FNUS75 KRIW 162024
FWSRIW

SPOT FORECAST FOR ANTELOPE...YELLOWSTONE NP/DOI
NATIONAL WEATHER SERVICE RIVERTON WY
224 PM MDT THU SEP 16 2010

FORECAST IS BASED ON REQUEST TIME OF 1337 MDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK DISTURBANCE OVER MONTANA WILL RESULT IN WINDY CONDITIONS
FOR THE REST OF THIS AFTERNOON INTO EARLY EVENING. WEST WINDS GUSTING
TO AROUND 30 MPH CAN BE EXPECTED DURING THIS TIME. WIND SPEEDS WILL
THEN GRADUALLY DECREASE AFTER SUNSET. OTHERWISE...IT WILL BE PARTLY
CLOUDY WITH A DRY AIRMASS THROUGH FRIDAY. THIS WILL RESULT IN LOWER
TO MID 30S FOR TEMPERATURES EARLY FRIDAY MORNING...WITH WINDS
INCREASING AGAIN BY AFTERNOON.

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

FORECASTER...LYNOTT

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....70-73.
MIN HUMIDITY........19-22 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 12 TO 17 MPH. GUSTS UP TO 30
                    MPH INCREASING TO 35 MPH LATE IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH SHIFTING TO THE WEST
                    AROUND 30 MPH LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3000-4000 FT AGL INCREASING TO 6900-7900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 23 TO 30 MPH.
SMOKE DISPERSAL.....GOOD (73500 KNOT-FT) INCREASING TO EXCELLENT
                    (172700 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT).
MIN TEMPERATURE.....34-38.
MAX HUMIDITY........89-92 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 16 MPH WITH GUSTS TO
                    AROUND 30 MPH EARLY IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH DECREASING TO 10 TO 15
                    MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6100-7100 FT AGL DECREASING TO 2200-3200 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 20 TO 28 MPH DECREASING TO 10 TO 15
                    MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....VERY GOOD (142100 KNOT-FT) DECREASING TO POOR
                    (38400 KNOT-FT) AFTER MIDNIGHT.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MAX TEMPERATURE.....72-75.
MIN HUMIDITY........21-24 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 10 TO 14
                    MPH WITH GUSTS TO AROUND 25 MPH IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH SHIFTING TO THE WEST
                    AROUND 25 MPH LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2100-3100 FT AGL INCREASING TO 5900-6900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 14 TO 16 MPH SHIFTING TO THE WEST 22 TO
                    26 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (37500 KNOT-FT) INCREASING TO VERY GOOD
                    (122100 KNOT-FT) IN THE AFTERNOON.

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

$$

FORECASTER...LYNOTT
REQUESTED BY...LAURA DOOLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20100916.ANTEL.01/RIW