Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 242336
FWSRIW

SPOT FORECAST FOR 5L4 FIRE...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
536 PM MDT MON AUG 24 2015

FORECAST IS BASED ON REQUEST TIME OF 1637 MDT ON AUGUST 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SHOWERS OR STORMS ARE EXPECTED TO STAY SOUTH OF THE
FIRE AREA THIS EVENING. DRY WEATHER AND THE WIND DIMINISHING AFTER
SUNSET. TUESDAY WILL SEE ISOLATED SHOWERS OR STORMS AFTER 1400 UNTIL
2100. OUTFLOW WIND GUSTS TO 40 MPH WILL BE THE MAIN THREAT FROM
THIS ACTIVITY TUESDAY AFTERNOON AND EVENING. RELATIVE HUMIDITY WILL BE
LOW TUESDAY AFTERNOON.  WEDNESDAY WILL SEE A BETTER COVERAGE OF
AFTERNOON AND EVENING SHOWERS AND STORMS. EXPECT MORE CLOUDS
WEDNESDAY AFTERNOON AND EVENING ALONG WITH HIGHER RELATIVE HUMIDITY.

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

FORECASTER...AR

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY UNTIL SUNSET. THEN MOSTLY CLEAR.
MIN TEMPERATURE.....42-46.
MAX HUMIDITY........60-65 PERCENT.

20 FOOT WINDS.......SOUTH TO SOUTHWEST AT 5 TO 9 MPH UNTIL SUNSET.
                    THEN WIND BECOMING VARIABLE AT 3 TO 6 MPH
                    AFTER SUNSET.

RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 8 TO 12 MPH UNTIL SUNSET.
                    THEN SOUTH TO SOUTHWEST AT 6 TO 10 MPH AFTER
                    SUNSET.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 500-1000 FT AGL AFTER MIDNIGHT.

TRANSPORT WINDS.....SOUTHWEST AT 20 MPH UNTIL SUNSET.
                    SOUTH TO SOUTHWEST AT 5 TO 10 MPH BY MIDNIGHT.

SMOKE DISPERSAL.....VERY GOOD UNTIL SUNSET...THEN DECREASING TO FAIR
                    AND THEN BECOMING POOR AFTER MIDNIGHT.

.TUESDAY...

SKY/WEATHER.........MOSTLY SUNNY THROUGH NOON.
                    INCREASING CLOUDS IN THE AFTERNOON.
                    ISOLATED RAIN SHOWERS AND THUNDERSTORMS
                    AFTER 1400.
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........20-23 PERCENT.

20 FOOT WINDS.......SOUTH TO SOUTHWEST AT 5 TO 8 MPH UNTIL NOON.
                    THEN SOUTH TO SOUTHWEST AT 7 TO 11 MPH WITH
                    GUSTS TO 15 MPH AFTER NOON.

                    GUSTY AND ERRATIC WIND GUSTS TO 40 MPH
                    EXPECTED NEAR SHOWERS OR THUNDERSTORMS.

RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 6 TO 10 MPH UNTIL NOON.
                    THEN SOUTH TO SOUTHWEST 10 TO 15 MPH WITH GUSTS
                    TO 20 MPH AFTER NOON.

LAL.................1 UNTIL 1400...THEN LAL OF 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 9000-10000 FT AGL IN THE AFTERNOON.

TRANSPORT WINDS.....SOUTH TO SOUTHWEST 5 TO 10 MPH UNTIL NOON.
                    SOUTHWEST AT 15 MPH AFTER NOON.

SMOKE DISPERSAL.....BECOMING GOOD BY 1200...THEN VERY GOOD BY 1500.


.TUESDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS OR STORMS
                    UNTIL 2100.
MIN TEMPERATURE.....47-50.
MAX HUMIDITY........63-66 PERCENT.

20 FOOT WINDS.......SOUTH TO SOUTHWEST AT 5 TO 10 MPH UNTIL SUNSET.
                    THEN SOUTH TO SOUTHEAST AT 3 TO 6 MPH AFTER
                    SUNSET.

                    GUSTY AND ERRATIC WIND GUSTS TO 40 MPH
                    EXPECTED NEAR SHOWERS OR THUNDERSTORMS.

RIDGE TOP WINDS.....SOUTHWEST AT 7 TO 12 MPH UNTIL SUNSET.
                    THEN SOUTH TO SOUTHEAST AT 5 TO 10 MPH.

LAL.................2 UNTIL 2100...THEN LAL OF 1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......DECREASING TO 1000-1500 FT AGL AFTER MIDNIGHT.

TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL SUNSET.
                    THEN SOUTH TO SOUTHEAST AT 5 TO 10 MPH BY
                    MIDNIGHT.

SMOKE DISPERSAL.....VERY GOOD UNTIL SUNSET...THEN FAIR BY
                    MIDNIGHT AND THEN POOR AFTER MIDNIGHT.

.FORECAST DAYS 3 THROUGH 5...

.WEDNESDAY...
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS IN THE UPPER 60S. SOUTH TO SOUTHWEST WIND
AROUND 10 MPH IN THE AFTERNOON.

.THURSDAY...
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS
THAN 10 MPH.

.FRIDAY...
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS. LOWS IN
THE MID 40S. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS THAN
10 MPH.

$$
FORECASTER...ROSS
REQUESTED BY...IC ZACK ALLEN
TYPE OF REQUEST...WILDFIRE
.TAG 20150824.5L4FI.01/RIW



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