FNUS75 KRIW 181007
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
407 AM MDT TUE SEP 18 2012

FORECAST IS BASED ON REQUEST TIME OF 2046 MDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A DRY NORTHWEST FLOW ALOFT WILL HOLD OVER THE FIRE AREA THE REMAINDER
OF THE WEEK. WINDS THE NEXT COUPLE DAYS WILL GENERALLY BE DIURNAL IN
THE VALLEYS AND LOWEST ELEVATIONS FROM THE LATE MORNING THROUGH EARLY
EVENING BUT GUSTY NORTHWEST RIDGETOP WINDS WILL SURFACE AT TIMES
BELOW THE RIDGES DURING THE OVERNIGHT HOURS INTO PART OF THE MORNING.
THE RIDGES WILL CONTINUE BREEZY TO WINDY AT TIMES...ESPECIALLY FROM THE
NIGHT TIME INTO THE MID MORNING. TEMPERATURES WILL WARM ABOUT 10 DEGREES
TODAY OVER MONDAY WITH LITTLE CHANGE THE REMAINDER OF THE WEEK. FAIRLY
POOR RH RECOVERY IS EXPECTED TONIGHT WITH LOWER MINIMUM RH'S EXPECTED
WEDNESDAY ALONG WITH AN INCREASING HAINES INDEX FROM A 4 TODAY TO A 5
ON WEDNESDAY.


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

FORECASTER...SKRBAC

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....58-62 BETWEEN 10K AND 11K FEET.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS 8 TO 12 MPH WITH GUSTS TO 16 MPH
                    UNTIL 1000L THEN UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTH NORTHWEST 20 TO 25 MPH GUSTING TO 35 MPH
                    DECREASING TO 10 TO 15 MPH WITH GUSTS TO 25 MPH
                    AFTER 1100L.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2200-3200 FT AGL INCREASING TO 7000-7500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH DECREASING TO 10 TO 15 MPH
                    IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD (70000-75000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (0-5 PERCENT).
MIN TEMPERATURE.....41-46.
MAX HUMIDITY........35-42 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-8 MPH BECOMING NORTHWEST 9 TO
                    13 MPH WITH GUSTS TO 18 MPH AFTER 2200L.
RIDGE TOP WINDS.....NORTH NORTHWEST 15 MPH...GUSTS TO 25 MPH INCREASING TO
                    20 T0 25 MPH WITH GUSTS TO 35 MPH AFTER 2200L.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5000-6000 FT AGL DECREASING TO 1300-2300 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....VERY GOOD EARLY THEN DECREASING TO FAIR (105000-45000
                    KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....58-62 BETWEEN 10K AND 11K FEET.
MIN HUMIDITY........16-19 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTH NORTHWEST 15 TO 20 MPH WITH GUSTS TO 25 MPH UNTIL
                    1000L.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2900-3900 FT AGL INCREASING TO 8000-8500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH .
SMOKE DISPERSAL.....POOR BECOMING VERY GOOD IN THE AFTERNOON
                    (38000-103000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH...EXCEPT GUSTY NORTHWEST OVER THE RIDGES.
.THURSDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...CLEAR. LOWS AROUND 40. HIGHS AROUND 60. WINDS GENERALLY
LESS THAN 10 MPH.
.SATURDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...SKRBAC
REQUESTED BY...BEAU KIDD
REASON FOR REQUEST...WILDFIRE
.TAG 20120917.ALPIN.01/RIW