FNUS75 KRIW 180857
FWSRIW

SPOT FORECAST FOR LOST LAKE...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
257 AM MDT SUN AUG 18 2013

FORECAST IS BASED ON REQUEST TIME OF 2128 MDT ON AUGUST 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

VERY WARM AND MAINLY DRY CONDITIONS WILL OCCUR TODAY AND MONDAY ACROSS
THE WILDFIRE AREA. WINDS OVER THE NEXT COUPLE OF DAYS...WILL
GENERALLY BE WEST TO SOUTHWEST AND BREEZY AT TIMES. THERE COULD BE
VERY ISOLATED AFTERNOON AND EVENING THUNDERSTORMS BOTH DAYS...BUT
A BETTER SHOT AT THUNDERSTORMS WILL OCCUR TUESDAY AND WEDNESDAY AS
MOISTURE AND A WEAK DISTURBANCE OVERSPREAD THE REGION.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (25 PERCENT) IN THE MORNING.
                    PARTLY CLOUDY (40 PERCENT) WITH VERY ISOLATED
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....79.
MIN HUMIDITY........13 PERCENT.
20 FOOT WINDS.......UPSLOPE 4-8 MPH...BECOMING WEST TO SOUTHWEST
                    5-10 MPH BY AROUND NOON. GUSTS 15-25 MPH IN
                    THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR ANY THUNDERSTORMS.
RIDGE TOP WINDS.....WEST 10-15 MPH. GUSTS TO 25 MPH.
LAL.................1 UNTIL NOON...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......9000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15-20 MPH.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). VERY ISOLATED
                    SHOWERS AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........40 PERCENT.
20 FOOT WINDS.......WEST TO SOUTHWEST 3-6 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR ANY THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 5-10 MPH.
LAL.................2 UNTIL 9 PM...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 5-10 MPH.
SMOKE DISPERSAL.....DECREASING TO POOR BY 9 PM.

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (40-50 PERCENT) WITH A VERY
                    ISOLATED THUNDERSTORM POSSIBLE IN THE AFTERNOON.
MAX TEMPERATURE.....79.
MIN HUMIDITY........18 PERCENT.
20 FOOT WINDS.......UPSLOPE 4-8 MPH...BECOMING WEST TO SOUTHWEST
                    5-10 MPH BY AROUND NOON. GUSTS TO 25 MPH. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR ANY THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 10-15 MPH...BECOMING WEST 10-15 MPH IN
                    THE AFTERNOON.
LAL.................1 UNTIL NOON...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......8900 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 10-15 MPH INCREASING TO WEST
                    AROUND 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD.

.FORECAST DAYS 3 THROUGH 5...

.MONDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. WINDS
GENERALLY LESS THAN 10 MPH.

.TUESDAY...PARTLY CLOUDY WITH WIDELY SCATTERED SHOWERS AND THUNDERSTORMS.
HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS AROUND 70. WINDS GENERALLY LESS THAN
10 MPH.

.THURSDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS AROUND 70. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...TIM HAAS
REASON FOR REQUEST...WILDFIRE
.TAG 20130817.LOSTL.01/RIW