH STRONG SOUTHWEST WINDS...AND
INCREASING CHANCE OF SHOWERS AND DROPPING TEMPERATURES. THE VERY LOW
RELATIVE HUMIDITIES ARE EXPECTED ONCE AGAIN TODAY.

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

FORECASTER...SMITH

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT). AREAS OF SMOKE IN THE
                    AFTERNOON.
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........9-12 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST
                    AROUND 10 MPH WITH GUSTS UP TO 18 MPH LATE IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO AROUND 20
                    MPH LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL INCREASING TO 7000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....POOR (36600 KNOT-FT) INCREASING TO VERY GOOD
                    (112800 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-15 PERCENT). AREAS OF SMOKE.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........54-57 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH EARLY IN THE
                    EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7
                    MPH...THEN BECOMING SOUTHWEST 8 TO 12 MPH
                    AFTER MIDNIGHT. GUSTS UP TO 18 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4000 FT AGL DECREASING TO 1500 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 15 TO 25 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (30000-64700 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). AREAS OF SMOKE
                    IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS
                    AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........10-13 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 20
                    MPH INCREASING TO 25 MPH LATE IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL INCREASING TO 10000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....FAIR (58000 KNOT-FT) INCREASING TO EXCELLENT
                    (213300 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLOUDY. CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS IN THE EVENING...THEN SHOWERS...SNOW SHOWERS LIKELY
AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE MID 30S.
SOUTHWEST WINDS AROUND 13 MPH.
.WEDNESDAY...MUCH COLDER. SHOWERS AND SNOW SHOWERS. LOWS AROUND
17. HIGHS IN THE LOWER 40S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW.
LOWS AROUND 20. HIGHS IN THE MID 40S. WINDS GENERALLY LESS THAN
10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS
IN THE MID 20S. HIGHS IN THE LOWER 50S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...SMITH
REQUESTED BY...CLINT DAWSON
REASON FOR REQUEST...WILDFIRE
.TAG 20090928.CASTL.01/RIW