FNUS75 KRIW 211909
FWSRIW

SPOT FORECAST FOR GARNET SAR...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
109 PM MDT THU APR 21 2011

FORECAST IS BASED ON INCIDENT TIME OF 1252 MDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 AM MDT FRIDAY...

.DISCUSSION...
A SWATH OF SNOW SHOWER ACTIVITY CONTINUES TO MOVE THROUGH WESTERN
WYOMING THIS AFTERNOON. THUNDERSTORM ACTIVITY IS FAVORABLE TO
MOVE OVER THE RESCUE SITE TODAY...WITH LIGHTNING AND GUSTY AND
ERRATIC WIND TO 50 MPH POSSIBLE. THUNDERSTORM ACTIVITY WILL
DIMINISH WITH THE LOSS OF SUNLIGHT THIS EVENING. SNOWFALL...WHICH
MAY BE HEAVY AT TIMES...WILL CONTINUE THROUGH FRIDAY. THE HEAVIEST
SNOWFALL IS EXPECTED TO OCCUR THROUGH THE EARLY MORNING HOURS OF
FRIDAY. A WINTER WEATHER ADVISORY IS IN EFFECT FOR THE RESCUE
SITE...WITH AN EXPECTED 5 TO 8 INCHES OF SNOWFALL POSSIBLE BY
FRIDAY MORNING. SNOWFALL WILL KEEP THE MOUNTAINS OBSCURED IN
CLOUDS AND ONGOING PRECIPITATION.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........CLOUDY (90-100 PERCENT). NUMEROUS SNOW SHOWERS
                    WITH ISOLATED THUNDERSTORMS. PERIODS OF
                    MODERATE TO HEAVY SNOWFALL WILL BE POSSIBLE.
MAX TEMPERATURE.....27-31.
MIN HUMIDITY........76-80 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO
                    AROUND 30 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................2.
CHC OF WETTING RAIN.97 PERCENT.

.TONIGHT...
SKY/WEATHER.........CLOUDY (85-95 PERCENT). NUMEROUS SNOW SHOWERS
                    WITH EXPECTED PERIODS OF MODERATE TO HEAVY
                    SNOWFALL THROUGH 0300.
MIN TEMPERATURE.....10-14.
MAX HUMIDITY........96-100 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 20 TO 25 MPH WITH GUSTS TO
                    AROUND 40 MPH.
RIDGE TOP WINDS.....WEST 30 TO 35 MPH.
LAL.................1.
CHC OF WETTING RAIN.76 PERCENT.

.FRIDAY...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW.
MAX TEMPERATURE.....21-25.
MIN HUMIDITY........65-70 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
                    MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.38 PERCENT.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SNOW IN THE EVENING...
THEN SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. LOWS AROUND 8. WINDS
GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS AROUND
14. HIGHS IN THE UPPER 20S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS AROUND 19. HIGHS AROUND 30. WINDS GENERALLY
LESS THAN 10 MPH.
.MONDAY...SNOW SHOWERS LIKELY AND ISOLATED THUNDERSTORMS. LOWS
AROUND 16. HIGHS IN THE UPPER 20S. SOUTHWEST WINDS AROUND 11 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...W  PETSCH
REASON FOR REQUEST...SAR
.TAG 20110421.GARNE.02/RIW