FNUS75 KRIW 211520
FWSRIW

SPOT FORECAST FOR WEST SLOPE RX...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
920 AM MDT SUN MAR 21 2010

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON MARCH 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE WILL DOMINATE THE WEATHER TODAY AND TONIGHT WITH LIGHT...
TERRAIN DRIVEN WINDS AND FAIRLY LOW DAYTIME RELATIVE HUMIDITY. SOUTH WIND WILL
BECOME ESTABLISHED TONIGHT AND TURN TO THE WEST DURING THE EARLY AFTERNOON
MONDAY. A COLD FRONT WILL MOVE ACROSS THE AREA DURING THE LATE AFTERNOON WITH
WINDS SHIFTING TO THE NORTHWEST. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS
WILL DEVELOP MONDAY AFTERNOON.

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

FORECASTER...SMITH

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT).
MAX TEMPERATURE.....49-52.
MIN HUMIDITY........16-19 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTH AROUND
                    10 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH...BECOMING WEST 10 TO 15
                    MPH AFTER 1400.
LAL.................1
CWR.................0 PERCENT.
HAINES INDEX........3.
MIXING HEIGHT.......5500 FEET.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
MIN TEMPERATURE.....35-38.
MAX HUMIDITY........47-50 PERCENT.
WIND (20 FT)........SOUTH WINDS 8 TO 12 MPH WITH GUSTS TO AROUND 18 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 MPH.
LAL.................1
CWR.................0 PERCENT.
HAINES INDEX........2.
MIXING HEIGHT.......2000 FEET.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR.

.MONDAY...
SKY/WEATHER.........CLOUDY (80-90 PERCENT). SCATTERED SNOW SHOWERS
                    IN THE MORNING. SCATTERED RAIN SHOWERS THROUGH
                    THE DAY. ISOLATED THUNDERSTORMS AFTER 1500 LST.
MAX TEMPERATURE.....45-48.
MIN HUMIDITY........33-36 PERCENT.
WIND (20 FT)........WEST 10 TO 15 MPH WITH GUSTS UP TO 25 MPH...BECOMING
                    NORTHWEST 10 TO 15 MPH WITH GUSTS TO 25 MPH AFTER
                    1500 LST.
RIDGE TOP WINDS.....WEST 15 MPH...BECOMING NORTHWEST 15 TO 20 MPH WITH
                    GUSTS TO AROUND 25 MPH AFTER 1500.
LAL.................2
CWR.................25 PERCENT.
HAINES INDEX........4.
MIXING HEIGHT.......7500 FEET.
TRANSPORT WINDS.....WEST AROUND 20 MPH...BECOMING NORTHEST AROUND 20 MPH
                    AFTER 1500.
SMOKE DISPERSAL.....EXCELLENT.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...COLDER...CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS IN THE EVENING...THEN CHANCE OF SNOW AFTER MIDNIGHT. LOWS
IN THE MID 20S. NORTH WINDS AROUND 12 MPH.
.TUESDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW AND ISOLATED
SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE
MID 40S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW. LOWS
IN THE UPPER 20S. HIGHS IN THE LOWER 50S. WINDS GENERALLY LESS
THAN 10 MPH.

$$

FORECASTER...SMITH
REQUESTED BY...CODY DISPATCH
REASON FOR REQUEST...PRESCRIBED
.TAG 20100321.WESTS.01/RIW