FNUS75 KRIW 050151
FWSRIW

SPOT FORECAST FOR GAMBEL S BASIN...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
751 PM MDT THU APR 4 2013

FORECAST IS BASED ON IGNITION TIME OF 1935 MDT ON APRIL 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A WEATHER SYSTEM WILL MOVE THROUGH THE BURN SITE FRIDAY.
SHOWERS WILL HAVE FORMED OR WILL BE FORMING AROUND DAYBREAK OVER AND
NEAR THE WASHAKIE NEEDLES. THERE WILL BE PERIODS OF SHOWERS MOVING EAST
OFF THE MOUNTAINS AND IMPACTING THE BURN SITE PRETTY MUCH ALL DAY.
THERE MAY BE BREAKS IN THE SHOWERS BUT ANY SUNSHINE WOULD CREATE
INSTABILITY AND THUS MORE SHOWER DEVELOPMENT. CANNOT RULE OUT AN ISOLATED
THUNDERSTORM IN THAT LOCATION AROUND MIDDAY INTO THE AFTERNOON. THE
WIND WILL ALSO BE INCREASING AS THE COLD FRONT PASSES THROUGH AROUND
NOON. SATURDAY LOOKS LIKE LESS SHOWERS WITH ONLY ISOLATED SHOWER
ACTIVITY OVER AND NEAR THE WASHAKIE NEEDLES IN THE AFTERNOON. AGAIN WITH
THE BURN SITE NEARBY CANNOT RULE OUT A BRIEF SHOWER SATURDAY AFTERNOON.

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

FORECASTER...AR

.FRIDAY...
SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS DURING
                    THE DAY...SNOW SHOWERS POSSIBLE DOWN TO 8500
                    FEET IN THE AFTERNOON. ISOLATED THUNDERSTORM
                    POSSIBLE FROM 1200 TO 1800.
MAX TEMPERATURE.....48-53...TEMPERATURES FALLING TO 39-44 IN THE
                    AFTERNOON.
MIN HUMIDITY........35-40 PERCENT...RH RISING INTO THE 40S IN THE
                    AFTERNOON.
20 FOOT WINDS.......WEST WIND AT 10 TO 15 MPH UNTIL 1100.
                    WEST WIND AT 15 TO 20 MPH WITH GUSTS TO 30 MPH
                    AFTER 1100.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH INCREASING TO 20 TO 25 MPH
                    AFTER 1200...WITH GUSTS TO 35 MPH.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......AROUND 4000 FT AGL IN THE MORNING...LOWERING
                    TO 3000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AT 15 TO 20 MPH UNTIL 1200.
                    WEST AT 20 TO 25 MPH AFTER 1200.
SMOKE DISPERSAL.....FAIR TO GOOD.

.FRIDAY NIGHT...
SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED RAIN OR SNOW SHOWERS
                    UNTIL 2100...THEN ISOLATED RAIN OR SNOW SHOWERS
                    UNTIL MIDNIGHT. DECREASING CLOUDS AFTER MIDNIGHT.
MIN TEMPERATURE.....30-34.
MAX HUMIDITY........77-83 PERCENT.
20 FOOT WINDS.......WEST TO NORTHWEST AT 10 TO 15 MPH UNTIL SUNSET.
                    BECOMING DOWNSLOPE/DOWNVALLEY AT 4 TO 8 MPH AFTER
                    SUNSET.
RIDGE TOP WINDS.....WEST AT 15 TO 20 MPH UNTIL SUNSET...THEN WEST
                    AT 8 TO 12 MPH AFTER SUNSET.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 500-1000 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AT 20 MPH UNTIL SUNSET...THEN WEST AT 10 TO 15 MPH
                    AFTER SUNSET.
SMOKE DISPERSAL.....FAIR...DECREASING TO POOR BY MIDNIGHT.

.SATURDAY...
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING. INCREASING CLOUDS
                    IN THE AFTERNOON.  ISOLATED RAIN SHOWERS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....47-51.
MIN HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......VARIABLE TO UPSLOPE AT 4 TO 7 MPH UNTIL 1400.
                    WEST AT 5 TO 10 MPH AFTER 1400.
RIDGE TOP WINDS.....WEST AT 5 TO 10 MPH UNTIL 1400.
                    WEST AT 9 TO 14 MPH AFTER 1400.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 5500-6000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AT 10 TO 15 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR...INCREASING TO FAIR BY 1200...GOOD AFTER 1400.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS IN THE EVENING...THEN SCATTERED SNOW SHOWERS AFTER
MIDNIGHT. LOWS AROUND 30. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S. WINDS GENERALLY LESS
THAN 10 MPH.
.MONDAY...CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS AROUND 19.
HIGHS IN THE UPPER 30S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW. LOWS IN THE LOWER
20S. HIGHS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...MONONI
REASON FOR REQUEST...PRESCRIBED
.TAG 20130404.GAMBE.02/RIW