FNUS75 KRIW 230912
FWSRIW

SPOT FORECAST FOR ANTELOPE...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
312 AM MDT THU SEP 23 2010

FORECAST IS BASED ON REQUEST TIME OF 2047 MDT ON SEPTEMBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

ISOLATED SHOWERS ARE STILL POSSIBLE THIS MORNING OVER THE FIRE
SITE. OTHERWISE...A COOL DAY IS EXPECTED WITH RELATIVELY HIGH
MINIMUM RELATIVE HUMIDITY THIS AFTERNOON. WINDS ARE EXPECTED TO BE
BREEZY FROM THE SOUTHWEST TO WEST THIS AFTERNOON. DRY CONDITIONS AND
A WARMING TREND IS EXPECTED THROUGH THE WEEKEND. BREEZY SOUTHWEST
TO WEST WINDS ARE EXPECTED ONCE AGAIN FRIDAY AFTERNOON...BUT WINDS ARE
EXPECTED TO BE MUCH LIGHTER ON SATURDAY AND SUNDAY. LOOKS LIKE
THIS ABOVE AVERAGE AND DRY PATTERN WILL CONTINUE THROUGH AT LEAST
THE END OF THE MONTH.

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

FORECASTER...MURRELL/MEUNIER

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY THROUGH 1000 (80 PERCENT)...BECOMING
                    MOSTLY SUNNY (20 PERCENT) IN THE AFTERNOON. ISOLATED
                    RAIN SHOWERS THROUGH 1000.
MAX TEMPERATURE.....54-58.
MIN HUMIDITY........AROUND 30 PERCENT.
20 FOOT WINDS.......VARIABLE 3-6 MPH...BECOMING SOUTHWEST 5-10 MPH
                    BETWEEN 1000 AND NOON...THEN BECOMING WEST
                    SOUTHWEST 10-15 MPH AROUND 1400. GUSTS 20-25 MPH
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST SOUTHWEST AROUND 10 MPH INCREASING TO
                    AROUND 20 MPH AROUND 1400.
LAL.................1.
CHC OF WETTING RAIN.2 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL INCREASING TO 5600 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO 20-25 MPH
                    IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (30200 KNOT-FT) INCREASING TO GOOD (97900
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15 PERCENT).
MIN TEMPERATURE.....30-35.
MAX HUMIDITY........70 PERCENT.
20 FOOT WINDS.......WEST SOUTHWEST 5-10 MPH...BECOMING SOUTH 4-8
                    MPH AROUND 2000. GUSTS 15-20 MPH THROUGH 2000.
RIDGE TOP WINDS.....SOUTHWEST 10-15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5400 FT AGL DECREASING TO 1500 FT AGL
                    BY 2100.
TRANSPORT WINDS.....SOUTHWEST 10-15 MPH.
SMOKE DISPERSAL.....VERY GOOD (104200 KNOT-FT) DECREASING TO POOR
                    (34300 KNOT-FT) BY 2000.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....58-62.
MIN HUMIDITY........AROUND 25 PERCENT.
20 FOOT WINDS.......SOUTH 4-8 MPH...BECOMING SOUTHWEST 5-10 MPH
                    AROUND 1100...THEN WEST SOUTHWEST 10-15 MPH
                    AROUND 1400. GUSTS AROUND 25 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH...BECOMING WEST AROUND
                    20 MPH AROUND 1400.  GUSTS TO 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 6300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH...BECOMING WEST 20-25
                    MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (36400 KNOT-FT) INCREASING TO VERY GOOD
                    (113000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.SATURDAY...CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID 70S.
WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.

.MONDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID
70S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL/MEUNIER
REQUESTED BY...LAURA DOOLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20100922.ANTEL.02/RIW