FNUS75 KRIW 231728 CCA
FWSRIW

SPOT FORECAST FOR RED ROCK...CORRECTED
NATIONAL WEATHER SERVICE RIVERTON WY
1127 AM MDT TUE AUG 23 2011

FORECAST IS BASED ON REQUEST TIME OF 1107 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HOT DRY AND WINDY TODAY UNDERNEATH A RIDGE. A TROUGH MOVING
THROUGH MONTANA WILL INCREASE THE PRESSURE GRADIENT AND THEREFORE
THE OVERALL WIND SPEEDS. WE ARE EXPECTED TO MIX OUT TO ABOUT 10000
FEET ABOVE THE BOTTOM ELEVATION OF THE FIRE...WHERE 28 TO 35 MPH
WESTERLY WINDS RESIDE...EXPECT THESE WINDS TO MIX DOWN THIS
AFTERNOON. THESE MODERATE WESTERLIES WILL CREATE DOWNSLOPE DRYING
AND COMBINE WITH THE ALREADY DRY AMBIENT AIR TO CAUSE EXTREME FIRE
BEHAVIOR DURING THE MID AFTERNOON INTO THE EARLY EVENING. WEDNESDAY
LOOKS DRY AGAIN WITH SOUTHWEST WINDS AT 10 TO 20 MPH IN THE
AFTERNOON.

TEMPERATURES WILL REMAIN HOT THROUGH THE WEEK WITH LITTLE TREND...RHS
WILL REMAIN IN THE LOW TEENS WITH A SLIGHT UPWARD TREND TOWARD THE
END OF THE WEEK AS THE RIDGE BREAKS DOWN. DRY THUNDERSTORMS ARE
POSSIBLE TOWARD THE END OF THE WEEK...POSSIBLY AS EARLY AS
THURSDAY. EXPECT THUNDERSTORMS EACH AFTERNOON THIS WEEKEND AND
INTO EARLY NEXT WEEK WITH CHANCES OF WETTING RAINS INCREASING WITH
EACH DAY...BUT CHANCES REMAIN FAIRLY LOW.

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

FORECASTER...ALLEN

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........14-17 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 13 TO 16
                    MPH WITH GUSTS TO AROUND 30 MPH IN THE LATE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO WEST
                    AROUND 25 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....40-44.
MAX HUMIDITY........58-61 PERCENT.
20 FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND 30
                    MPH EARLY IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY
                    4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 10 MPH
                    LATE IN THE EVENING...THEN SHIFTING TO THE SOUTHWEST
                    AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.WEDNESDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST AROUND
                    10 MPH AND GUSTY LATE IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST SOUTHWEST 8 TO 13 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

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

$$

FORECASTER...ALLEN
REQUESTED BY...COW LAKE IC
REASON FOR REQUEST...WILDFIRE
.TAG 20110823.REDRO.01/RIW