FNUS75 KBOI 221820
FWSBOI

SPOT FORECAST FOR YELLOW PINE-EIGUREN...USFS
NATIONAL WEATHER SERVICE BOISE ID
1220 PM MDT THU SEP 22 2011

FORECAST IS BASED ON IGNITION TIME OF 1330 MDT ON SEPTEMBER 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WARM AND DRY THROUGH SATURDAY...
...FAIR MIXING FOR SMOKE DISPERSION...

.DISCUSSION...
THE UPPER LEVEL RIDGE REMAINS OVER THE FIRE AREA THROUGH SATURDAY.
THE RIDGE WILL BE AT IT STRONGEST ON FRIDAY AND SATURDAY WITH NEAR
RECORD HIGH TEMPERATURES. VENTILATION WILL BE FAIR THROUGH SATURDAY
UNDER THE STABLE RIDGE. A WEAK TROUGH WILL BRING A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS ON SUNDAY. A BETTER CHANCE FOR SHOWERS IS
ON MONDAY AND TUESDAY. LOW HAINES EXPECTED THROUGH SATURDAY.

.FRIDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....80 TO 84.
MIN HUMIDITY........10 TO 15 PERCENT.
WIND - EYE LEVEL....LIGHT DOWNSLOPE WINDS LESS THAN 3 MPH...BECOMING
                    SOUTHWEST 4 TO 7 MPH WITH GUSTS TO 12 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 5 MPH.
VENTILATION INDEX...325 FAIR.

.FRIDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....42 TO 45.
MAX HUMIDITY........40 TO 50 PERCENT.
WIND - EYE LEVEL....SOUTHWEST AROUND 7 MPH...BECOMING LIGHT DOWNSLOPE
                    WINDS LESS THAN 3 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WIND......SOUTH AROUND 5 MPH.
VENTILATION INDEX...15 POOR.

$$
FORECASTER...SMITH
REQUESTED BY...PAYETTE NATIONAL FOREST
TYPE OF REQUEST...PRESCRIBED
.TAG 20110923.YELLO.02/BOI