Washington Weather Alerts

South Cascades
Effective: 2008-11-20T11:10:00 | Expires: 2008-11-21T06:00:00
EFFECT FROM 8 AM THIS MORNING TO 10 PM PST THIS EVENING THE SOUTH WASHINGTON CASCADES AND THE NORTH AND CENTRAL OREGON CASCADES... THE WINTER WEATHER ADVISORY FOR

South Cascades
Effective: 2008-11-20T11:10:00 | Expires: 2008-11-21T06:00:00
EFFECT FROM 8 AM THIS MORNING TO 10 PM PST THIS EVENING THE SOUTH WASHINGTON CASCADES AND THE NORTH AND CENTRAL OREGON CASCADES... THE WINTER WEATHER ADVISORY FOR

South Cascades
Effective: 2008-11-20T11:10:00 | Expires: 2008-11-21T06:00:00
EFFECT FROM 8 AM THIS MORNING TO 10 PM PST THIS EVENING THE SOUTH WASHINGTON CASCADES AND THE NORTH AND CENTRAL OREGON CASCADES... THE WINTER WEATHER ADVISORY FOR

East Columbia River Gorge
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Kittitas Valley
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Yakima Valley
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Lower Columbia Basin
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Lower Columbia Basin
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Lower Columbia Basin
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Lower Columbia Basin
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Lower Columbia Basin
Effective: 2008-11-20T12:59:00 | Expires: 2008-11-20T15:00:00
PATCHY DENSE FOG CAN BE EXPECT THIS MORNING IN THE LOWER COLUMBIA BASIN. VISIBILITY AT TIMES MAY FALL TO A QUARTER MILE IN SOME AREAS...PARTICULARLY AROUND THE PASCO AREA.

Lower Columbia Basin
Effective: 2008-11-20T12:59:00 | Expires: 2008-11-20T15:00:00
PATCHY DENSE FOG CAN BE EXPECT THIS MORNING IN THE LOWER COLUMBIA BASIN. VISIBILITY AT TIMES MAY FALL TO A QUARTER MILE IN SOME AREAS...PARTICULARLY AROUND THE PASCO AREA.

Lower Columbia Basin
Effective: 2008-11-20T12:59:00 | Expires: 2008-11-20T15:00:00
PATCHY DENSE FOG CAN BE EXPECT THIS MORNING IN THE LOWER COLUMBIA BASIN. VISIBILITY AT TIMES MAY FALL TO A QUARTER MILE IN SOME AREAS...PARTICULARLY AROUND THE PASCO AREA.

Lower Columbia Basin
Effective: 2008-11-20T12:59:00 | Expires: 2008-11-20T15:00:00
PATCHY DENSE FOG CAN BE EXPECT THIS MORNING IN THE LOWER COLUMBIA BASIN. VISIBILITY AT TIMES MAY FALL TO A QUARTER MILE IN SOME AREAS...PARTICULARLY AROUND THE PASCO AREA.

Foothills of the Blue Mountains
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Foothills of the Blue Mountains
Effective: 2008-11-19T22:10:00 | Expires: 2008-11-20T20:00:00
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 210 PM PST WED NOV 19 2008 ORZ041-044-501-WAZ024-026>029-202000- /O.CON.KPDT.AS.Y.0002.000000T0000Z-081120T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON- LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...THE DALLES...ARLINGTON...BOARDMAN... HERMISTON...HEPPNER...PENDLETON...WHITE SALMON...ELLENSBURG... SUNNYSIDE...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA 210 PM PST WED NOV 19 2008 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST THURSDAY. STRONG TEMPERATURE INVERSIONS WITH LIGHT WINDS ARE EXPECTED TO REMAIN OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND BLUE MOUNTAIN FOOTHILLS UNDER A HIGH PRESSURE RIDGE THROUGH THURSDAY MORNING. RELATIVELY LIGHT WINDS AND A LACK OF MIXING WILL RESULT IN CONTINUED TRAPPED PARTICULATE MATTER AND OTHER POLLUTANTS. A PACIFIC WEATHER SYSTEM WILL BRING INCREASING WINDS THURSDAY AFTERNOON WHICH WILL ENABLE BETTER MIXING...LIKELY RESULTING IN IMPROVED AIR QUALITY. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED AIR MOVEMENT ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE BURNING RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

Olympics
Effective: 2008-11-20T11:34:00 | Expires: 2008-11-21T02:00:00
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 334 AM PST THU NOV 20 2008 WAZ513-201945- /O.NEW.KSEW.WW.Y.0004.081120T1800Z-081121T0200Z/ OLYMPICS- 334 AM PST THU NOV 20 2008 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 6 PM PST THIS AFTERNOON FOR THE OLYMPICS ABOVE 4000 FEET... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 10 AM UNTIL 6 PM TODAY. A VIGOROUS PACIFIC STORM WILL BRING SNOW AND GUSTY WINDS TO THE AREA TODAY. SNOWFALL AMOUNTS OF 4 TO 8 INCHES ARE LIKELY BY LATE TODAY. ALTHOUGH THE SNOW LEVEL WILL PLUMMET TO NEAR 3000 FEET LATER THIS AFTERNOON...ACCUMULATIONS AT THIS LEVEL ARE EXPECTED TO BE LESS THAN THREE INCHES.

West Slopes Northern Cascades an
Effective: 2008-11-20T11:34:00 | Expires: 2008-11-21T05:00:00
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 334 AM PST THU NOV 20 2008 WAZ518-519-201945- /O.NEW.KSEW.WW.Y.0004.081120T2000Z-081121T0500Z/ WEST SLOPES NORTHERN CASCADES AND PASSES- WEST SLOPES CENTRAL CASCADES AND PASSES- 334 AM PST THU NOV 20 2008 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 9 PM PST THIS EVENING FOR THE WEST SLOPES OF THE CASCADES ABOVE 3500 FEET... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM NOON TODAY UNTIL 9 PM TONIGHT. A VIGOROUS PACIFIC STORM WILL BRING SNOW AND GUSTY WINDS TO THE AREA TODAY. SNOWFALL AMOUNTS OF 4 TO 8 INCHES ARE LIKELY BY LATE THIS EVENING. ALTHOUGH THE SNOW LEVEL WILL PLUMMET TO NEAR 3000 FEET LATER THIS AFTERNOON...ACCUMULATIONS AT THIS LEVEL ARE ONLY EXPECTED TO BE IN THE ONE TO THREE INCH RANGE. PEOPLE PLANNING TRAVEL IN THE CASCADES SHOULD BE PREPARED FOR WINTER DRIVING CONDITIONS. WWW.WEATHER.GOV

West Slopes Central Cascades and
Effective: 2008-11-20T11:34:00 | Expires: 2008-11-21T05:00:00
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 334 AM PST THU NOV 20 2008 WAZ518-519-201945- /O.NEW.KSEW.WW.Y.0004.081120T2000Z-081121T0500Z/ WEST SLOPES NORTHERN CASCADES AND PASSES- WEST SLOPES CENTRAL CASCADES AND PASSES- 334 AM PST THU NOV 20 2008 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 9 PM PST THIS EVENING FOR THE WEST SLOPES OF THE CASCADES ABOVE 3500 FEET... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM NOON TODAY UNTIL 9 PM TONIGHT. A VIGOROUS PACIFIC STORM WILL BRING SNOW AND GUSTY WINDS TO THE AREA TODAY. SNOWFALL AMOUNTS OF 4 TO 8 INCHES ARE LIKELY BY LATE THIS EVENING. ALTHOUGH THE SNOW LEVEL WILL PLUMMET TO NEAR 3000 FEET LATER THIS AFTERNOON...ACCUMULATIONS AT THIS LEVEL ARE ONLY EXPECTED TO BE IN THE ONE TO THREE INCH RANGE. PEOPLE PLANNING TRAVEL IN THE CASCADES SHOULD BE PREPARED FOR WINTER DRIVING CONDITIONS. WWW.WEATHER.GOV