FNUS75 KRIW 230110
FWSRIW

SPOT FORECAST FOR ARTHUR 2...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
710 PM MDT SUN AUG 22 2010

FORECAST IS BASED ON REQUEST TIME OF 1601 MDT ON AUGUST 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SOME LINGERING SHOWERS AND LOW CLOUDS WILL LIKELY LINGER
OVER THE AREA BEHIND TONIGHT'S TROUGH/FRONTAL PASSAGE.  THE AIRMASS WILL
DRY OUT AND STABILIZE THROUGH THE AFTERNOON.  SURFACE HIGH
PRESSURE WILL BUILD OVER THE AREA MONDAY NIGHT WITH NEAR FREEZING
TEMPERATURES LIKELY TUESDAY MORNING.

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

FORECASTER...MEUNIER

.MONDAY...
SKY/WEATHER.........MOSTLY CLOUDY THROUGH 0900 (70-80 PERCENT) WITH LOW
                    CLOUDS AND FOG POSSIBLE. ISOLATED RAIN
                    SHOWERS MAINLY IN THE MORNING. DECREASING
                    CLOUDS IN THE AFTERNOON (TO 20-30 PERCENT).
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........28-31 PERCENT.
20 FOOT WINDS.......WEST TO 4 TO 8 MPH GUSTS TO 15 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH GUSTS TO AROUND 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 5000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 MPH.
SMOKE DISPERSAL.....POOR (15000 KNOT-FT) INCREASING TO GOOD
                    (75000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...CLEAR. LOWS IN THE LOWER 30S. WINDS GENERALLY
LESS THAN 10 MPH.
.TUESDAY...CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER
70S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 70S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 70. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...BART HOAG
REASON FOR REQUEST...WILDFIRE
.TAG 20100822.ARTHU.02/RIW