FNUS75 KRIW 171012
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
412 AM MDT MON SEP 17 2012

FORECAST IS BASED ON REQUEST TIME OF 1944 MDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A STABLE NORTHERLY FLOW WILL PREVAIL ALOFT TODAY WITH A LOW
LEVEL UPSLOPE FLOW BRINGING IN A COOLER AND MORE MOIST AIRMASS
INTO THE EAST SLOPES. NORTHWEST WINDS WILL LIKELY MIX DOWN THE
EAST SLOPES LATE THIS EVENING AND OVERNIGHT. A WARMER AND
DRIER NORTHWEST FLOW WILL FOLLOW ON TUESDAY WITH SOME GUSTY
NORTHWEST RIDGE TOP WINDS IN THE AFTERNOON.

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

FORECASTER...MEUNIER

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
MAX TEMPERATURE.....52-55.
MIN HUMIDITY........37-40 PERCENT.

20 FOOT WINDS.......BECOMING UPSLOPE/UP CANYON OR EAST SOUTHEAST 5 TO 10
                    MPH WITH GUSTS TO 15 MPH LATE MORNING AND AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 5 TO 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......NEAR PEAK LEVEL IN THE MORNING OR NEAR 3000 FT ABOVE CANYON
                    FLOOR...INCREASING TO 7200-8200 FT IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH IN THE MORNING...INCREASING
                    TO NEAR 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR IN THE MORNING (30000-40000 KNOT-FT).  VERY GOOD
                    IN THE AFTERNOON (122400-140000 KNOT-FT).

.MONDAY NIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....36-41.
MAX HUMIDITY........54-59 PERCENT.

20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH BECOMING NORTHWEST 10 TO
                    15 MPH WITH GUSTS 20 TO 25 MPH LATE EVENING AND OVERNIGHT.
RIDGE TOP WINDS.....NORTHWEST 5 TO 10 MPH INCREASING TO NEAR 20 MPH LATE
                    EVENING AND OVERNIGHT.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......4000-5000 FT AGL DECREASING TO 1900-2400 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD.

.TUESDAY...
SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....61-64.
MIN HUMIDITY........21-24 PERCENT.

20 FOOT WINDS.......UPSLOPE/UP CANYON 5 TO 10 MPH WITH GUSTS TO 15 MPH LATE
                    MORNING AND EARLY AFTERNOON...SHIFTING TO THE NORTHWEST
                    LATE AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 15 TO 20 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......NEAR 3000 FT ABOVE THE CANYON FLOOR IN THE MORNING...
                    INCREASING TO 5900-6900 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLEAR. LOWS IN THE LOWER 40S. WEST WINDS 10 TO 15 MPH.

.WEDNESDAY...CLEAR. AREAS OF SMOKE. LOWS IN THE LOWER 40S. HIGHS
IN THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.

.THURSDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

.FRIDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...BEAU KIDD
REASON FOR REQUEST...WILDFIRE
.TAG 20120916.ALPIN.01/RIW