FNUS75 KBOI 201707
FWSBOI

SPOT FORECAST FOR RAINBOW FIRE...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
1107 AM MDT FRI AUG 20 2010

FORECAST IS BASED ON REQUEST TIME OF 1033 MDT ON AUGUST 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WARM AND DRY TODAY...
...DRY COLD FRONT PASSAGE LATE SATURDAY NIGHT...
...WINDY AND DRY ON SATURDAY...

.DISCUSSION...DRY AND VERY WARM THERMAL TROUGH OVER THE AREA TODAY.
SOUTHWEST FLOW ALOFT WILL STRENGTHEN INCREASING SURFACE WINDS
PARTICULARLY ON SATURDAY. A COLD FRONT WILL MOVE THROUGH THE FIRE AREA
LATE SATURDAY NIGHT OR EARLY SUNDAY MORNING. THIS WILL BRING GUSTY WINDS
TO THE AREA DURING SATURDAY AFTERNOON.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....67 TO 73.
MIN HUMIDITY........16 TO 22 PERCENT.
WIND (EYE LEVEL)....SOUTH 3 TO 6 MPH IN THE
                    MORNING...INCREASING TO AROUND 5 TO 8 MPH IN THE
                    AFTERNOON WITH GUSTS TO 12 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
VENTILATION INDEX...900 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....44 TO 50.
MAX HUMIDITY........35 TO 45 PERCENT.
WIND (EYE LEVEL)....DOWNSLOPE 2 TO 4 MPH BECOMING NORTHERLY AFTER
                    MIDNIGHT.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
VENTILATION INDEX...45 POOR.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....67 TO 73.
MIN HUMIDITY........20 TO 26 PERCENT.
WIND (EYE LEVEL)....SOUTH 3 TO 6 MPH IN THE MORNING.
                    INCREASING TO AROUND 6 TO 10 MPH IN THE AFTERNOON.
                    WITH GUSTS TO AROUND 18 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
VENTILATION INDEX...750 EXCELLENT.

$$
FORECASTER...EGAN
REQUESTED BY...DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 20100820.RAINB.01/BOI