FNUS75 KRIW 111431
FWSRIW

SPOT FORECAST FOR LOWER GROS VENTRE RX...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
831 AM MDT WED APR 11 2012

FORECAST IS BASED ON IGNITION TIME OF 0825 MDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...TODAY WILL START BE DRY THROUGH NOON.
THEN DURING THE AFTERNOON SHOWERS WILL DEVELOP OVER THE HIGHER
MOUNTAINS AND MOVE NORTH THROUGH SUNSET. ISOLATED THUNDERSTORMS
CANNOT BE RULED OUT FROM 200 PM UNTIL 800 PM. THE WIND WILL INCREASE
IN THE AFTERNOON AHEAD OF A APPROACHING COLD FRONT. THIS FRONT WILL
MOVE THROUGH THE BURN AREA BETWEEN 600 PM AND 900 PM THIS EVENING.
COLDER AIR WILL MOVE IN AND CHANGE RAIN SHOWERS TO RAIN AND SNOW
SHOWERS  NEAR OR AFTER MIDNIGHT. THEN THURSDAY LOOKS COLDER WITH A
CHANCE OR RAIN OR SNOW SHOWERS.

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

FORECASTER...HATTINGS

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1100(40-50 PERCENT) THEN
                    BECOMING MOSTLY CLOUDY. ISOLATED SHOWERS
                    AND THUNDERSTORMS AFTER 1300.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......VARIABLE 4 TO 8 MPH UNTIL 1200 THEN BECOMING
                    SOUTH TO SOUTHWEST AT 8 TO 16 MPH WITH GUSTS
                    TO 20 TO 25 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR SHOWERS AND THUNDERSTORMS IN THE
                    AFTERNOON WITH GUSTS TO 30 MPH.
RIDGE TOP WINDS.....VARIABLE 4 TO 8 MPH UNTIL 1200 THEN BECOMING
                    SOUTH AT 10 TO 20 MPH WITH GUSTS TO 25 MPH AFTER
                    1200. ERRATIC WIND GUSTS NEAR SHOWERS AND
                    THUNDERSTORMS UP TO 35 MPH.
LAL.................1 UNTIL 1300...THEN 2.
CHC OF WETTING RAIN.6 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......300-1300 FT AGL INCREASING TO 4500-5500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH INCREASING TO 15 TO 25 MPH
                    IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (30000 KNOT-FT) INCREASING TO VERY GOOD
                    (130000 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). ISOLATED
                    SHOWERS AND THUNDERSTORMS UNTIL 2200. SCATTERED
                    RAIN AND SNOW SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....28-32.
MAX HUMIDITY........80-85 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS AROUND 10 TO 15 MPH WITH GUSTS TO
                    AROUND 25 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS UNTIL 2200.
RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AROUND 15 TO 25 MPH SHIFTING TO
                    THE SOUTHWEST AFTER 2000.
LAL.................2 UNTIL 2200...THEN 1.
CHC OF WETTING RAIN.40 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4300-5300 FT AGL DECREASING TO 2100-2600 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH 15 TO 30 MPH BECOMING SOUTHWEST 15 TO 25
                    MPH AFTER 2100.
SMOKE DISPERSAL.....VERY GOOD (135000 KNOT-FT) DECREASING TO FAIR
                    (42000 KNOT-FT) AFTER MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........CLOUDY (75-85 PERCENT). SCATTERED RAIN AND SNOW
                    SHOWERS.
MAX TEMPERATURE.....40-45.
MIN HUMIDITY........35-40 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
                    AROUND 20 MPH.
RIDGE TOP WINDS.....WEST TO SOUTHWEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3700-4700 FT AGL INCREASING TO 6000-7000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 TO 25 MPH.
SMOKE DISPERSAL.....GOOD TO VERY GOOD (85200-120600 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND SNOW
SHOWERS IN THE EVENING...THEN ISOLATED SNOW SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 20S. SOUTHWEST WINDS AROUND 10 MPH.
.FRIDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS IN THE MID 20S. HIGHS IN THE MID 40S. WINDS GENERALLY LESS
THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. WINDS GENERALLY LESS
THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. LOWS
IN THE UPPER 20S. HIGHS IN THE LOWER 40S. WINDS GENERALLY LESS
THAN 10 MPH.

$$

FORECASTER...HATTINGS
REQUESTED BY...MCFARLAND
REASON FOR REQUEST...PRESCRIBED
.TAG 20120411.LOWER.01/RIW