FNUS76 KPDT 191805
FWSPDT

SPOT FORECAST FOR HIGHWAY 20  104...USFS DEF
NATIONAL WEATHER SERVICE PENDLETON OR
1106 AM PDT MON APR 19 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON APRIL 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WARM WITH RELATIVELY LOW HUMIDITY TODAY AS SLOW MOVING
OFFSHORE UPPER TROUGH GRADUALLY WORKS INLAND THROUGH MID WEEK. WEAK
MID LEVEL INSTABILITY PRESENT TODAY, BUT PROBABLY NOT ENOUGH TO
RESULT IN THUNDERSTORMS. CAN'T COMPLETELY RULE OUT HOWEVER. BREEZY
SOUTHERLY WINDS THIS AFTERNOON.  COLD FRONT LIKELY TO CROSS LATE
TUESDAY AFTERNOON. STRONG CHANCE OF WETTING RAIN TUESDAY THROUGH
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***

.REST OF TODAY...

SKY/WEATHER.........ISOLATED SHOWERS THROUGH THE DAY. A SLIGHT
                    CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................10.
MAX TEMPERATURE.....69.
MIN HUMIDITY........24 PERCENT.
WIND (20 FT)........TERRAIN DRIVEN LESS THAN 5 MPH BECOMING
                    WEST 6 TO 9 MPH LATE IN THE AFTERNOON.
 UPR SLP/RIDGETOP...SOUTH 3 TO 8 MPH BECOMING NORTHWEST 10 TO 15 MPH
                    LATE IN THE AFTERNOON.
MIXING HEIGHT.......5500 FEET IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH BECOMING NORTHWEST AROUND 12
                    MPH LATE IN THE AFTERNOON.

.TONIGHT...

SKY/WEATHER.........CLOUDY. A CHANCE OF RAIN.
CWR.................40.
MIN TEMPERATURE.....41-46.
MAX HUMIDITY........89-94 PERCENT.
WIND (20 FT)........WEST WINDS 3 TO 8 MPH BECOMING DRAINAGE LESS
                    THAN 5 MPH AFTER 2200 HRS.
 UPR SLP/RIDGETOP...NORTHWEST 10 TO 15 MPH BECOMING SOUTHWEST 4 TO 8
                    MPH AFTER MIDNIGHT.
MIXING HEIGHT.......5000 FT AGL DECREASING TO 1000 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH BECOMING SOUTHWEST
                    AROUND 5 MPH AFTER MIDNIGHT.

.TUESDAY...

SKY/WEATHER.........CLOUDY. RAIN LIKELY.
CWR.................80.
MAX TEMPERATURE.....51.
MIN HUMIDITY........57 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 4 TO 8 MPH INCREASING TO 8 TO 11
                    MPH WITH GUSTS TO 20 MPH IN THE AFTERNOON.
 UPR SLP/RIDGETOP...NORTHWEST 8 TO 12 MPH INCREASING TO 14 TO 18 MPH
                    LATE IN THE AFTERNOON.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 3500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 5 MPH IN THE MORNING BECOMING
                    NORTHWEST AROUND 10 MPH IN THE AFTERNOON.

$$
FORECASTER...JON BONK
REQUESTED BY...PHIL HENDERSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20100419.HIGHW.01/PDT