FNUS75 KRIW 011144
FWSRIW

SPOT FORECAST FOR WILLOW DRAW WF...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
544 AM MDT FRI OCT 1 2010

FORECAST IS BASED ON REQUEST TIME OF 1722 MDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
AN UPPER RIDGE OF HIGH PRESSURE WILL REMAIN ANCHORED TO THE WEST
THROUGH SATURDAY. THE RESULT WILL ONLY BE A FEW PASSING CLOUDS...
COLD MORNINGS WITH MILD AFTERNOON TEMPERATURES AND GENERALLY
DIURNALLY DRIVEN WINDS. THE NEXT CHANCE FOR PRECIPITATION WILL
NOT OCCUR UNTIL MONDAY.


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

FORECASTER...SKRBAC

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........12-15 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 6 MPH...BECOMING VARIABLE
                    IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1800-2800 FT AGL INCREASING TO 6000-6500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 6 MPH...BECOMING VARIABLE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (14800-37000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....34-37.
MAX HUMIDITY........75-78 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....VARIABLE AT 5 MPH...BECOMING SOUTHEAST AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5200-6200 FT AGL DECREASING TO 1900-2900 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....VARIABLE AROUND 5 MPH BECOMING SOUTHEAST AFTER 2200L.
                    AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR (12500-30000 KNOT-FT).

.SATURDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........13-16 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....VARIABLE AROUND 6 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2400-3400 FT AGL INCREASING TO 5000-5500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....VARIABLE 5-9 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (20400-45000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE
UPPER 30S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN
10 MPH.
.MONDAY...COOLER. MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...SKRBAC
REQUESTED BY...ICT4
REASON FOR REQUEST...WILDFIRE
.TAG 20100930.WILLO.01/RIW