FNUS75 KRIW 010925
FWSRIW

SPOT FORECAST FOR NORTH FORK...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
325 AM MDT WED SEP 1 2010

FORECAST IS BASED ON REQUEST TIME OF 1724 MDT ON AUGUST 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

WINDY CONDITIONS ARE EXPECTED AGAIN TODAY AS THE PRESSURE GRADIENT WILL
BE TIGHT DUE TO A WEATHER SYSTEM PASSING TO THE NORTH OF THE FIRE
LATE TODAY AND TONIGHT. THIS SYSTEM COULD RESULT IN ISOLATED LIGHT
SHOWERS TODAY...BUT MOST OF THE ACTIVITY WITH THIS SYSTEM WILL BE
WELL NORTHWEST AND NORTH OF THE FIRE SITE. THE WIND WILL NOT BE
AS STRONG ON THURSDAY AS HIGH PRESSURE WILL MOVE INTO THE AREA.
FRIDAY SHOULD SEE DRY WEATHER AND LIGHT WIND SPEEDS ONCE AGAIN.

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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY WITH ISOLATED SHOWERS.
MAX TEMPERATURE.....53-58.
MIN HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......WEST NORTHWEST AROUND 10 MPH...BECOMING
                    WEST TO SOUTHWEST AT 15 TO 20 MPH AROUND NOON.
                    GUSTS BETWEEN 25 AND 35 MPH.
RIDGE TOP WINDS.....WEST TO SOUTHWEST AT 20 TO 25 MPH WITH GUSTS
                    BETWEEN 30 AND 40 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 5300-5800 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AT 30 MPH.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....30-35.
MAX HUMIDITY........85-90 PERCENT.
20 FOOT WINDS.......WEST AT 15 TO 20 MPH...GUSTS AROUND 25 MPH UNTIL
                    900 PM...THEN WIND DECREASING TO 7 TO 12 MPH.
RIDGE TOP WINDS.....WEST AT 20 TO 25 MPH...GUSTS AROUND 30 MPH UNTIL
                    900 PM...THEN WIND DECREASING TO 12 TO 17 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1200 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AT 30 MPH...DECREASING TO AROUND 15 MPH
                    AFTER MIDNIGHT.
SMOKE DISPERSAL.....VERY GOOD...DECREASING TO FAIR BY MIDNIGHT...
                    THEN BECOMING POOR AFTER MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....53-58.
MIN HUMIDITY........28-31 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH...GUSTS UP TO 13 MPH
                    DURING THE AFTERNOON.
RIDGE TOP WINDS.....UPSLOPE/UPVALLEY AROUND 10 MPH...GUSTS TO 18 MPH
                    IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 4500-5100 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AT 8 MPH IN THE MORNING...BECOMING NORTHWEST
                    AROUND 10 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR...BECOMING FAIR IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.FRIDAY...MOSTLY CLEAR. HIGHS IN THE MID 60S.
WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.
WEST WINDS 15 TO 20 MPH.

.SUNDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
SOUTHWEST WINDS 15 TO 20 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...CODY DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20100831.NORTH.01/RIW