Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 241413
FWSRIW

SPOT FORECAST FOR COTTONWOOD II RX...USFS - BTNF
NATIONAL WEATHER SERVICE RIVERTON WY
813 AM MDT FRI APR 24 2015

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

COOLING PATTERN IN PLACE WITH INCREASING MOISTURE AND CHANCES FOR
PRECIPITATION CLOSE TO IGNITION TIME...BOTH LIQUID AND THEN FROZEN
TONIGHT...TODAY AND LASTING THROUGH THE WEEKEND. THE PRECIPITATION
WILL COME IN THE FORM OF RAIN AND SNOW SHOWERS AND ISOLATED AFTERNOON
AND EVENING THUNDERSTORMS...BOTH OF WHICH IMPLY IRRATIC WIND GUSTS 30
TO 40 MPH...ESPECIALLY AFTER NOON TODAY.

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

FORECASTER...BRAUN

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). ISOLATED RAIN
                    SHOWERS EARLY IN THE MORNING. ISOLATED SNOW
                    SHOWERS IN THE MORNING. SCATTERED RAIN SHOWERS
                    AND ISOLATED THUNDERSTORMS IN THE LATE MORNING
                    AND AFTERNOON.
MAX TEMPERATURE.....AROUND 50.
MIN HUMIDITY........45-55 PERCENT.
20 FOOT WINDS.......WINDS BECOMING WEST 10 TO 15
                    MPH WITH HIGHER GUSTS IN THE AFTERNOON. GUSTY
                    AND ERRATIC WINDS TO 35 MPH EXPECTED NEAR
                    THUNDERSTORMS IN THE LATE MORNING AND THROUGH
                    THE AFTERNOON.
RIDGE TOP WINDS.....WEST TO WEST SOUTHWEST 15 TO 20 MPH.
LAL.................1 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.50 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2800-3800 FT AGL INCREASING TO 6000-6500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 23 MPH.
SMOKE DISPERSAL.....FAIR (43600 KNOT-FT) INCREASING TO GOOD (94800
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (70-90 PERCENT). SCATTERED RAIN
                    SHOWERS AND ISOLATED THUNDERSTORMS IN THE
                    EVENING. SCATTERED SNOW SHOWERS THROUGH THE
                    NIGHT.
MIN TEMPERATURE.....24-27.
MAX HUMIDITY........90-97 PERCENT.
20 FOOT WINDS.......WEST WINDS 8 TO 13 MPH WITH GUSTS TO AROUND 25
                    MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS EARLY IN THE EVENING.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
LAL.................2 UNTIL 2100...THEN 1.
CHC OF WETTING RAIN.50 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3500-4500 FT AGL DECREASING TO 1700 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST 18 TO 23 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (27800-67600 KNOT-FT).

.SATURDAY...
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (70-80 PERCENT). SCATTERED SNOW
                    SHOWERS IN THE MORNING. SCATTERED RAIN SHOWERS
                    THROUGH THE DAY. ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....45-50.
MIN HUMIDITY........AROUND 55 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-10 MPH. GUSTS UP TO 20 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST AROUND 15 MPH SHIFTING TO THE SOUTHEAST
                    LATE IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.50 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2900-3900 FT AGL INCREASING TO 6000-7000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 13 TO 16 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (38600-42100 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS IN
THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. LOWS IN
THE MID 20S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLOUDY WITH NUMEROUS SHOWERS AND SNOW SHOWERS.
LOWS IN THE MID 20S. HIGHS IN THE MID 40S. WINDS GENERALLY LESS
THAN 10 MPH.
.MONDAY...PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE LOWER
50S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE
UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRAUN
REQUESTED BY...PAUL SWENSON
REASON FOR REQUEST...PRESCRIBED
.TAG 20150424.COTTO.02/RIW





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