FNUS75 KRIW 311349
FWSRIW

SPOT FORECAST FOR ROBBERS...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
749 AM MDT TUE JUL 31 2012

FORECAST IS BASED ON REQUEST TIME OF 0642 MDT ON JULY 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A SURGE OF MONSOONAL MOISTURE CURRENTLY MOVING INTO SOUTHWEST WYOMING
WILL MOVE NORTHWARD TODAY AND WILL STALL OUT JUST NEAR OR SOUTH OF THE
FIRE. ISOLATED THUNDERSTORMS WILL LIKELY DEVELOP LATER THIS AFTERNOON
INTO THE EARLY EVENING. ANY NEARBY STORM WILL BE CAPABLE OF PRODUCING
STRONG...ERRATIC WIND GUSTS OVER 40 MPH. OTHERWISE...IT WILL CONTINUE
WARM WITH MOSTLY DIURNALLY DRIVEN WINDS. HOWEVER...SOME GUSTY WEST
TO NORTHWEST WINDS MAY PREVAIL LATER TONIGHT INTO WEDNESDAY MORNING.
MORE ISOLATED LATE DAY STORMS ARE POSSIBLE AGAIN WEDNESDAY.

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

FORECASTER...SKRBAC

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING PARTLY
                    CLOUDY (45-55 PERCENT). ISOLATED SHOWERS AND
                    THUNDERSTORMS AFTER 1500L.
MAX TEMPERATURE.....81-84.
MIN HUMIDITY........12-15 PERCENT.
20 FOOT WINDS.......DOWNSLOPE 3-6 MPH BECOMING UPSLOPE/UPVALLEY
                    5-9 MPH AFTER 0900L. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
LAL.................1 UNTIL 1500...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6900-7900 FT AGL INCREASING TO 11500-12000 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 12 TO 17 MPH.
SMOKE DISPERSAL.....VERY GOOD BECOMING EXCELLENT (103200-146500 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY IN THE EVENING (50-60 PERCENT)...
                    MOSTLY CLEAR (20-30 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....54-57.
MAX HUMIDITY........38-44 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 6-12 MPH
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH SHIFTING TO THE WEST
                    AROUND 20 MPH EARLY IN THE MORNING.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......10100-11100 FT AGL DECREASING TO 5200-6200 FT
                    AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 13 TO 22 MPH.
SMOKE DISPERSAL.....GOOD TO VERY GOOD (85900-128200 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (35-45 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....79-82.
MIN HUMIDITY........14-17 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
                    25 MPH EARLY IN THE MORNING BECOMING
                    UPSLOPE/UPVALLEY 5-9 MPH IN THE AFTERNOON. GUSTY AND
                    ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH...DECREASING TO 10 TO 15 MPH IN THE
                    AFTERNOON.
LAL.................1 UNTIL 1400...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5800-6800 FT AGL INCREASING TO 8500-9500 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 18 TO 25 MPH...DECREASING TO 12-16 MPH IN
                    THE AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD (109300-133000 KNOT-FT)

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...MOSTLY CLEAR. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...SKRBAC
REQUESTED BY...TRAVIS BRATEN
REASON FOR REQUEST...WILDFIRE
.TAG 20120731.ROBBE.01/RIW