FNUS76 KPDT 071727
FWSPDT

SPOT FORECAST FOR CACHE CREEK...USFS WWF
NATIONAL WEATHER SERVICE PENDLETON OR
1027 AM PDT FRI SEP 7 2012

FORECAST IS BASED ON REQUEST TIME OF 1007 PDT ON SEPTEMBER 07.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO PROVIDE WARM AND DRY
CONDITIONS OVER THE FIRE AREA TODAY AND SATURDAY WITH LIGHT EASTERLY
WINDS...AND POOR OVERNIGHT HUMIDITY RECOVERY. THIS WILL CHANGE
SUNDAY AFTERNOON AS WEST WINDS RETURN AND UNSTABLE AIR BRINGS A
CHANCE OF ISOLATED SHOWERS AND THUNDERSTORMS. STRONG GUSTY OUTFLOW
WINDS UP TO 40 MPH WILL ALSO BE POSSIBLE WITH ANY STORMS THAT
DEVELOP. EVEN STRONGER WEST WINDS ARE EXPECTED ON MONDAY AS A COLD
FRONT SWEEPS THROUGH THE REGION.

***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***
***WINDS ARE 20 FOOT 10 MINUTE AVERAGES***
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***
***FORECAST IS VALID FOR 12 HOURS AFTER ISSUANCE***

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0.
MAX TEMPERATURE.....70-80 RIDGETOPS...80-90 VALLEYS.
MIN HUMIDITY........20-30 PERCENT RIDGETOPS...13-20 PERCENT VALLEYS.
WIND (20 FT)........UPSLOPE/UPVALLEY 3 TO 7 MPH WITH GUSTS AROUND 15
                    MPH IN THE AFTERNOON.
RIDGETOP WIND.......EAST-NORTHEAST WINDS 4 TO 8 MPH WITH GUSTS
                    AROUND 12 MPH INCREASING TO 6 TO 12 MPH WITH
                    GUSTS AROUND 20 MPH IN THE AFTERNOON.
MIXING HEIGHT.......NEAR SURFACE INCREASING TO 5000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....LIGHT WINDS.
LAL.................1.
HAINES INDEX........4 (LOW).

.TONIGHT...

SKY/WEATHER.........CLEAR.
CWR.................0.
MIN TEMPERATURE.....53-58 RIDGETOPS...48-53 VALLEYS.
MAX HUMIDITY........30-40 PERCENT RIDGETOPS...45-55 PERCENT VALLEYS.
WIND (20 FT)........BECOMING DRAINAGE 2 TO 6 MPH AFTER SUNSET.
RIDGETOP WIND.......EAST-NORTHEAST WINDS 6 TO 12 MPH WITH GUSTS
                    AROUND 20 MPH BECOMING SOUTHEAST 5 TO 10 MPH
                    AFTER MIDNIGHT.
MIXING HEIGHT.......5000 FT AGL DECREASING TO NEAR SURFACE AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
                    AFTER MIDNIGHT.
LAL.................1.
HAINES INDEX........3 (VERY LOW).

.SATURDAY...

SKY/WEATHER.........SUNNY.
CWR.................0.
MAX TEMPERATURE.....73-83 RIDGETOPS...83-93 VALLEYS.
MIN HUMIDITY........13-23 PERCENT RIDGETOPS...8-13 PERCENT VALLEYS.
WIND (20 FT)........UPSLOPE/UPVALLEY 3 TO 7 MPH WITH GUSTS AROUND 15
                    MPH IN THE AFTERNOON.
RIDGETOP WIND.......SOUTHEAST WINDS 3 TO 8 MPH INCREASING TO 6 TO 12
                    MPH WITH GUSTS AROUND 20 MPH IN THE AFTERNOON.
MIXING HEIGHT.......NEAR SURFACE INCREASING TO 8500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH 5 TO 7 MPH.
LAL.................1.
HAINES INDEX........3 (VERY LOW).

$$
FORECASTER...RACHEL TRIMARCO
REQUESTED BY...CHRIS WAGNER
TYPE OF REQUEST...WILDFIRE
.TAG 20120907.CACHE.01/PDT