FNUS75 KRIW 301020
FWSRIW

SPOT FORECAST FOR WILLOW DRAW WF...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
420 AM MDT THU SEP 30 2010

FORECAST IS BASED ON REQUEST TIME OF 1804 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A RIDGE OF HIGH PRESSURE...MOSTLY CLEAR SKIES...AND
A LIGHT SURFACE WIND FIELD WILL CONTINUE TO PREVAIL THROUGH
SATURDAY WITH NO SIGNIFICANT TRENDS IN TEMPERATURE OR RELATIVE HUMIDITY.
A PACIFIC STORM SYSTEM WILL DIG INTO THE SOUTHWEST U.S. EARLY NEXT
WEEK BRINGING A CHANCE OF SHOWERS AND COOLER TEMPERATURES MONDAY AND
TUESDAY.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....72-74.
MIN HUMIDITY........14-17 PERCENT.

20 FOOT WINDS.......EAST NORTHEAST 4-7 MPH IN THE MORNING BECOMING
                    UPSLOPE OR WEST SOUTHWEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......1000-2000 FT AGL INCREASING TO 5000-6000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH BECOMING SOUTHWEST IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (20000-39400 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....35-38.
MAX HUMIDITY........63-68 PERCENT.

20 FOOT WINDS.......BECOMING DOWNSLOPE/DOWNVALLEY OR EAST NORTHEAST
                    4-7 MPH AT DUSK.
RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......3100-4100 FT AGL DECREASING TO 500 TO 1000 FEET AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR.

.FRIDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....72-75.
MIN HUMIDITY........14-17 PERCENT.
20 FOOT WINDS.......EAST NORTHEAST 4-7 MPH BECOMING WEST SOUTHWEST
                    IN THE AFTERNOON
RIDGE TOP WINDS.....WEST 5 TO 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......NEAR 1000 FEET IN THE MORNING INCREASING TO
                    2300-3300 FT AGL INCREASING TO 6600-7600 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
SMOKE DISPERSAL.....POOR.


FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID
70S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH.
.MONDAY...COOLER. PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS...
SNOW SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE MID 30S.
HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...ICT4
REASON FOR REQUEST...WILDFIRE
.TAG 20100929.WILLO.01/RIW