Wildfire in Oregon, July 13, 2009

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
200 PM PDT MON JUL 13 2009

.SHORT TERM...TONIGHT THROUGH THURSDAY.  THE LOW PRESSURE WILL MOVE
EAST OF THE FORECAST AREA BY 9 PM WITH SHOWERS ENDING OVER THE
EXTREME EASTERN PARTS OF OREGON AND WASHINGTON.  STRONG WINDS IN THE
KITTITAS VALLEY WILL CONTINUE THROUGH THE EVENING WITH SOME BREEZY
TO WINDY CONDITIONS IN THE LOWER COLUMBIA BASIN AND FOOTHILLS OF THE
BLUE MOUNTAINS.  PATCHY BLOWING DUST REMAINS POSSIBLE IN THE BASIN
AREA THROUGH THE EVENING.  BY EARLY TUESDAY...HEIGHTS WILL BEGIN
BUILDING OVER THE AREA WITH DRY CONDITIONS AND A RETURN TO ABOVE
NORMAL TEMPERATURES...ESPECIALLY WEDNESDAY AND THURSDAY.

.LONG TERM...THURSDAY NIGHT THROUGH MONDAY...THE RIDGE OF HIGH
PRESSURE WILL CONTINUE TO BRING FAIR AND DRY CONDITIONS THROUGH
FRIDAY. TEMPERATURES WILL BE VERY WARM ON FRIDAY WITH MANY LOCATIONS
IN THE LOWER ELEVATIONS APPROACHING THE 100 DEGREE MARK. A LOW
PRESSURE SYSTEM WILL THEN MOVE INTO BRITISH COLUMBIA DURING THE
WEEKEND...PUSHING A DISTURBANCE ACROSS THE REGION. THIS WILL HELP
INCREASE WINDS AND CLOUD COVER SATURDAY AND SUNDAY. WHILE FORECAST
MODELS ARE IN DISAGREEMENT WITH THE STRENGTH OF THE LOW...MOISTURE
APPEARS TO BE LIMITED AND THEREFORE HAVE LEFT THE FORECAST DRY FOR
THE WEEKEND. DMH

&&

.PREVIOUS AVIATION DISCUSSION...18Z TAFS...WITH THE DEPARTING LOW
PRESSURE SYSTEM THIS MORNING ISOLATED TO SCATTERED SHOWERS ARE
POSSIBLE MAINLY ACROSS THE BLUE MOUNTAINS AND EASTWARD WITH VICINITY
SHOWERS AT KALW AND KPDT INTO THIS AFTERNOON. THE ENTIRE REGION WILL
SEE CLOUD COVER DECREASE FROM WEST TO EAST THIS AFTERNOON AND
OVERNIGHT. SURFACE WINDS WILL BE BREEZY AT KDLS...KPSC AND KPDT
TODAY WITH SUSTAINED WINDS BETWEEN 15 TO 25 KTS THIS AFTERNOON.
WINDS WILL DECREASE AFTER SUNSET. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  86  56  92 /   0   0   0   0
ALW  56  87  60  93 /  10   0   0   0
PSC  55  89  55  96 /   0   0   0   0
YKM  54  88  59  93 /   0   0   0   0
HRI  52  88  54  95 /   0   0   0   0
ELN  53  88  55  92 /   0   0   0   0
RDM  36  88  42  93 /   0   0   0   0
LGD  47  84  48  91 /  10   0   0   0
GCD  46  86  50  93 /   0   0   0   0
DLS  54  90  56  93 /   0   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...WIND ADVISORY UNTIL 9 PM PDT THIS EVENING FOR WAZ026.

&&

THREAT INDEX
TUESDAY : GREEN
WEDNESDAY : GREEN
THURSDAY : GREEN

GREEN: NONE OR LIMITED NEED FOR WATCHES, WARNINGS, OR ADVISORIES.
YELLOW: A FEW WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT.
RED: NUMEROUS WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT.

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

93/84/84

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1220 PM PDT MON JUL 13 2009

ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-141415-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
CENTRAL OREGON-LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-
WALLOWA COUNTY-FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN-
OCHOCO-JOHN DAY HIGHLANDS-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
1220 PM PDT MON JUL 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.

.DAY ONE...TONIGHT

THUNDERSTORMS
     NORTHWEST BLUE MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY

STRONG WIND
     KITTITAS VALLEY

AN UPPER LEVEL LOW IS MOVING OUT OF NORTHEASTERN OREGON THIS
AFTERNOON WITH A FEW THUNDERSTORMS LINGERING IN EXTREME NORTHEAST
OREGON.

STRONG WINDS WILL BE SEEN ACROSS THE KITTITAS VALLEY BEHIND THE
EXITING WEATHER SYSTEM.  NORTHWEST WIND 30 TO 40 MPH WITH GUSTS TO
50 MPH CAN BE EXPECTED.  A WIND ADVISORY (PDXNPWPDT) IS IN EFFECT
THROUGH 9PM THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

AN UPPER LEVEL RIDGE WILL KEEP EASTERN WASHINGTON AND OREGON DRY
TUESDAY THROUGH SUNDAY. A FEW SHOWERS ARE POSSIBLE NEAR THE
WASHINGTON CASCADES SATURDAY AND SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:

WWW.WRH.NOAA.GOV/PDT/CURRENTHAZARDS/HWO.HTML

ALL LETTERS IN THE ABOVE URL ARE LOWER CASE...EXCEPT THE H IN
CURRENTHAZARDS.