FNUS75 KBOI 221508
FWSBOI

SPOT FORECAST FOR UPPER WEISER RX...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
908 AM MDT FRI OCT 22 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON OCTOBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...COOLER TEMPERATURES AND HIGHER VENTILATION INDICES TODAY...

.DISCUSSION...SOUTHWEST FLOW WILL PROVIDE BETTER MIXING AND STRONGER
WINDS FOR HIGHER VENTILATION TODAY...AT A COST OF CLOUDY AND COOLER
WEATHER. A SIGNIFICANT PATTERN CHANGE IS IN THE WORKS BEGINNING SATURDAY
MORNING WITH A CHANCE OF SHOWERS. WINDY AND WET CONDITIONS WILL BEGIN IN
EARNEST BEFORE SUNRISE SUNDAY WITH A SEASON ENDING RAINFALL.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....56 TO 60.
MIN HUMIDITY........38 TO 43 PERCENT.
WIND - EYE LEVEL....BECOMING UPSLOPE SOUTHWEST 4 TO 8 MPH IN THE AFTERNOON.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 10 MPH.
VENTILATION INDEX...550 GOOD.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY...THEN BECOMING MOSTLY CLOUDY.
MIN TEMPERATURE.....28 TO 33.
MAX HUMIDITY........80 TO 90 PERCENT.
WIND - EYE LEVEL....SOUTHWEST 5 TO 7 MPH IN THE EVENING...BECOMING
                    DOWNSLOPE NORTHEAST AROUND 4 MPH AFTER SUNSET.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WIND......SOUTHEAST AROUND 5 MPH.
VENTILATION INDEX...10 POOR.

.SATURDAY...

SKY/WEATHER.........CLOUDY. LIGHT RAIN SHOWERS IN THE MORNING.
MAX TEMPERATURE.....AROUND 45.
MIN HUMIDITY........60 TO 70 PERCENT.
WIND - EYE LEVEL....SOUTHWEST 5 TO 10 MPH.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WIND......SOUTH AROUND 10 MPH.
VENTILATION INDEX...200 FAIR.

$$
FORECASTER...DECKER
REQUESTED BY...PAYETTE NATIONAL FOREST
TYPE OF REQUEST...PRESCRIBED
.TAG 20101022.UPPER.01/BOI