FNUS75 KRIW 112112
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
312 PM MDT TUE SEP 11 2012

FORECAST IS BASED ON REQUEST TIME OF 1448 MDT ON SEPTEMBER 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A COLD FRONT MOVING SOUTHWARD WILL MOVE THROUGH THE AREA TUESDAY
EVENING AND BE SOUTH OF THE FIRE SITE BY TOMORROW MORNING BEFORE
WASHING OUT. A DRIER AIR MASS WILL BE OVER THE AREA WEDNESDAY WILL
BRING A MAINLY DRY WITH MAINLY DIURNALLY DRIVEN WINDS. WINDS MAY
INCREASE A BIT LATER WEDNESDAY AFTERNOON AND INTO WEDNESDAY EVENING
AS ANOTHER PUSH OF COOL AIR DROPS SOUTHWARD INTO WYOMING OUT OF
MONTANA. EXPECT LIGHTER WINDS AFTER AROUND MIDNIGHT ON WEDNESDAY
NIGHT WITH COOL TEMPERATURES. DIURNALLY WINDS WILL DOMINATE ON
THURSDAY AS HIGH PRESSURE BUILDS INTO THE REGION.

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

FORECASTER...HATTINGS

.TODAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....55-65.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-10 MPH WITH GUSTS TO 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST 6 TO 12 MPH SHIFTING TO THE NORTH
                    LATE IN THE MORNING...THEN SHIFTING TO THE
                    NORTHEAST IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3900-4900 FT AGL INCREASING TO 6000-7000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 6 TO 12 MPH SHIFTING TO THE NORTH
                    AROUND 9 MPH LATE IN THE MORNING...THEN
                    SHIFTING TO THE NORTHEAST 8 TO 16 MPH IN THE
                    AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (34200-64900 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT). AREAS OF SMOKE.
MIN TEMPERATURE.....34-38.
MAX HUMIDITY........50-55 PERCENT.
20 FOOT WINDS.......EAST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 15
                    MPH EARLY IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-8 MPH.
RIDGE TOP WINDS.....EAST 10 TO 18 MPH SHIFTING TO THE SOUTH 5 TO 10
                    MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4300-5300 FT AGL DECREASING TO 2100-2600 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....EAST 8 TO 16 MPH SHIFTING TO THE SOUTH 6 TO 12
                    MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR TO FAIR (15800-49200 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....55-61.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....EAST 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.......3600-4600 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 14 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (33300-49900 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...CLEAR. AREAS OF SMOKE. LOWS IN THE LOWER 40S.
WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...CLEAR. AREAS OF SMOKE. LOWS IN THE MID 40S. HIGHS IN
THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS...
THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN
THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...HATTINGS
REQUESTED BY...SID HALL
REASON FOR REQUEST...WILDFIRE
.TAG 20120911.ALPIN.01/RIW