FNUS75 KRIW 202043
FWSRIW

SPOT FORECAST FOR GARNET SAR...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
243 PM MDT WED APR 20 2011

FORECAST IS BASED ON INCIDENT TIME OF 1352 MDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A SHIELD OF THICK CLOUD COVER CONTINUES TO MOVE TOWARDS THE RESCUE
SITE THIS AFTERNOON. SKIES WILL REMAIN OVERCAST THROUGH THE
FORECAST PERIOD. SNOWFALL ASSOCIATED WITH AN ADVANCING WAVE OF
LOW PRESSURE WILL BEGIN TO DEVELOP OVER THE RESCUE SITE EARLY THIS
EVENING. SNOWFALL WILL CONTINUE OVERNIGHT AND THROUGH
THURSDAY...RESULTING IN LOW VISIBILITIES IN LIGHT TO OCCASIONALLY
MODERATE SNOWFALL. AS THE WAVE ADVANCES...SOUTHWEST WIND OVER THE
RESCUE SITE WILL ALSO INCREASE. THUNDERSTORMS ARE POSSIBLE WITH
THE SNOW SHOWERS THURSDAY AFTERNOON. LIGHTNING WITH GUSTY AND
ERRATIC WIND ARE THE MAJOR THREATS ASSOCIATED WITH THUNDERSTORM
ACTIVITY.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........CLOUDY (80-90 PERCENT).
MAX TEMPERATURE.....31-34.
MIN HUMIDITY........50-53 PERCENT.
20 FOOT WINDS.......SOUTH 7 TO 12 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.

.TONIGHT...
SKY/WEATHER.........CLOUDY (85-95 PERCENT). SNOW DEVELOPING BY
                    1800 WITH SNOW LIKELY THROUGH THE OVERNIGHT
                    HOURS.
MIN TEMPERATURE.....22-27.
MAX HUMIDITY........95-100 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 11 TO 15 MPH. GUSTS UP TO 25
                    MPH INCREASING TO 30 MPH BY 0200.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.39 PERCENT.

.THURSDAY...
SKY/WEATHER.........CLOUDY (90-100 PERCENT). SNOW SHOWERS THROUGH
                    THE DAY. ISOLATED THUNDERSTORMS DEVELOPING
                    AFTER 1300.
MAX TEMPERATURE.....26-30.
MIN HUMIDITY........78-81 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 30
                    MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1 UNTIL 1300...THEN 2.
CHC OF WETTING RAIN.99 PERCENT.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...COLDER. SNOW IN THE EVENING...THEN SNOW LIKELY
AFTER MIDNIGHT. LOWS AROUND 12. WEST WINDS AROUND 16 MPH.
.FRIDAY...CLOUDY WITH SNOW SHOWERS LIKELY. LOWS AROUND 11. HIGHS
IN THE LOWER 20S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.
LOWS AROUND 18. HIGHS IN THE UPPER 20S. WINDS GENERALLY LESS THAN
10 MPH.
.SUNDAY...SNOW SHOWERS LIKELY AND ISOLATED THUNDERSTORMS. LOWS
AROUND 19. HIGHS IN THE LOWER 30S. SOUTH WINDS AROUND 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...WAYNE PETSCH
REASON FOR REQUEST...SAR
.TAG 20110420.GARNE.02/RIW