FNUS75 KRIW 022136
FWSRIW

SPOT FORECAST FOR LAVA RX...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
336 PM MDT TUE APR 2 2013

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON APRIL 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...RIDGING BUILDS IN ON THURSDAY WITH MILD TEMPERATURES
AND MODERATE BREEZES FORMING IN THE AFTERNOON AND EVENING AS
A SURFACE LOW FORMS EAST OF THE DIVIDE...INCREASING THE SURFACE
PRESSURE GRADIENT. IT WILL BE WEAKLY UNSTABLE IN THE AFTERNOON WITH
SOME SHOWERS FORMING OVER THE HIGHER TERRAIN. RELATIVE HUMIDITY WILL
BE MODERATE...LIKELY STAYING ABOVE 30 PERCENT. A COLD FRONT MOVES
THROUGH ON FRIDAY INCREASING THE WIND SPEEDS FROM THE WEST AND
SPREADING WETTING RAIN AND SNOW ACROSS THE AREA. HIGH TEMPERATURES
WILL COOL 10 TO 15 DEGREES BETWEEN THURSDAY AND SATURDAY.

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

FORECASTER...ALLEN

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (35-45 PERCENT) WITH ISOLATED
                    SHOWERS IN THE AFTERNOON AND EVENING.
MAX TEMPERATURE.....53-56.
MIN HUMIDITY........32-36 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1300-2300 FT AGL INCREASING TO 4300-5300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 12 TO 17 MPH.
SMOKE DISPERSAL.....POOR (20100 KNOT-FT) INCREASING TO GOOD (71500
                    KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLOUDY. SCATTERED SHOWERS IN THE
EVENING...THEN SCATTERED SHOWERS AND SNOW SHOWERS AFTER MIDNIGHT.
LOWS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 40S. SOUTHWEST WINDS
10 TO 15 MPH GUSTING TO 25 MPH BECOMING WEST 20 MPH.
.SATURDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE MID 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 40S. WINDS GENERALLY
LESS THAN 10 MPH.
.MONDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS AROUND 17. HIGHS IN THE LOWER 40S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...ALLEN
REQUESTED BY...JIM RAMIREZ
REASON FOR REQUEST...PRESCRIBED
.TAG 20130404.LAVAR.01/RIW