Air Stagnation Advisory
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 238 PM PST THU JAN 15 2009 ORZ023-024-026-029>031-160645- /O.EXT.KMFR.AS.Y.0001.000000T0000Z-090120T1200Z/ CENTRAL DOUGLAS COUNTY-EASTERN CURRY COUNTY AND JOSEPHINE COUNTY- JACKSON COUNTY-KLAMATH BASIN- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- INCLUDING THE CITIES OF...ROSEBURG...SUTHERLIN...GREEN... GRANTS PASS...MEDFORD...ASHLAND...ALTAMONT...KLAMATH FALLS... BEATTY...BLY...CHEMULT...CRESCENT...GILCHRIST...SPRAGUE RIVER... LAKEVIEW 238 PM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST TUESDAY... THE AIR STAGNATION ADVISORY IS NOW IN EFFECT UNTIL 4 AM PST TUESDAY. STATIONARY HIGH PRESSURE OVER THE REGION WILL ALLOW A STRONG INVERSION TO PERSIST OVER THE VALLEYS AND THIS WILL CAUSE THE AIR UNDERNEATH THE INVERSION TO BECOME INCREASINGLY STAGNANT. FOG...SMOKE...AND INCREASING PARTICULATES CAN BE EXPECTED IN THE TRAPPED LAYER. STAGNANT CONDITIONS WILL BE THE MOST PREVALENT IN THE KLAMATH AND LAKEVIEW BASINS. AN AIR STAGNATION ADVISORY INDICATES THAT POLLUTION WILL INCREASE DUE TO LIMITED MOVEMENT WITHIN AN AIRMASS ACROSS THE ADVISORY AREA. $$ STOCKTON
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PORTLAND OR 232 PM PST THU JAN 15 2009 ORZ005>009-014-WAZ022-023-039-162200- /O.EXT.KPQR.AS.Y.0001.000000T0000Z-090119T0100Z/ LOWER COLUMBIA-GREATER PORTLAND METRO AREA- CENTRAL WILLAMETTE VALLEY-SOUTH WILLAMETTE VALLEY- WESTERN COLUMBIA RIVER GORGE-UPPER HOOD RIVER VALLEY-I- 5 CORRIDOR IN COWLITZ COUNTY-GREATER VANCOUVER AREA- INCLUDING THE CITIES OF...ST. HELENS...CLATSKANIE...HILLSBORO... PORTLAND...OREGON CITY...GRESHAM...SALEM...MCMINNVILLE...DALLAS... EUGENE...CORVALLIS...ALBANY...HOOD RIVER...CASCADE LOCKS... MULTNOMAH FALLS...PARKDALE...ODELL...LONGVIEW...KELSO... CASTLE ROCK...STEVENSON...SKAMANIA...VANCOUVER...BATTLE GROUND... WASHOUGAL 232 PM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 5 PM PST SUNDAY FOR THE LOWER INLAND VALLEYS OF NORTHWEST OREGON AND SOUTHWEST WASHINGTON... THE AIR STAGNATION ADVISORY IS NOW IN EFFECT UNTIL 5 PM PST SUNDAY. STRONG HIGH PRESSURE WILL REMAIN OVER THE PACIFIC NORTHWEST THROUGH THE WEEKEND...TRAPPING COLD AIR IN THE LOW ELEVATION VALLEYS OF INTERIOR NORTHWEST OREGON AND SOUTHWEST WASHINGTON. LIGHT WINDS AND STAGNANT CONDITIONS WILL CONTINUE TO ALLOW POLLUTANTS TO ACCUMULATE IN THE ADVISORY AREA THROUGH SUNDAY AFTERNOON. AN AIR STAGNATION ADVISORY IS ISSUED WHEN LOCALLY ESTABLISHED CRITICAL VALUES OF TRANSPORT WINDS...MIXING HEIGHT...AND VENTILATION ARE EXPECTED TO PERSIST FOR AT LEAST 72 HOURS. THIS PRODUCT WILL BE UPDATED AT LEAST EVERY 24 HOURS WHEN CONDITIONS EXIST OR ARE EXPECTED TO CONTINUE. $$
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 1140 AM PST THU JAN 15 2009 IDZ001-003-004-026-027-WAZ031>034-037-038-041>044-160400- /O.CON.KOTX.AS.Y.0001.000000T0000Z-090121T0000Z/ NORTHERN PANHANDLE-IDAHO PALOUSE-CENTRAL PANHANDLE MOUNTAINS- LEWISTON AREA-LEWIS AND SOUTHERN NEZ PERCE COUNTIES- NORTHEAST BLUE MOUNTAINS-LOWER GARFIELD AND ASOTIN COUNTIES- WASHINGTON PALOUSE-MOSES LAKE AREA-NORTHEAST MOUNTAINS- OKANOGAN HIGHLANDS-WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES- OKANOGAN VALLEY-WATERVILLE PLATEAU- INCLUDING THE CITIES OF...SANDPOINT...RATHDRUM...BONNERS FERRY... PRIEST RIVER...MOSCOW...PLUMMER...POTLATCH...GENESEE...KELLOGG... ST MARIES...PINEHURST...OSBURN...WALLACE...MULLAN...LEWISTON... LAPWAI...PECK...CULDESAC...KAMIAH...CRAIGMONT...NEZPERCE... WINCHESTER...ANATONE...PEOLA...CLARKSTON...POMEROY...PULLMAN... COLFAX...ROSALIA...LA CROSSE...MOSES LAKE...EPHRATA...OTHELLO... QUINCY...COLVILLE...DEER PARK...CHEWELAH...NEWPORT... KETTLE FALLS...REPUBLIC...INCHELIUM...WENATCHEE...CHELAN... ENTIAT...CASHMERE...LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...OMAK...OKANOGAN...BREWSTER...BRIDGEPORT... OROVILLE...NESPELEM...WATERVILLE...MANSFIELD 1140 AM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. STRONG HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN OVER THE INLAND NORTHWEST THROUGH EARLY NEXT WEEK. LIGHT WINDS AND A STRONG LOW LEVEL INVERSION WILL CONTRIBUTE TO THE POTENTIAL FOR POLLUTANTS...LIKE SMOKE AND VEHICLE EXHAUST...TO BE TRAPPED IN THE LOW LEVELS OF THE ATMOSPHERE. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE TO DANGEROUS LEVELS. PERSONS WITH RESPIRATORY ILLNESS SHOULD FOLLOW THEIR PHYSICIANS ADVICE FOR DEALING WITH HIGH LEVELS OF AIR POLLUTION. $$
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 1140 AM PST THU JAN 15 2009 IDZ002-160400- /O.EXP.KOTX.FG.Y.0002.000000T0000Z-090115T2000Z/ /O.CON.KOTX.AS.Y.0001.000000T0000Z-090121T0000Z/ COEUR D`ALENE AREA- INCLUDING THE CITIES OF...COEUR D`ALENE...POST FALLS...HAYDEN 1140 AM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY... ...DENSE FOG ADVISORY WILL EXPIRE AT NOON PST TODAY... THE DENSE FOG ADVISORY WILL EXPIRE AT NOON PST TODAY. AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. FOG IS GRADUALLY MIXING OUT AROUND THE COEUR D`ALENE AREA WITH VISIBILITIES IMPROVING MARKEDLY...ESPECIALLY IN THE CITY AND AROUND LAKE COEUR D`ALENE. AT THE AIRPORT...THE VISIBILITY HAS IMPROVED TO ONE HALF OF A MILE...SO THE DENSE FOG ADVISORY WILL BE ALLOW TO EXPIRE AT NOON. A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN... USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU. IN ADDITION...TEMPERATURES ARE EXPECTED TO REMAIN BELOW FREEZING. THIS HAS THE POTENTIAL TO MAKE ROADS AND SURFACES SLIPPERY AND HAZARDOUS. THIS WILL BE ESPECIALLY TRUE FOR BRIDGES AND OVERPASSES. MOTORISTS AND PEDESTRIANS SHOULD USE CAUTION. STRONG HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN OVER THE INLAND NORTHWEST THROUGH EARLY NEXT WEEK. LIGHT WINDS AND A STRONG LOW LEVEL INVERSION WILL CONTRIBUTE TO THE POTENTIAL FOR POLLUTANTS...LIKE SMOKE AND VEHICLE EXHAUST...TO BE TRAPPED IN THE LOW LEVELS OF THE ATMOSPHERE. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE TO POTENTIALLY DANGEROUS LEVELS. PERSONS WITH RESPIRATORY ILLNESS SHOULD FOLLOW THEIR PHYSICIANS ADVICE FOR DEALING WITH HIGH LEVELS OF AIR POLLUTION. $$
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 1140 AM PST THU JAN 15 2009 WAZ035-036-160400- /O.CON.KOTX.AS.Y.0001.000000T0000Z-090121T0000Z/ /O.CON.KOTX.FG.Y.0002.000000T0000Z-090116T2000Z/ UPPER COLUMBIA BASIN-SPOKANE AREA- INCLUDING THE CITIES OF...RITZVILLE...GRAND COULEE...ODESSA... WILBUR...COULEE CITY...SPOKANE...CHENEY...DAVENPORT...ROCKFORD 1140 AM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST FRIDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST FRIDAY. WIDESPREAD FOG WILL REDUCE VISIBILITIES TO A QUARTER MILE OR LESS OVER PORTIONS OF THE WEST PLAINS AND OVER PORTIONS OF THE UPPER COLUMBIA BASIN AROUND HIGHWAY TWO. THE THICK FOG WILL LIKELY LINGER THROUGH THE DAY AND THROUGH THE NIGHT IN THESE AREAS. ELSEWHERE...VISIBILITIES HAVE IMPROVED AND THE THREAT FOR DENSE FOG HAS DIMINISHED IN THE CITY OF SPOKANE. A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN... USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU. IN ADDITION...TEMPERATURES ARE EXPECTED TO REMAIN BELOW FREEZING. THIS HAS THE POTENTIAL TO MAKE ROADS AND SURFACES SLIPPERY AND HAZARDOUS. THIS WILL BE ESPECIALLY TRUE FOR BRIDGES AND OVERPASSES. MOTORISTS AND PEDESTRIANS SHOULD USE CAUTION. STRONG HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN OVER THE INLAND NORTHWEST THROUGH EARLY NEXT WEEK. LIGHT WINDS AND A STRONG LOW LEVEL INVERSION WILL CONTRIBUTE TO THE POTENTIAL FOR POLLUTANTS...LIKE SMOKE AND VEHICLE EXHAUST...TO BE TRAPPED IN THE LOW LEVELS OF THE ATMOSPHERE. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE TO POTENTIALLY DANGEROUS LEVELS. PERSONS WITH RESPIRATORY ILLNESS SHOULD FOLLOW THEIR PHYSICIANS ADVICE FOR DEALING WITH HIGH LEVELS OF AIR POLLUTION. $$
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 1138 AM PST THU JAN 15 2009 ORZ044-501-WAZ027>029-160700- /O.CAN.KPDT.FG.Y.0001.000000T0000Z-090115T2000Z/ /O.NEW.KPDT.ZF.Y.0001.090115T1938Z-090116T2300Z/ /O.CON.KPDT.AS.Y.0001.000000T0000Z-090121T0000Z/ LOWER COLUMBIA BASIN OF OREGON- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-YAKIMA VALLEY- LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...ARLINGTON...BOARDMAN...HERMISTON... HEPPNER...PENDLETON...SUNNYSIDE...YAKIMA...CONNELL...PROSSER... TRI-CITIES...DAYTON...WAITSBURG...WALLA WALLA 1138 AM PST THU JAN 15 2009 ...FREEZING FOG ADVISORY IN EFFECT UNTIL 3 PM PST FRIDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY... ...DENSE FOG ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A FREEZING FOG ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM PST FRIDAY. THE DENSE FOG ADVISORY HAS BEEN CANCELLED. AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. A RIDGE OF HIGH PRESSURE WILL CONTINUE ACROSS EASTERN WASHINGTON AND EASTERN OREGON THIS WEEK AND INTO EARLY NEXT WEEK. LIGHT WINDS AND STRONG TEMPERATURE INVERSIONS WILL RESULT IN LITTLE MIXING OF THE AIR...WITH THE POTENTIAL FOR POLLUTANTS TO BE TRAPPED NEAR GROUND LEVEL. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON. TEMPERATURES WILL REMAIN AT OR BELOW FREEZING TODAY THROUGH FRIDAY MORNING ACROSS THE LOWER COLUMBIA BASIN...FOOTHILLS OF THE BLUE MOUNTAINS AND IN THE YAKIMA VALLEY. THEREFORE...AREAS OF FREEZING FOG...WITH OCCASIONAL SNOW FLURRIES AND LIGHT FREEZING DRIZZLE...WILL CONTINUE INTO TOMORROW. DRIVERS ARE URGED TO SLOW DOWN AND ALLOW FOR EXTRA TIME WHILE TRAVELING AS ROADWAYS MAY BE SLIPPERY...AND VISIBILITIES MAY DROP TO ONE HALF MILE OR LESS IN PLACES. A FREEZING FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO ONE QUARTER MILE OR LESS WITH TEMPERATURES AT OR BELOW FREEZING. IF DRIVING...SLOW DOWN...USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU. ALSO...BE ALERT FOR ICE FORMING ON ROADWAYS...BRIDGES AND OVERPASSES. FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT WWW.WEATHER.GOV/PENDLETON. $$
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 1138 AM PST THU JAN 15 2009 ORZ041>043-504-WAZ024-026-160700- /O.CON.KPDT.AS.Y.0001.000000T0000Z-090121T0000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON- CENTRAL OREGON-NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- INCLUDING THE CITIES OF...THE DALLES...DUFUR...MADRAS...MAUPIN... MORO...BEND...LA PINE...PRINEVILLE...REDMOND...CONDON...FOSSIL... SPRAY...WHITE SALMON...ELLENSBURG 1138 AM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. A RIDGE OF HIGH PRESSURE WILL CONTINUE ACROSS EASTERN WASHINGTON AND EASTERN OREGON THIS WEEK AND INTO EARLY NEXT WEEK. LIGHT WINDS AND STRONG TEMPERATURE INVERSIONS WILL RESULT IN LITTLE MIXING OF THE AIR...WITH THE POTENTIAL FOR POLLUTANTS TO BE TRAPPED NEAR GROUND LEVEL. AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON. $$
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 1020 AM PST THU JAN 15 2009 ...AN AIR STAGNATION ADVISORY IS NOW IN EFFECT THROUGH MONDAY... WAZ001-503>512-514-170030- /O.EXT.KSEW.AS.Y.0001.000000T0000Z-090120T0800Z/ SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR- EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY- EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA- ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA- EASTERN STRAIT OF JUAN DE FUCA- 1020 AM PST THU JAN 15 2009 ...AIR STAGNATION ADVISORY IN EFFECT THROUGH MONDAY... A STRONG INVERSION IS IN PLACE OVER THE INTERIOR LOWLANDS OF WESTERN WASHINGTON. THE LAYER OF COOL MOIST AIR BELOW THE INVERSION WILL BECOME SHALLOW WITH TIME...TRAPPING POLLUTANTS IN A STAGNANT AIR MASS. THESE CONDITIONS ARE EXPECTED TO PERSIST THROUGH MONDAY OF NEXT WEEK. PEOPLE IN WESTERN WASHINGTON SHOULD BE AWARE THAT BANS ON OUTDOOR BURNING ARE POSSIBLE IN THE WEEK AHEAD. BE SURE TO CHECK WITH YOUR LOCAL POLLUTION CONTROL AGENCY. IN THE SEATTLE AREA YOU CAN CONTACT THE PUGET SOUND CLEAN AIR AGENCY OR VISIT THEIR WEBSITE AT WWW.PSCLEANAIR.ORG PRECAUTIONARY/PREPAREDNESS ACTIONS...DO NOT BURN TRASH AND BE AWARE OF LOCAL REGULATIONS FOR BURNING. PEOPLE WITH RESPIRATORY DIFFICULTIES SUCH AS ASTHMA MAY FIND THAT STRENUOUS EXERCISE OUTDOORS IN THIS INCREASINGLY STAGNANT AIR MASS MAY WORSEN THE CONDITION. $$ 19