High Wind in Oregon, November 2, 2011

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1045 AM PDT WED NOV 2 2011

UPDATED FOR SHORT TERM AND 18Z AVIATION DISCUSSION

.UPDATE...A VIGOROUS STORM SYSTEM WILL APPROACH THE AREA TODAY AND
TIGHTEN PRESSURE GRADIENTS TO PRODUCE BREEZY TO WINDY CONDITIONS.
WINDY TO VERY WINDY CONDITIONS ARE EXPECTED OVER THE BLUE MOUNTAIN
FOOTHILLS...GRANDE RONDE...WALLOWA AREAS INTO THIS EVENING WHERE A
WIND ADVISORY REMAINS IN EFFECT INTO THIS EVENING.

THE STORM SYSTEM WILL SPREAD CLOUDS INTO THE AREA WITH A FEW SHOWERS
DEVELOPING ALONG THE EAST SLOPES OF THE WASHINGTON AND OREGON
CASCADES THIS EVENING. OTHERWISE AFTERNOON HIGH TEMPS WERE ADJUSTED
SOME AND AN UPDATED ZONE WAS ISSUED TO REFLECT THIS.

&&

.PREV DISCUSSION... /ISSUED 340 AM PDT WED NOV 2 2011/

SHORT TERM...TODAY THROUGH THURSDAY NIGHT...EASTERN WASHINGTON AND
OREGON WILL BE UNDER A TRANSITORY RIDGE TODAY. A FRONT WILL APPROACH
THE COAST LATE IN THE AFTERNOON. SOME HIGH CLOUDS WILL SPILL OVER
THE RIDGE WITH AN INCREASE IN CLOUDS DURING THE DAY. A TIGHT
PRESSURE GRADIENT WILL DEVELOP OVER EASTERN OREGON THIS MORNING.
HIGHER WINDS ALOFT WILL MIX TO THE SURFACE AT TIMES. FUNNELING WILL
ALSO INCREASE THE WINDS IN THE LOWER GRANDE RONDE VALLEY...
PARTICULARLY NEAR LADD AND PYLES CANYONS. THIS WILL RESULT IN VERY
WINDY CONDITIONS RIGHT ALONG THE BLUE MOUNTAIN FOOTHILLS OF OREGON
AND OVER THE GRANDE RONDE VALLEY AND PORTIONS OF WALLOWA COUNTY.
WIND ADVISORIES HAVE BEEN ISSUED FOR THESE AREAS. AS THE SURFACE
COLD FRONT AND ASSOCIATED WITH THE UPPER TROUGH MOVES ACROSS EASTERN
WASHINGTON AND OREGON LATE WEDNESDAY NIGHT AND THURSDAY SNOW LEVELS
WILL LOWER TO 2500-3500 FEET. THIS WILL RESULT IN SOME SNOW IN THE
MOUNTAINS THURSDAY.  COONFIELD

LONG TERM...FRIDAY THROUGH TUESDAY NIGHT...THE TROUGH OF LOW
PRESSURE WILL MOVE EAST OUT OF THE AREA ON FRIDAY WITH DECREASING
CHANCES OF SHOWERS. THE NEXT SYSTEM WILL DROP SOUTH AND ACROSS THE
FORECAST AREA SATURDAY AND SATURDAY NIGHT. THIS WILL BRING ANOTHER
CHANCE OF LOW ELEVATION RAIN AND MOUNTAIN SNOW. UNSETTLED CONDITIONS
WILL CONTINUE THROUGH THE WEEKEND AND INTO THE NEXT WEEK AS MODELS
INDICATE SEVERAL WEATHER DISTURBANCES MOVING THROUGH THE REGION. DMH

AVIATION...18Z TAFS...SKIES WILL BE MOSTLY CLEAR WITH SOME HIGH
CLOUDS MOVING IN ACROSS THE REGION THIS MORNING AND EARLY AFTERNOON.
 THE NEXT WEATHER SYSTEM WILL MOVE IN LATE THIS AFTERNOON AND EARLY
THIS EVENING. AHEAD OF THE WEATHER SYSTEM EXPECT SOUTHERLY SURFACE
WINDS TO INCREASE DURING THE DAY AND EVENING...MAINLY IMPACTING
KPDT...KALW...KRDM AND KBDN. THE COLD FRONT WILL SPREAD RAIN INTO
THE FORECAST AREA LATE TONIGHT INTO THURSDAY MORNING.  THERE MAY BE
A RAIN SNOW MIX AT KBDN AND KRDM THURSDAY. FOR THE MOST PART EXPECT
VFR CONDITIONS TO PREVAIL AT ALL TAF SITES FOR THE NEXT 24 HOURS.
MVFR AND POSSIBLY IFR CONDITIONS COULD OCCUR TOMORROW MORNING AT
KBDN AND KRDM DUE TO PRECIPITATION LOWERING VISIBILITIES AND CIGS.
DGW

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  36  45  29 /   0  20  60  30
ALW  56  36  46  33 /   0  20  60  30
PSC  53  34  51  29 /   0  30  20  20
YKM  47  29  47  28 /   0  40  20  20
HRI  53  32  49  27 /   0  30  30  20
ELN  45  28  47  25 /   0  50  20  20
RDM  54  30  47  19 /   0  40  50  30
LGD  46  32  43  28 /   0  10  70  50
GCD  44  28  42  30 /   0  10  70  40
DLS  55  35  50  35 /   0  80  20  30

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...WIND ADVISORY UNTIL 11 PM PDT THIS EVENING ORZ507-508.

     WIND ADVISORY UNTIL 11 PM PDT THIS EVENING ORZ049-050.

WA...NONE.
&&

THREAT INDEX
TODAY : GREEN
THURSDAY : GREEN
FRIDAY : 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

97/99/89

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1137 AM PDT WED NOV 2 2011

UPDATED SPOTTER INFORMATION STATEMENT

ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
031230-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON-
EAST SLOPES OF THE OREGON CASCADES-
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 OF WASHINGTON-
EAST SLOPES OF THE WASHINGTON CASCADES-SIMCOE HIGHLANDS-
535 AM PDT WED NOV 2 2011

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

.DAY ONE...TODAY AND TONIGHT

STRONG WIND
     GRANDE RONDE VALLEY, WALLOWA COUNTY, FOOTHILLS OF THE NORTHERN
     BLUE MOUNTAINS OF OREGON, NORTHERN BLUE MOUNTAINS OF OREGON,
     FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON

A STRONG PRESSURE GRADIENT AND LOW LEVEL JET WILL RESULT IN VERY
WINDY CONDITIONS ACROSS PARTS OF EASTERN OREGON TODAY. WIND
ADVISORIES HAVE BEEN ISSUED FOR THE GRANDE RONDE VALLEY...WALLOWA
COUNTY...AND OREGON FOOTHILLS OF THE BLUES FROM THIS MORNING THROUGH
THIS EVENING. PLEASE REFER TO THE LATEST PDXNPWPDT FOR MORE DETAILS.
WINDY CONDITIONS WILL ALSO OCCUR OVER HIGHER ELEVATIONS IN EASTERN
OREGON.

RAIN CHANGING TO RAIN AND SNOW ABOVE 3000 FEET WILL SPREAD ACROSS
THE AREA TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SNOW THURSDAY
     EAST SLOPES OF THE WASHINGTON CASCADES, SIMCOE HIGHLANDS,
     KITTITAS VALLEY, YAKIMA VALLEY, FOOTHILLS OF THE BLUE
     MOUNTAINS OF WASHINGTON, NORTHWEST BLUE MOUNTAINS OF
     WASHINGTON, NORTH CENTRAL OREGON, EAST SLOPES OF THE OREGON
     CASCADES, GRANDE RONDE VALLEY, WALLOWA COUNTY, FOOTHILLS OF
     THE NORTHERN BLUE MOUNTAINS OF OREGON, NORTHERN BLUE MOUNTAINS
     OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, FOOTHILLS OF THE
     SOUTHERN BLUE MOUNTAINS OF OREGON, JOHN DAY BASIN, OCHOCO-JOHN
     DAY HIGHLANDS

SNOW SATURDAY
     EAST SLOPES OF THE WASHINGTON CASCADES, SIMCOE HIGHLANDS,
     KITTITAS VALLEY, YAKIMA VALLEY, FOOTHILLS OF THE BLUE
     MOUNTAINS OF WASHINGTON, NORTHWEST BLUE MOUNTAINS OF
     WASHINGTON, NORTH CENTRAL OREGON, EAST SLOPES OF THE OREGON
     CASCADES, GRANDE RONDE VALLEY, WALLOWA COUNTY, FOOTHILLS OF
     THE NORTHERN BLUE MOUNTAINS OF OREGON, NORTHERN BLUE MOUNTAINS
     OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, FOOTHILLS OF THE
     SOUTHERN BLUE MOUNTAINS OF OREGON, JOHN DAY BASIN, OCHOCO-JOHN
     DAY HIGHLANDS

A STRONG COLD FRONT WILL SWEEP ACROSS WASHINGTON AND OREGON
THURSDAY. RAIN AND SNOW SHOWERS WILL MOVE ACROSS EASTERN WASHINGTON
AND OREGON. SNOW LEVELS WILL LOWER TO NEAR 2000-3000 FEET
THURSDAY...AND DROP TO 1500-2500 THURSDAY NIGHT. 1-4 INCHES OF SNOW
ARE EXPECTED OVER THE MOUNTAINS.

ANOTHER COLD FRONT WILL RAIN AND SNOW WILL MOVE THROUGH SATURDAY. A
CHANCE OF RAIN AND MOUNTAIN SNOW WILL CONTINUE FOR THE REST OF THE
WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TODAY FOR STRONG WINDS IN THE
AREAS MENTIONED IN THE DAY ONE DISCUSSION.

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.