FNUS76 KPDT 171351
FWSPDT

SPOT FORECAST FOR THREE PRAIRIE 44 27 26...USFS UMATILLA
NATIONAL WEATHER SERVICE PENDLETON OR
650 AM PDT FRI SEP 17 2010

FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A LARGE AND SLOW MOVING WEATHER SYSTEM OFF THE COAST
WILL MOVE CLOSER TO THE COAST TODAY AND THEN MOVE ACROSS THE PACIFIC
NORTHWEST DURING THE WEEKEND. A SOUTH TO SOUTHWEST FLOW AHEAD OF IT
WILL BRING SHOWERY WEATHER ALONG WITH COOLER TEMPERATURES AND HIGHER
HUMIDITIES BY THE WEEKEND. THERE WILL ALSO BE A POSSIBILITY OF
THUNDERSTORMS ON SATURDAY.

***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.........MOSTLY CLOUDY. ISOLATED SHOWERS IN THE
                    MORNING...THEN SCATTERED SHOWERS IN THE
                    AFTERNOON.
CWR.................10.
MAX TEMPERATURE.....73-75.
MIN HUMIDITY........30-32 PERCENT.
WIND (20 FT)........SE 0-4 MPH INCREASING TO NE 4-9 MPH BY NOON.
RIDGETOP WIND.......SE 3-8 MPH BECOMING N-NE 10-15 BY NOON.
MIXING HEIGHT.......NEAR SURFACE INCREASING TO 4000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SE 2-6 BECOMING NE 8-14 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY.
CWR.................40.
MIN TEMPERATURE.....49-51.
MAX HUMIDITY........94-96 PERCENT.
WIND (20 FT)........NW 5-10 MPH DECREASING TO SW-W 1-5 MPH.
RIDGETOP WIND.......NW 9-14 DECREASING TO SW-W 2-6 MPH.
MIXING HEIGHT.......4000 FT AGL DECREASING TO 1000 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NW 7-13 DECREASING TO SW 3-8 MPH BY MIDNIGHT.

.SATURDAY...

SKY/WEATHER.........CLOUDY. SHOWERS LIKELY. COOLER.
CWR.................50.
MAX TEMPERATURE.....66-68.
MIN HUMIDITY........58-60 PERCENT.
WIND (20 FT)........SW 1-5 MPH BECOMING NE 3-8 MPH BY AFTERNOON.
RIDGETOP WIND.......S-SW 2-6 MPH BECOMING NE-E 4-9 MPH BY AFTERNOON.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 4500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SW 2-6 MPH BECOMING NE-E 4-9 MPH BY AFTERNOON.

$$

FORECASTER...ROGER CLOUTIER
REQUESTED BY...STINCHFIELD
TYPE OF REQUEST...PRESCRIBED
.TAG 20100917.THREE.01/PDT