FNUS76 KPDT 211523
FWSPDT

SPOT FORECAST FOR OCHOCO VALLEY 352...USFS OCH
NATIONAL WEATHER SERVICE PENDLETON OR
822 AM PDT TUE APR 21 2009

FORECAST IS BASED ON IGNITION TIME OF 0805 PDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE OVER THE REGION TODAY WITH SUNNY SKIES
AND WARM TEMPERATURES. ISOLATED THUNDERSTORMS ARE POSSIBLE IN THE
LATE AFTERNOON AND EVENING AS THE AIRMASS BECOMES UNSTABLE. A TROUGH
OF LOW PRESSURE WILL BRING COOLER AND BREEZY CONDITIONS WEDNESDAY.

***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 THEN BECOMING PARTLY CLOUDY. ISOLATED
                    RAIN SHOWERS AND THUNDERSTORMS IN THE LATE
                    AFTERNOON.
CWR.................10.
MAX TEMPERATURE.....81.
MIN HUMIDITY........20 PERCENT.
WIND (20 FT)........UPSLOPE 2 TO 4 MPH BECOMING NORTH 4 TO 7 MPH IN
                    THE AFTERNOON.
RIDGETOP WIND.......WEST 3 TO 5 MPH BECOMING NORTHWEST 7 TO 9 MPH IN
                    THE AFTERNOON.
MIXING HEIGHT.......10500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST TO WEST 10 TO 13 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS
                    AND THUNDERSTORMS IN THE EVENING...THEN BECOMING
                    MOSTLY CLEAR OVERNIGHT.
CWR.................10.
MIN TEMPERATURE.....36.
MAX HUMIDITY........85 PERCENT.
WIND (20 FT)........NORTH WINDS 4 TO 7 MPH IN THE EVENING BECOMING
                    DRAINAGE WINDS LESS THAN 5 MPH AFTER SUNSET.
RIDGETOP WIND.......NORTHWEST WINDS 7 TO 9 MPH IN THE EVENING
                    BECOMING WEST 3 TO 5 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......10500 FT AGL DECREASING TO 500 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 10 TO 13 MPH DECREASING TO 5 TO 8 MPH
                    AFTER MIDNIGHT.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY IN THE
                    AFTERNOON.
CWR.................0.
MAX TEMPERATURE.....74.
MIN HUMIDITY........26 PERCENT.
WIND (20 FT)........TERRAIN DRIVEN WINDS LESS THAN 5 MPH BECOMING
                    NORTH 7 TO 10 MPH IN THE AFTERNOON.
RIDGETOP WIND.......WEST WINDS 4 TO 7 MPH INCREASING TO 9 TO 14 MPH
                    IN THE AFTERNOON.
MIXING HEIGHT.......500 FT AGL INCREASING TO 6000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 5 MPH INCREASING TO 12 TO 15 MPH IN
                    THE AFTERNOON.

$$
FORECASTER...DMH
REQUESTED BY...WALTER CARTER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090421.OCHOC.01/PDT