FNUS75 KRIW 041837
FWSRIW

SPOT FORECAST FOR VAIL FIRE...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
1237 PM MDT SUN SEP 4 2011

FORECAST IS BASED ON REQUEST TIME OF 1210 MDT ON SEPTEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WARM AND DRY CONDITIONS WILL CONTINUE AGAIN TODAY.
WINDS WILL MAINLY BE LIGHT AND TERRAIN DRIVEN...AND MIN RH SLIGHTLY
LOWER THAN WHAT OCCURRED YESTERDAY. SOME MOISTURE WILL BEGIN TO SURGE
NORTHWARD MONDAY AHEAD OF A WEAK DISTURBANCE THAT WILL AFFECT THE REGION
MONDAY NIGHT AND TUESDAY. AS A RESULT SOME INCREASE IN CLOUD
COVER IS EXPECTED MONDAY AFTERNOON ALONG WITH ISOLATED THUNDERSTORMS
BY TUESDAY AFTERNOON.

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

FORECASTER...LIPSON

.REST OF TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....64.
MIN HUMIDITY........23 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY FROM THE WEST SOUTHWEST AT 5-9 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........46 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY FROM THE NORTHEAST AT 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH SHIFTING TO THE SOUTH IN THE
                    LATE EVENING AND OVERNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.LABOR DAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....67.
MIN HUMIDITY........18 PERCENT.
20 FOOT WINDS.......NORTHEAST DOWNSLOPE 4 TO 7 MPH UNTIL 0730.
                    THEN CALM WINDS. WINDS BECOMING UPSLOPE/UPVALLEY FROM
                    THE WEST SOUTHWEST BY 1300 AT 5 TO 9 MPH INCREASING TO
                    10 TO 15 MPH BY 1500.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH SHIFTING TO THE WEST IN THE
                    AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. WINDS GENERALLY LESS THAN
10 MPH.
.TUESDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. WINDS GENERALLY
LESS THAN 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...VAIL FEMO
REASON FOR REQUEST...WILDFIRE
.TAG 20110904.VAILF.02/RIW