Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 242250
FWSRIW

SPOT FORECAST FOR SIMPSON...CODY DISPATCH
NATIONAL WEATHER SERVICE RIVERTON WY
450 PM MDT WED AUG 24 2016

FORECAST IS BASED ON REQUEST TIME OF 1629 MDT ON AUGUST 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...COOLER TEMPERATURES WITH MUCH HIGHER RELATIVE HUMIDITY
WILL CONTINUE TONIGHT AND THURSDAY WITH WIDESPREAD SHOWERS AND SCATTERED
THUNDERSTORMS WITH AREAS OF MODERATE TO HEAVY RAIN AND SMALL HAIL.
EXPECT LIGHT SNOW ACCUMULATION OF 1 TO 2 INCHES TONIGHT.

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

FORECASTER...LIPSON

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). THROUGH 1800,
                    AN AREA OF SCATTERED SHOWERS AND THUNDERSTORMS
                    WILL GRAZE THE FIRE AREA TO THE NORTH. OTHERWISE,
                    AREAS OF SMOKE THROUGH THE NIGHT. SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING. SCATTERED SNOW
                    SHOWERS THROUGH THE NIGHT.
MIN TEMPERATURE.....31-34.
MAX HUMIDITY........90-93 PERCENT.
20 FOOT WINDS.......EAST WINDS 8 TO 14 MPH WITH GUSTS TO
                    AROUND 25 MPH UNTIL EARLY MORNING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
                    EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS LATE IN THE EVENING.
RIDGE TOP WINDS.....SOUTHEAST 15 TO 20 MPH.
LAL.................4 UNTIL 2100...THEN 3 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.13 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5000 FT AGL DECREASING TO 1100 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTHEAST 16 TO 23 MPH.
SMOKE DISPERSAL.....GOOD (96900 KNOT-FT) DECREASING TO POOR (16600
                    KNOT-FT) AFTER MIDNIGHT.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). AREAS OF SMOKE
                    EARLY IN THE MORNING. SCATTERED SNOW SHOWERS
                    EARLY IN THE MORNING...THEN SCATTERED RAIN
                    SHOWERS IN THE LATE MORNING AND AFTERNOON.
                    SCATTERED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....44-47.
MIN HUMIDITY........61-63 PERCENT.
20 FOOT WINDS.......EAST WINDS5 TO 9 MPH,SHIFTING TO THE SOUTH AT
                    10 MPH BY 1200. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH.
LAL.................1 UNTIL 1200...THEN 4.
CHC OF WETTING RAIN.37 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1600 FT AGL INCREASING TO 6700 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 14 MPH.
SMOKE DISPERSAL.....POOR (6200-37500 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS IN
THE EVENING. LOWS IN THE LOWER 30S. WINDS GENERALLY LESS THAN
10 MPH.
.FRIDAY...
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON AND EVENING. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER
50S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WEST
WINDS AROUND 12 MPH.
.SUNDAY...
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. WEST
WINDS AROUND 10 MPH.
.MONDAY...
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
AROUND 40. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN
10 MPH.

$$
FORECASTER...LIPSON
REQUESTED BY...SHANNON MYERS
TYPE OF REQUEST...WILDFIRE
.TAG 20160822.SIMPS.01/RIW



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