FNUS75 KRIW 190930
FWSRIW

SPOT FORECAST FOR GREEN...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
330 AM MDT MON AUG 19 2013

FORECAST IS BASED ON REQUEST TIME OF 2014 MDT ON AUGUST 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...DRY CONDITIONS TODAY WITH WARM TEMPERATURES AND
LOW AFTERNOON HUMIDITY. WIND SPEEDS AND DIRECTION WILL BE
SIMILAR TO SUNDAY CONDITIONS. DRY TONIGHT WITH LIGHT WIND.
TUESDAY WILL START OUT DRY THROUGH 1200...THEN CLOUDS WILL
INCREASE WITH ISOLATED SHOWERS AND STORMS IN THE AREA AFTER
1400 UNTIL 2100 TUESDAY EVENING. OUTFLOW WIND GUSTS TO 45 MPH
AND LIGHTNING STRIKES WILL BE THE MAIN THREATS. RAINFALL WILL
BE LIGHT AND VERY LOCALIZED. WEDNESDAY WILL SEE MORE COVERAGE
OF STORMS WITH MORE CLOUDS AND HIGHER RELATIVE HUMIDITY IN
THE AFTERNOON.

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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........SUNNY UNTIL 1200. THEN BECOMING PARTLY CLOUDY.
MAX TEMPERATURE.....74-77 AT 9000 FEET.
MIN HUMIDITY........17-21 PERCENT AT 9000 FEET.

20 FOOT WINDS.......UPSLOPE/UPVALLEY AT 5 TO 8 MPH UNTIL 1300.
                    WEST TO SOUTHWEST AT 6 TO 10 MPH AFTER 1300
                    WITH GUSTS TO 13 MPH.

RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1300.
                    WEST TO SOUTHWEST AT 10 TO 15 MPH AFTER 1300
                    WITH GUSTS TO 18 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 8500-9500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1300.
                    WEST AT 15 TO 20 MPH AFTER 1300.
SMOKE DISPERSAL.....INCREASING TO VERY GOOD TO EXCELLENT
                    IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....46-49 AT 9000 FEET.
MAX HUMIDITY........48-51 PERCENT AT 9000 FEET.

20 FOOT WINDS.......WEST TO SOUTHWEST AT 5 TO 10 MPH UNTIL 2000.
                    WIND BECOMING BECOMING DOWNSLOPE/DOWNVALLEY
                    AT 4 TO 7 MPH AFTER 2000.

RIDGE TOP WINDS.....WEST TO SOUTHWEST AT 10 TO 15 MPH UNTIL 2000.
                    WEST TO SOUTHWEST AT 5 TO 10 MPH AFTER 2000.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......TO 1000-2000 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 2100.
                    WEST TO SOUTHWEST AT 5 TO 10 MPH AFTER 2100.
SMOKE DISPERSAL.....DECREASING TO POOR AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING. CLOUDS
                    INCREASING IN THE AFTERNOON. ISOLATED SHOWERS
                    AND THUNDERSTORMS AFTER 1400.
MAX TEMPERATURE.....71-75 AT 9000 FEET.
MIN HUMIDITY........21-25 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY AT 5 TO 8 MPH UNTIL 1300.
                    WEST TO SOUTHWEST AT 6 TO 10 MPH AFTER 1300
                    WITH GUSTS TO 13 MPH.

                    GUSTY AND ERRATIC WINDS TO 45 MPH NEAR
                    SHOWERS OR STORMS.

RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1300.
                    WEST TO SOUTHWEST AT 10 TO 15 MPH AFTER 1300
                    WITH GUSTS TO 20 MPH.

LAL.................1 UNTIL 1400...THEN 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7000-8000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1300.
                    WEST TO SOUTHWEST AT 10 TO 15 MPH AFTER 1300.
SMOKE DISPERSAL.....INCREASING TO GOOD TO VERY GOOD IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.TUESDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS UNTIL 2100. LOWS IN THE MID TO UPPER 40S.
WINDS GENERALLY LESS THAN 10 MPH AFTER SUNSET...GUSTY WIND
TO 40 MPH NEAR STORMS IN THE EARLY EVENING.

.WEDNESDAY...BECOMING MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON AND EVENING. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH...GUSTY TO 40 MPH NEAR STORMS.

.THURSDAY...PARTLY CLOUDY.  SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON AND EVENING. LOWS 40 TO 45.
HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH...GUSTY
NEAR STORMS.

.FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON AND EVENING. LOWS 40 TO 45.
HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH...GUSTY
NEAR STORMS.

$$

FORECASTER...ROSS
REQUESTED BY...LOOKOUT
REASON FOR REQUEST...WILDFIRE
.TAG 20130818.GREEN.01/RIW