FNUS76 KPDT 191702
FWSPDT

SPOT FORECAST FOR BIG SHEEP RIDGE...NORTHEAST OREGON INTERAGENCY
DISPATCH CENTER
NATIONAL WEATHER SERVICE PENDLETON OR
1002 AM PDT SAT SEP 19 2009

FORECAST IS BASED ON REQUEST TIME OF 0930 PDT ON SEPTEMBER 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A FAST MOVING WEAK COLD FRONT WILL PASS THROUGH THE
BURN AREA THIS AFTERNOON. WINDS WILL BECOME BRIEFLY BREEZY WITH THE
FRONT. HIGH PRESSURE WILL BUILD OVER THE PACIFIC NORTHWEST SUNDAY
THROUGH AT LEAST THURSDAY MORNING WITH WARMER AND DRIER THAN NORMAL
CONDITIONS. THERMAL BANDING MAY DEVELOP MONDAY AND TUESDAY NIGHT ON
MID SLOPES...WITH STRONG NIGHTTIME INVERSIONS IN VALLEYS. A WEAK
DRY FRONT WILL MOVE THROUGH WASHINGTON THURSDAY. THE RIDGE WILL
REBUILD FRIDAY.

***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.........INCREASING CLOUDS. SCATTERED SHOWERS AND
                    ISOLATED THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................20.
MAX TEMPERATURE.....69.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 4 TO 8 MPH BECOMING NORTHWEST
                    8 TO 15 MPH WITH GUSTS TO AROUND 25 MPH AFTER
                    1300.
RIDGETOP WIND.......SOUTHWEST WINDS 6 TO 10 MPH BECOMING NORTHWEST
                    12 TO 17 MPH WITH GUSTS TO 30 IN THE AFTERNOON.
MIXING HEIGHT.......500 FT AGL INCREASING TO 5000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST 8 TO 15 MPH.
LAL.................2.
HAINES INDEX........3 (VERY LOW).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
                    ISOLATED SHOWERS IN THE EVENING.
CWR.................10.
MIN TEMPERATURE.....38.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 18 MPH DECREASING TO 7 TO 12 MPH
                    AFTER MIDNIGHT . GUSTS UP TO 30 MPH IN THE
                    EVENING.
RIDGETOP WIND.......WEST WINDS 12 TO 18 MPH DECREASING TO 10 TO 16
                    MPH AFTER MIDNIGHT.
MIXING HEIGHT.......5000 FT AGL DECREASING TO 1500 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST 13 TO 14 MPH.
LAL.................1.
HAINES INDEX........3 (VERY LOW).

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0.
MAX TEMPERATURE.....61.
MIN HUMIDITY........33 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH.
RIDGETOP WIND.......NORTHWEST WINDS 8 TO 15 MPH.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 5000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 8 TO 14 MPH.
LAL.................1.
HAINES INDEX........4 (LOW).

.FORECAST DAYS 3 THROUGH 7...
.MONDAY...
CLEAR. LOWS 38 TO 43. HIGHS 61 TO 69. EAST WINDS 2 TO 7 MPH.
.TUESDAY...
CLEAR. LOWS 45 TO 50. HIGHS 69 TO 74. SOUTHEAST WINDS 4 TO 7 MPH.
.WEDNESDAY...
CLEAR. LOWS 49 TO 54. HIGHS 74 TO 79. SOUTH WINDS 3 TO 6 MPH.
.THURSDAY...
CLEAR. LOWS 49 TO 54. HIGHS 74 TO 79.
.FRIDAY...
CLEAR. LOWS 48 TO 53. HIGHS 71 TO 76.

$$
FORECASTER...DIANN COONFIELD
REQUESTED BY...AMANDA WILSON
TYPE OF REQUEST...WILDFIRE
.TAG 20090919.BIGSH.01/PDT