FNUS76 KPDT 051120
FWSPDT

SPOT FORECAST FOR FLAT TOP 4...USFS
NATIONAL WEATHER SERVICE PENDLETON OR
419 AM PDT WED MAY 5 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON MAY 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LEVEL LOW PRESSURE SYSTEM OVER WASHINGTON
WILL MOVE SOUTHEASTWARD ACROSS OREGON THROUGH EARLY THURSDAY. MOST
OF THE ENERGY WITH THIS SYSTEM WILL REMAIN NORTH AND EAST OF THE
AREA. HOWEVER A SLIGHT INCREASE IN MOISTURE IS ANTICIPATED BRINGING
A FEW SNOW SHOWERS TO THE AREA THIS AFTERNOON AND PERHAPS AN
ISOLATED THUNDERSTORM.

***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 THEN BECOMING PARTLY CLOUDY. A
                    SLIGHT CHANCE OF THUNDERSTORMS AND SNOW SHOWERS
                    IN THE AFTERNOON.
CWR.................0.
MAX TEMPERATURE.....45.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH INCREASING TO 10 TO
                    14G22 MPH DURING THE AFTERNOON.
 UPR SLP/RIDGETOP...NORTHWEST WINDS 12 TO 16 MPH.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 8500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 14 TO 18 MPH.

                           TEMPERATURE     HUMIDITY     20-FT WIND (MPH)
                    0900        30             70           NW 5 TO 8
                    1100        40             40           NW 8 TO 11
                    1300        42             35           NW 8 TO 11
                    1500        44             31           NW 10 TO 14G22
                    1700        42             35           NW 10 TO 14G22
                    1900        29             65           NW 8 TO 11
                    2100        25             75           NW 5 TO 8

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0.
MIN TEMPERATURE.....17-22.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 10 TO 14 MPH WITH GUSTS TO
                    AROUND 22 MPH DECREASING TO 3 TO 6 MPH.
 UPR SLP/RIDGETOP...NORTHWEST 12 TO 16 MPH.
MIXING HEIGHT.......8500 FT AGL DECREASING TO 1000 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 18 TO 22 MPH.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CWR.................0.
MAX TEMPERATURE.....56-61.
MIN HUMIDITY........8-13 PERCENT.
WIND (20 FT)........SOUTHEAST 2 TO 5 MPH.
 UPR SLP/RIDGETOP...SOUTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 8500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTH 10 TO 17 MPH.

$$
FORECASTER...MICHAEL VESCIO
REQUESTED BY...MAUREEN DURRANT
TYPE OF REQUEST...PRESCRIBED
.TAG 20100505.FLATT.01/PDT