Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 240950
FWSRIW

SPOT FORECAST FOR FAWN...WY-YNP
NATIONAL WEATHER SERVICE RIVERTON WY
350 AM MDT WED AUG 24 2016

FORECAST IS BASED ON REQUEST TIME OF 2047 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LEVEL LOW PRESSURE SYSTEM OVER WESTERN
MONTANA WILL DROP DOWN INTO YELLOWSTONE NATIONAL PARK THIS
EVENING. A COOLER EAST NORTHEAST FLOW WILL BRING HIGHER RELATIVE
HUMIDITY TO THE AREA TODAY ALONG WITH ISOLATED AFTERNOON AND
EVENING SHOWERS AND THUNDERSTORMS. LOW CLOUDS OR FOG WILL LIKELY
FORM OVER MUCH OF THE PARK LATE TONIGHT AND THURSDAY MORNING WITH
TERRAIN OBSCURATIONS LIKELY RESTRICTING ANY FLIGHT OPERATIONS.
CHANCES OF RECEIVING WETTING RAIN OR POSSIBLY SOME SNOW ON THE
PEAKS INCREASE THURSDAY AND FRIDAY AS THE COOL AND UNSETTLED
PATTERN WILL REMAIN OVER THE AREA.

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

FORECASTER...MEUNIER

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT) EARLY.  BECOMING PARTLY
                    CLOUDY (50-60 PERCENT) IN THE LATE MORNING AND AFTERNOON.
                    ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....52-60.
MIN HUMIDITY........35-38 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY OR EAST NORTHEAST 5-10 MPH.
                    GUSTS 15-20 MPH IN THE LATE MORNING AND AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH...INCREASING TO 15 TO 20 MPH
                    IN THE AFTERNOON.

LAL.................1 UNTIL 1300...THEN 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...INCREASING TO
                    4000 TO 5000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR (34400-38300 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING. AREAS OF
                    LOW CLOUDS AND FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....29-32.
MAX HUMIDITY........92-95 PERCENT.

20 FOOT WINDS.......EAST NORTHEAST AROUND 10 MPH.  GUSTS 15 TO 20 MPH
                    IN THE EVENING.  GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....NORTHEAST 15 TO 20 MPH...BECOMING EAST AROUND
                    10 MPH AFTER MIDNIGHT.

LAL.................2 UNTIL 2100...THEN 1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2700-3700 FT AGL EARLY EVENING DECREASING TO
                    BELOW 1000 FEET AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH EARLY EVENING...EAST
                    5 TO 10 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). AREAS OF LOW
                    CLOUDS AND FOG UNTIL 1000.  SCATTERED SHOWERS
                    AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....49-57.
MIN HUMIDITY........42-45 PERCENT.

20 FOOT WINDS.......EAST NORTHEAST 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....EAST 5-10 MPH IN THE MORNING...BECOMING NORTH
                    10 TO 15 MPH IN THE AFTERNOON.

LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......BELOW 1000 FEET UNTIL 0900...INCREASING TO
                    6500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 5 TO 7 MPH IN THE MORNING BECOMING
                    SOUTHWEST AROUND 5 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (16800-23700 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...
MOSTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE EVENING.
LOWS IN THE LOWER 30S. WINDS GENERALLY LESS THAN 10 MPH.

.FRIDAY...
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S.
SOUTHWEST WINDS AROUND 11 MPH.

.SUNDAY...
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE UPPER 30S.
HIGHS IN THE UPPER 60S. SOUTHWEST WINDS 10 TO 15 MPH.

$$
FORECASTER...MEUNIER
REQUESTED BY...FIRE DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 20160823.FAWN_.01/RIW



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