FNUS75 KRIW 052115
FWSRIW

SPOT FORECAST FOR NORTH LITTLE MT5...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
315 PM MDT FRI APR 5 2013

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A PACIFIC LOW PRESSURE TROUGH WILL MOVE THROUGH THE
BURN AREA THIS EVENING...THEN RIDGING WILL OCCUR OVER NIGHT AND
EARLY SATURDAY BRINGING PARTIAL CLEARING.  ANOTHER PACIFIC TROUGH
MOVING INTO THE WEST COAST THIS AFTERNOON WILL PASS THROUGH THE BURN
AREA WITH SHOWERS DEVELOPING IN THE AFTERNOON AND INCREASING SATURDAY
EVENING.  TEMPERATURES WILL BE ON THE COOL SIDE BUT THE AIR MASS WILL
BE UNSTABLE SATURDAY AFTERNOON BRINGING INCREASED MIXING HEIGHTS.

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

FORECASTER...C.BAKER

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (45-55 PERCENT). SCATTERED RAIN
                    SHOWERS AND ISOLATED THUNDERSTORMS EARLY IN THE
                    EVENING...THEN ISOLATED RAIN SHOWERS LATE IN
                    THE EVENING.
MIN TEMPERATURE.....35-38.
MAX HUMIDITY........67-70 PERCENT.
20 FOOT WINDS.......WEST WINDS 8 TO 12 MPH AND GUSTY EARLY IN THE
                    EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7
                    MPH...THEN BECOMING SOUTH 8 TO 9 MPH WITH GUSTS
                    TO AROUND 15 MPH LATE IN THE NIGHT. GUSTY AND
                    ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY
                    IN THE EVENING.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH SHIFTING TO THE SOUTH LATE IN
                    THE NIGHT.
LAL.................2 UNTIL 2100 MDT...THEN 1.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4400-5400 FT AGL DECREASING TO 2100-2900 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 17 TO 22 MPH BECOMING SOUTHWEST
                    AROUND 9 MPH LATE IN THE NIGHT.
SMOKE DISPERSAL.....GOOD (84200 KNOT-FT) DECREASING TO POOR (24500
                    KNOT-FT) AFTER MIDNIGHT.

.SATURDAY...
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING (55-65 PERCENT)
                    THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT).
                    ISOLATED RAIN SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....57-59.
MIN HUMIDITY........25-28 PERCENT.
20 FOOT WINDS.......SOUTH WINDS 10 TO 14 MPH WITH GUSTS TO AROUND
                    25 MPH UNTIL LATE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3300-4300 FT AGL INCREASING TO 6000-7000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 10 TO 13 MPH.
SMOKE DISPERSAL.....POOR IN THE MORNING THEN GOOD BY NOON (60000-63500
                    KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY 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.
.SUNDAY...MOSTLY CLOUDY WITH ISOLATED SHOWERS AND SNOW SHOWERS.
LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WINDS GENERALLY LESS
THAN 10 MPH.
.MONDAY...COLDER. RAIN AND SNOW LIKELY. LOWS IN THE LOWER 20S.
HIGHS AROUND 40. NORTH WINDS AROUND 11 MPH.
.TUESDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW. LOWS IN THE MID
20S. HIGHS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...NOT AS COOL. PARTLY CLOUDY WITH SLIGHT CHANCE OF
RAIN AND SNOW. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...JACK MONONI
REASON FOR REQUEST...PRESCRIBED
.TAG 20130406.NORTH.01/RIW