FNUS75 KRIW 230254
FWSRIW

SPOT FORECAST FOR BULL...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
854 PM MDT SUN AUG 22 2010

FORECAST IS BASED ON REQUEST TIME OF 1959 MDT ON AUGUST 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...LOW CLOUDS AND FOG WILL LIKELY LINGER THROUGH AROUND 1100L
WITH THE LOWER AIRMASS REMAINING NEAR SATURATED.  A WEST NORTHWEST
FLOW WITH CLEARING SKIES IS EXPECTED IN THE AFTERNOON.  SURFACE HIGH
PRESSURE WILL BUILD IN MONDAY NIGHT WITH CLEAR SKIES...LIGHT WIND
AND NEAR FREEZING TEMPERATURES EXPECTED.  HIGH PRESSURE...CLEAR SKIES
AND LIGHT WIND WILL PREVAIL TUESDAY WITH TEMPERATURES TRENDING WARMER
AND RELATIVE HUMIDITY TRENDING DRIER.


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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........AREAS OF LOW CLOUDS AND FOG IN THE MORNING...
                    DISSIPATING AROUND 1100L.  THEN BECOMING
                    MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....55-58.
MIN HUMIDITY........29-32 PERCENT.
20 FOOT WINDS.......WEST SOUTHWEST 5-9 MPH BECOMING WEST NORTHWEST
                    8 TO 13 MPH WITH GUSTS TO 20-25 MPH AROUND 1400L.
RIDGE TOP WINDS.....WEST 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2900-3900 FT AGL INCREASING TO 5700-6700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 17 TO 25 MPH.
SMOKE DISPERSAL.....FAIR (57700 KNOT-FT) INCREASING TO VERY GOOD
                    (121200 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....33-37.
MAX HUMIDITY........63-68 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS 9 TO 13 MPH SHIFTING TO THE
                    NORTHEAST 5-9 MPH AFTER MIDNIGHT.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH SHIFTING TO THE
                    NORTHEAST 5-9 MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3800-4800 FT AGL DECREASING TO 1100-1600 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH SHIFTING TO THE
                    NORTHEAST 5 TO 10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....GOOD (84500 KNOT-FT) DECREASING TO POOR (19900
                    KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....63-66.
MIN HUMIDITY........21-24 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY OR EAST NORTHEAST 5-9 MPH.
                    GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH SHIFTING TO THE SOUTH 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.......2500-3500 FT AGL INCREASING TO 5300-6300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (37600-70600 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLEAR. LOWS IN THE LOWER 40S. WINDS GENERALLY
LESS THAN 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...TIDC
REASON FOR REQUEST...WILDFIRE
.TAG 20100822.BULL_.03/RIW