FNUS75 KRIW 222329
FWSRIW

SPOT FORECAST FOR NORTH FORK...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
529 PM MDT SUN AUG 22 2010

FORECAST IS BASED ON REQUEST TIME OF 1706 MDT ON AUGUST 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
GUSTY SOUTHWEST WINDS WILL CONTINUE THIS EVENING OVER THE NORTH
FORK FIRE...ALONG WITH SOME SCATTERED SHOWERS AND THUNDERSTORMS.
GUSTS TO 50 MPH AND LIGHTNING WILL BE THE PRIMARY THREAT...THOUGH
SOME HEAVY RAIN AND SMALL HAIL WILL BE POSSIBLE. THE TROUGH MOVES
ACROSS AROUND OR SHORTLY AFTER MIDNIGHT TONIGHT. THIS WILL SHIFT
THE WIND TO THE WEST TO NORTHWEST. THE SHOWERS AND THUNDERSTORMS
WILL PERSIST INTO THE EARLY MORNING HOURS...ENDING BY DAYBREAK.
SOME LOW CLOUDS/FOG ARE POSSIBLE THROUGH LATE MORNING. SOME WEST
BREEZES WILL LINGER INTO MONDAY WITH LOWER SPEEDS EXPECTED.
TUESDAY LOOKS DRY WITH LIGHT WINDS.


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

FORECASTER...T.BAKER

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SCATTERED
                    THUNDERSTORMS IN THE EVENING. SCATTERED RAIN
                    SHOWERS THROUGH THE NIGHT. ISOLATED
                    THUNDERSTORMS AFTER MIDNIGHT. SOME LOW CLOUDS
                    AND FOG POSSIBLE AFTER 0300.
MIN TEMPERATURE.....40-43.
MAX HUMIDITY........90-95 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 30
                    MPH...BECOMING WEST TO NORTHWEST 10 TO 15 MPH GUSTS
                    TO 30 MPH SHORTLY AFTER MIDNIGHT. SLOWLY DIMINISHING
                    THROUGH THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 30 MPH GUSTS TO 40 MPH...SHIFTING
                    TO THE WEST TO NORTHWEST 20 TO 25 MPH WITH GUSTS TO
                    35 MPH SHORTLY AFTER MIDNIGHT.
LAL.................4 UNTIL 2400...THEN 2.
CHC OF WETTING RAIN.25 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5000 FT AGL DECREASING TO 1000 FT AGL AROUND MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 35 MPH SHIFTING TO THE WEST TO NORTHWEST
                    AROUND 35 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....EXCELLENT (175000 KNOT-FT) DECREASING TO POOR
                    (35000 KNOT-FT) AFTER MIDNIGHT.

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT). SOME LOW CLOUDS/FOG
                    POSSIBLE THROUGH 1100.
MAX TEMPERATURE.....61-64.
MIN HUMIDITY........24-29 PERCENT.
20 FOOT WINDS.......WEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 20
                    MPH.
RIDGE TOP WINDS.....WEST 10-15 MPH GUSTS TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 5000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 20 MPH.
SMOKE DISPERSAL.....POOR (20000 KNOT-FT) INCREASING TO VERY GOOD
                    (100000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...CLEAR. LOWS 30-35. NORTHWEST WINDS AROUND 10 MPH.
.TUESDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.
SOUTHEAST WINDS AROUND 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE
LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...T.BAKER
REQUESTED BY...GALEN ROESLER
REASON FOR REQUEST...WILDFIRE
.TAG 20100822.NORTH.01/RIW