FNUS75 KRIW 261329
FWSRIW

SPOT FORECAST FOR NORTH FORK...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
729 AM MDT THU AUG 26 2010

FORECAST IS BASED ON REQUEST TIME OF 0700 MDT ON AUGUST 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM
MDT THIS EVENING...

.DISCUSSION...
HIGH PRESSURE CONTINUES OVER THE FIRE TODAY...BRINGING CRITICAL
FIRE WEATHER CONDITIONS. TEMPERATURES WILL WARM A FEW MORE DEGREES
TODAY...WITH DAYTIME HUMIDITY DECREASING INTO THE SINGLE DIGITS
OVER THE LOWER ELEVATIONS OF THE FIRE. IN ADDITION...BREEZY
SOUTHWEST WIND WILL DEVELOP OVER THE FIRE...GUSTS ARE EXPECTED TO
BE IN EXCESS OF 25 MPH. THESE CONDITIONS WILL COMBINE WITH
CRITICALLY DRY FUELS TO BRING RED FLAG CONDITIONS OVER THE FIRE
THIS AFTERNOON...WHICH WILL LINGER INTO THE EARLY EVENING HOURS.
AN APPROACHING TROUGH OF LOW PRESSURE WILL THEN MOVE OVER THE FIRE
LATE TONIGHT AND INTO FRIDAY. THIS SYSTEM WILL INCREASE CLOUD
COVER...LOWER TEMPERATURES AND ELEVATE HUMIDITY ACROSS THE FIRE
FOR FRIDAY. ADDITIONALLY...THIS APPROACHING SYSTEM WILL INTRODUCE
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS TO THE FIRE
BEGINNING FRIDAY MORNING...AND CONTINUING THROUGH THE WEEKEND.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........CLEAR (0-5 PERCENT) BECOMING MOSTLY SUNNY
                    (15-25 PERCENT) AFTER 1200.
MAX TEMPERATURE.....73-78.
MIN HUMIDITY........7-12 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE BECOMING WEST AT 10 TO 17 MPH
                    AFTER 0900. GUSTS UP TO 30 MPH...ESPECIALLY AFTER
                    1100.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
HAINES INDEX........5 INCREASING TO 6 OR HIGH POTENTIAL FOR LARGE
                    PLUME DOMINATED FIRE GROWTH AFTER 0900.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....43-47.
MAX HUMIDITY........47-52 PERCENT.
20 FOOT WINDS.......BREEZY. SOUTHWEST WINDS 17 TO 22 MPH WITH GUSTS
                    TO AROUND 35 MPH INCREASING TO 25-30 MPH
                    WITH GUSTS TO AROUND 45 MPH AFTER 0200.
RIDGE TOP WINDS.....SOUTHWEST 10-15 MPH INCREASING TO 25-30
                    MPH AFTER 0400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH...DECREASING TO 4 AFTER 0400.

.FRIDAY...
SKY/WEATHER.........INCREASING TO PARTLY CLOUDY (50-60 PERCENT)
                    AFTER 0700. ISOLATED RAIN SHOWERS AFTER 0700...
                    THEN SCATTERED SHOWERS AND THUNDERSTORMS
                    DEVELOPING AROUND 1300.
MAX TEMPERATURE.....68-72.
MIN HUMIDITY........22-26 PERCENT.
20 FOOT WINDS.......BREEZY. SOUTHWEST WINDS 25-30 MPH. GUSTS UP
                    TO 45 MPH. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS AFTER 1200.
RIDGE TOP WINDS.....SOUTHWEST AROUND 35 MPH DECREASING TO 20 TO 25
                    MPH AFTER 0800...THEN INCREASING TO 25-30 MPH
                    AFTER 1400.
LAL.................1 UNTIL 1300...THEN 3.
CHC OF WETTING RAIN.4 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. SOUTHWEST WINDS AROUND
21 MPH.
.SATURDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.
SOUTHWEST WINDS AROUND 20 MPH.
.SUNDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 40. HIGHS IN THE MID 60S. SOUTHWEST WINDS AROUND
14 MPH.
.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS...
THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN
THE UPPER 50S. WEST WINDS AROUND 12 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...CODY DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20100826.NORTH.01/RIW