FNUS75 KRIW 041711
FWSRIW

SPOT FORECAST FOR MOSS RANCH...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
1111 AM MDT MON MAY 4 2009

FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON MAY 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LEVEL WESTERLY FLOW WILL BRING IN A SERIES OF
WEAK UPPER LEVEL DISTURBANCES FROM THE WEST ACROSS THE AREA. THESE DISTURBANCES
WILL PRODUCE ONLY ISOLATED AFTERNOON AND EVENING THUNDERSTORMS THROUGH
THE WEEK. OTHERWISE EXPECT MILDER AND DRIER CONDITIONS THAN WHAT HAS BEEN
EXPERIENCED DURING THE LAST SEVERAL WEEKS.

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

FORECASTER...LIPSON

.TODAY...
SKY/WEATHER.........PARTLY SUNNY (40-50 PERCENT) WITH MORE CUMULUS
                    CLOUDS FORMING OVER THE BASIN TO THE WEST.                     CUMULUS DEVELOPM
                    ISOLATED THUNDERSTORMS IN THE AFTERNOON AFTER 1500.
MAX TEMPERATURE.....60-62.
MIN HUMIDITY........22-24 PERCENT.
20 FOOT WINDS.......BECOMING WEST NORTHWEST BT 1200 AT 10 TO 15 MPH
                    WITH HIGHER GUSTS IN THE AFTERNOON. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR ANY THUNDERSTORMS
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20 MPH
                    IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.4 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5700-6700 FT AGL.
TRANSPORT WINDS.....WEST 13 TO 22 MPH.
SMOKE DISPERSAL.....GOOD (60300 KNOT-FT) INCREASING TO VERY GOOD
                    (128900 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (70-80 PERCENT).
MIN TEMPERATURE.....36-39.
MAX HUMIDITY........67-70 PERCENT.
20 FOOT WINDS.......WEST WINDS AROUND 8 MPH EARLY IN THE EVENING
                    BECOMING DOWNSLOPE/DOWNVALLEY FROM THE EAST SOUTHEAST 4-7 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......800-1800 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 16 MPH.
SMOKE DISPERSAL.....POOR (4400-29300 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50-60 PERCENT). SLIGHT CHANCE OF
                    RAIN SHOWERS THROUGH THE DAY. ISOLATED
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....66-68.
MIN HUMIDITY........24-26 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH FROM THE WEST SOUTHWEST
                    BECOMING WEST AROUND 10 MPH LATE IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR ANY THUNDERSTORMS
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3100 FT AGL INCREASING TO 7800 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 16 TO 20 MPH.
SMOKE DISPERSAL.....FAIR (42800 KNOT-FT) INCREASING TO VERY GOOD
                    (133400 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING...THEN SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 40S. WINDS GENERALLY
LESS THAN 10 MPH.
.WEDNESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS. LOWS IN THE
UPPER 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND SNOW SHOWERS.
LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WINDS GENERALLY LESS
THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...CATHY HUTTON
REASON FOR REQUEST...PRESCRIBED
.TAG 20090504.MOSSR.01/RIW