Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 101601
FWSRIW

SPOT FORECAST FOR JACKSON SLIDE...TETON COUNTY
NATIONAL WEATHER SERVICE RIVERTON WY
1001 AM MDT THU APR 10 2014

FORECAST IS BASED ON INCIDENT TIME OF 0933 MDT ON APRIL 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A PARTLY TO MOSTLY CLOUDY AND MILD DAY EXPECTED TODAY
WITH A SPRINKLE POSSIBLE IN THE AFTERNOON AS A WEAK BUT DRY DISTURBANCE
MOVES THROUGH THIS AFTERNOON. IT WILL BE SEVERAL DEGREES WARMER ON
FRIDAY AS MILD AIR MOVES IN FROM THE SOUTH. IT WILL BE SHORT LIVED
HOWEVER AS A SIGNIFICANT STORM SYSTEM MOVES IN ON SATURDAY. IT LOOKS
LIKE THE MORE SIGNIFICANT PRECIPITATION WILL BEGIN LATER IN THE
NIGHT AND WILL BEGIN AS RAIN WITH THE SNOW LEVEL REACHING DOWN
TO AROUND 6KFT BY ABOUT MIDNIGHT...SO MOST OF THE VALLEY...CHANGING
TO ALL SNOW BY EARLY SUNDAY MORNING. HOWEVER...ANOTHER SWATH OF WARM
AIR MOVES INTO THE AREA SUNDAY AFTERNOON AS ANOTHER WAVE ARRIVES WITH
SNOW LEVELS GOING BACK UP TO ABOUT 6.5KFT. SO FAR THE MODELS ARE
PLACING ANYWHERE FROM ONE TENTH OF AN INCH TO ONE QUARTER OF AN INCH
OF RAIN/SNOW WATER EQUIVALENT IN THE VALLEY DURING THAT TIME. A RIDGE
BUILDS IN ON MONDAY AND TUESDAY WITH WARM TEMPERATURES AGAIN RETURNING
FOLLOWED BY ANOTHER STORM SYSTEM AT THE MIDDLE OF NEXT WEEK WITH
RAIN AS THE PREDOMINANT FORM OF PRECIPITATION.

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

FORECASTER...ALLEN

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). OCCASIONAL SPRINKLES
                    IN THE AFTERNOON.
MAX TEMPERATURE.....49-52.
MIN HUMIDITY........30-33 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 10
                    TO 11 MPH IN THE LATE MORNING AND AFTERNOON.
                    GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....31-34.
MAX HUMIDITY........71-74 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTH IN THE
                    LATE EVENING AND OVERNIGHT.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....55-58.
MIN HUMIDITY........23-26 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTH AROUND
                    11 MPH WITH HIGHER GUSTS LATE IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 30S. SOUTH WINDS
AROUND 10 MPH.
.SATURDAY...BECOMING MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN.
LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 50S. WINDS GENERALLY
LESS THAN 10 MPH.
.SUNDAY...COLDER. MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW AND
RAIN. LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE UPPER
40S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ALLEN
REQUESTED BY...EM
REASON FOR REQUEST...SLIDE SUPPORT
.TAG 20140410.JACKS.01/RIW






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