FNUS75 KRIW 221134
FWSRIW

SPOT FORECAST FOR LOWER GROS VENTRE RX...TIDC
NATIONAL WEATHER SERVICE RIVERTON WY
534 AM MDT WED SEP 22 2010

FORECAST IS BASED ON IGNITION TIME OF 1800 MDT ON SEPTEMBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER TROUGH OF LOW PRESSURE MOVING ACROSS
SOUTHERN/CENTRAL CALIFORNIA THIS MORNING WILL LIFT NORTHEAST
ACROSS THE GREAT BASIN THIS AFTERNOON...ACROSS THE ROCKIES
TONIGHT. THE RESULT WILL BE INCREASING HIGH CLOUD COVER THIS MORNING.
ISOLATED SHOWERS AND THUNDERSTORMS WILL BEGIN DEVELOPING IN THE
AFTERNOON WITH THE SHOWERS AND ISOLATED THUNDERSTORMS MOST NUMEROUS
DURING THE EVENING. TEMPERATURES WILL TREND SLIGHTLY WARMER BUT
DEWPOINTS WILL RISE IN THE AFTERNOON RESULTING IN RELATIVE
HUMIDITY TRENDING HIGHER. A COOL AND DRY WESTERLY FLOW WILL
PREVAIL ON THURSDAY.


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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY THIS MORNING (40-50 PERCENT.  INCREASING CLOUDS
                    AFTER 1400 WITH ISOLATED SHOWERS AND THUNDERSTORMS DEVELOPING
                    AND BECOMING MORE NUMEROUS 1600-1800.
MAX TEMPERATURE.....AROUND 70 AT 7500 FEET...62-64 AT 8600 FEET.
MIN HUMIDITY........22-25 PERCENT.

20 FOOT WINDS.......EAST SOUTHEAST 4 TO 7 MPH BECOMING SOUTH SOUTHWEST
                    AROUND 1000 AND THEN SOUTHWEST AROUND 10 MPH WITH
                    GUSTS 15 TO 20 MPH IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH IN THE MORNING BECOMING
                    SOUTHWEST 15 TO 20 MPH IN THE AFTERNOON.
LAL.................1 UNTIL 1400...THEN 2.

CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000-2000 FT AGL THROUGH 1000...INCREASING TO
                    7400-8400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 10 MPH IN THE MORNING...SOUTH SOUTHWEST
                    20-25 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (20000 KNOT-FT) INCREASING TO VERY GOOD
                    (115600 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SCATTERED SHOWERS AND
                    ISOLATED THUNDERSTORMS IN THE EVENING. SHOWERS TAPERING
                    OFF TO ISOLATED AFTER MIDNIGHT.
MIN TEMPERATURE.....36-39.
MAX HUMIDITY........78-81 PERCENT.
20 FOOT WINDS.......SOUTHWEST AROUND 10 MPH WITH GUSTS 15 TO 20 MPH
                    THROUGH 1900 THEN BECOMING SOUTH 4 TO 8 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH BECOMING WEST LATE EVENING.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......7500-8500 FT AGL DECREASING TO 2800-3800 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST TO SOUTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....VERY GOOD (107400 KNOT-FT) DECREASING TO POOR
                    (27100 KNOT-FT) AFTER MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
                    MOSTLY SUNNY (15-25 PERCENT) BY AFTERNOON.
MAX TEMPERATURE.....60-63.
MIN HUMIDITY........26-29 PERCENT.
20 FOOT WINDS.......WEST 4-7 MPH INCREASING TO 10 MPH WITH GUSTS 15 TO 20 MPH
                    AROUND 1500.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH INCREASING TO AROUND 20 MPH
                    LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2100-3100 FT AGL INCREASING TO 5200-6200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 10 MPH INCREASING TO NEAR 20 MPH IN THE
                    AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (31300-80700 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...STRAUBURG
REASON FOR REQUEST...PRESCRIBED
.TAG 20100921.LOWER.01/RIW