FNUS75 KRIW 281440
FWSRIW

SPOT FORECAST FOR BIG FORK...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
840 AM MDT SUN APR 28 2013

FORECAST IS BASED ON REQUEST TIME OF 0816 MDT ON APRIL 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A COLD FRONT HAS PASSED SOUTH OF THE FIRE THIS MORNING
WITH INCREASED CLOUDS...COLDER TEMPERATURES...HIGHER RELATIVE HUMIDITY
AND INCREASED SHOWER ACTIVITY.  ANOTHER COLD FRONT WILL PASS THROUGH
EARLY MONDAY EVENING.

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

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT) WITH A CHANCE OF RAIN
                    SHOWERS. ISOLATED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....65-68.
MIN HUMIDITY........25-28 PERCENT.
20 FOOT WINDS.......NORTHEAST WINDS 10 TO 17 MPH WITH GUSTS TO
                    AROUND 30 MPH UNTIL LATE AFTERNOON. GUSTY AND
                    ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....NORTHEAST 20 TO 25 MPH DECREASING TO 10 TO 15
                    MPH IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50-60 PERCENT) BY MIDNIGHT.
                    ISOLATED SHOWERS AND THUNDERSTORMS EARLY IN THE
                    EVENING.
MIN TEMPERATURE.....39-42.
MAX HUMIDITY........67-70 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH BECOMING SOUTH 8 TO
                    9 MPH WITH GUSTS TO AROUND 15 MPH EARLY IN THE
                    MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS EARLY IN THE EVENING.
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.
LAL.................2 UNTIL 2100...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.MONDAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (65-75 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......SOUTH WINDS 12 TO 14 MPH SHIFTING TO THE
                    SOUTHWEST 13 TO 17 MPH IN THE AFTERNOON. GUSTS
                    UP TO 30 MPH DECREASING TO 20 MPH LATE IN THE
                    AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH AROUND 20 MPH SHIFTING TO THE SOUTHWEST
                    IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...MOSTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING. LOWS IN THE MID 30S. NORTHWEST WINDS AROUND
13 MPH.
.TUESDAY...MUCH COLDER. MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND
SNOW. LOWS AROUND 30. HIGHS AROUND 40. WINDS GENERALLY LESS THAN
10 MPH.
.WEDNESDAY...PARTLY CLOUDY. LOWS AROUND 30. HIGHS IN THE UPPER
40S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...WARMER. MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN
THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...CATHY HUTTON
REASON FOR REQUEST...WILDFIRE
.TAG 20130428.BIGFO.01/RIW