FNUS75 KRIW 210300
FWSRIW

SPOT FORECAST FOR ANTELOPE FIRE...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
900 PM MDT MON SEP 20 2010

FORECAST IS BASED ON REQUEST TIME OF 1248 MDT ON SEPTEMBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SOUTHWEST FLOW WILL PERSIST AS THE NEXT PACIFIC TROUGH SLOWLY
MOVES ONSHORE THROUGH WEDNESDAY. THIS WILL RESULT IN SOUTH TO
SOUTHWEST GUSTY WINDS OVER THE ANTELOPE FIRE. TEMPERATURES WILL BE
MILD...WITH RH'S IN THE MID TO UPPER 20S. THE GUSTY WINDS PERSIST
INTO WEDNESDAY AS WELL WITH WARMER TEMPS AND LOWER RH'S.


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

FORECASTER...T.BAKER

.REST OF TONIGHT...
.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT)
MIN TEMPERATURE.....31-34.
MAX HUMIDITY........70-75 PERCENT.
20 FOOT WINDS.......SOUTH TO SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP
                    TO 25 THROUGH 2200...THEN DECREASING TO 5 TO 10 MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH GUSTS TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5000 FT AGL DECREASING TO 500 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 25 MPH.
SMOKE DISPERSAL.....VERY GOOD (125000 KNOT-FT) DECREASING TO POOR
                    (12500 KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....60-63.
MIN HUMIDITY........25-30 PERCENT.
20 FOOT WINDS.......SOUTH TO SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP
                    TO 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH GUSTS TO 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL INCREASING TO 5000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 25 MPH.
SMOKE DISPERSAL.....POOR (12500 KNOT-FT) INCREASING TO VERY GOOD
                    (125000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 30S. SOUTH WINDS
AROUND 10 MPH.
.WEDNESDAY...MOSTLY CLOUDY. A CHANCE OF SHOWERS WITH
POSSIBLE THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE LOWER 30S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN
10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...T.BAKER
REQUESTED BY...LAURA DOOLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20100920.ANTEL.02/RIW