FNUS75 KRIW 111539
FWSRIW

SPOT FORECAST FOR EAST MORMON HAND PILES 2...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
939 AM MDT WED MAY 11 2011

FORECAST IS BASED ON IGNITION TIME OF 0935 MDT ON MAY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
WRAPAROUND MOISTURE ASSOCIATED WITH AN AREA OF LOW PRESSURE OVER
COLORADO WILL KEEP CLOUD COVER OVER THE BURN SITE THIS MORNING.
LOWER CLOUDS WILL LIFT THROUGH THE REMAINDER OF THE MORNING...AND
CLOUD COVER WILL GENERALLY LESSEN THIS AFTERNOON AS A RIDGE OF
HIGH PRESSURE WORKS TO BUILD OVER WESTERN WYOMING. THIS AREA OF
HIGH PRESSURE WILL BRING BENIGN CONDITIONS OVER THE BURN SITE FOR
THURSDAY...WITH WARMING TEMPERATURES AND DECREASING DAYTIME
HUMIDITY. WESTERLY WIND WILL DEVELOP OVER THE BURN SITE THURSDAY
MORNING...WITH SOME GUSTS TO AROUND 20 MPH POSSIBLE IN THE
AFTERNOON.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (35-45 PERCENT) BY 1300.
MAX TEMPERATURE.....46-50.
MIN HUMIDITY........36-39 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....VARIABLE IN DIRECTION AT 5 TO 10 MPH.
MIXING HEIGHT.......INCREASING TO 4800-5800 FT AGL BY 1300.
TRANSPORT WINDS.....VARIABLE IN DIRECTION AT 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (26400-44700 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....29-33.
MAX HUMIDITY........79-82 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....BECOMING WEST AT 5 TO 10 MPH BY 2200.
MIXING HEIGHT.......DECREASING TO 2400 FT AGL BY 0200.
TRANSPORT WINDS.....BECOMING WEST 10 TO 15 MPH BY 2200.
SMOKE DISPERSAL.....POOR TO FAIR (26200-41100 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....58-61.
MIN HUMIDITY........28-32 PERCENT.
20 FOOT WINDS.......WEST 5-10 MPH. GUSTS UP TO 15 MPH AFTER
                    1100.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......INCREASING TO 6100-6900 FT AGL BY 1400.
TRANSPORT WINDS.....WEST 14 TO 17 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (53900-94300 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE MID 30S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN
10 MPH.
.SATURDAY...PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE
UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...M  WOODS
REASON FOR REQUEST...PRESCRIBED
.TAG 20110511.EASTM.01/RIW