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Special Weather Statement

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PORTLAND OR
500 AM PST FRI NOV 28 2014

ORZ001>008-010>016-WAZ019>022-039-040-045-046-290000-
NORTH OREGON COAST-CENTRAL OREGON COAST-
COAST RANGE OF NORTHWEST OREGON-
CENTRAL COAST RANGE OF WESTERN OREGON-LOWER COLUMBIA-
GREATER PORTLAND METRO AREA-CENTRAL WILLAMETTE VALLEY-
SOUTH WILLAMETTE VALLEY-NORTHERN OREGON CASCADE FOOTHILLS-
NORTHERN OREGON CASCADES-CASCADE FOOTHILLS IN LANE COUNTY-
CASCADES IN LANE COUNTY-UPPER HOOD RIVER VALLEY-
WESTERN COLUMBIA RIVER GORGE-CENTRAL COLUMBIA RIVER GORGE-
SOUTH WASHINGTON CASCADES-WILLAPA HILLS-SOUTH WASHINGTON COAST-I-
5 CORRIDOR IN COWLITZ COUNTY-GREATER VANCOUVER AREA-
SOUTH WASHINGTON CASCADE FOOTHILLS-
INCLUDING THE CITIES OF...ASTORIA...CANNON BEACH...TILLAMOOK...
LINCOLN CITY...NEWPORT...YACHATS...FLORENCE...VERNONIA...JEWELL...
SUNSET SUMMIT...LEES CAMP...TRASK...GRANDE RONDE...BURNT WOODS...
TIDEWATER...SWISSHOME...VENETA...ST. HELENS...CLATSKANIE...
HILLSBORO...PORTLAND...OREGON CITY...GRESHAM...SALEM...
MCMINNVILLE...WILSONVILLE...STAYTON...DALLAS...EUGENE...
SPRINGFIELD...CORVALLIS...ALBANY...SANDY...ESTACADA...
SILVER FALLS STATE PARK...SWEET HOME...GOVERNMENT CAMP...
DETROIT...SANTIAM PASS...VIDA...JASPER...LOWELL...COTTAGE GROVE...
MCKENZIE PASS...MCKENZIE BRIDGE...OAKRIDGE...WILLAMETTE PASS...
PARKDALE...ODELL...CORBETT...ROOSTER ROCK...MULTNOMAH FALLS...
CASCADE LOCKS...HOOD RIVER...COLDWATER RIDGE VISITORS CENTER...
MOUNT ST. HELENS...WIND RIVER VALLEY...WILLAPA...FRANCES...
ELK MOUNTAIN...RYDERWOOD...RAYMOND...LONG BEACH...OCEAN PARK...
NASELLE...CATHLAMET...LONGVIEW...KELSO...CASTLE ROCK...
VANCOUVER...BATTLE GROUND...WASHOUGAL...TOUTLE...ARIEL...
LAKE MERWIN...YALE LAKE...COUGAR...CARSON...STEVENSON...UNDERWOOD
450 AM PST FRI NOV 28 2014

...UNSEASONABLY MILD WEATHER TO GIVE WAY TO MUCH COLDER
TEMPERATURES AND POSSIBLE LOW ELEVATION SNOW BEGINNING TONIGHT...

WHILE SOUTHWEST WASHINGTON AND NORTHWEST OREGON HAVE BEEN
EXPERIENCING RECORD SETTING WARMTH FOR THE LAST SEVERAL DAYS...A
MAJOR CHANGE IN THE WEATHER PATTERN IS ON THE WAY. A STRONG COLD
FRONT WILL MOVE THROUGH THE REGION FROM NORTH TO SOUTH TONIGHT.
WHILE SNOW LEVELS WILL INITIALLY BE HIGH...THEY WILL LOWER
DRAMATICALLY BEHIND THE FRONT. AS A RESULT...POST FRONTAL SHOWERS
MAY FALL AS A MIX OF RAIN AND SNOW DOWN TO THE VALLEY FLOOR LATE
TONIGHT AND SATURDAY BEFORE THE PRECIPITATION ENDS BY SATURDAY NIGHT.

TRAVEL WILL BECOME INCREASINGLY DIFFICULT THROUGH THE CASCADES AND
EVENTUALLY THE FOOTHILLS TONIGHT AS RAIN CHANGES TO SNOW AND STARTS
TO ACCUMULATE ON AREA ROADS. AN INITIAL BURST OF HEAVY SNOW IS
EXPECTED WITH THE COLD FRONT TONIGHT...THEN SNOW SHOWERS WILL
CONTINUE THROUGH MUCH OF SATURDAY. SEVERAL INCHES OF NEW SNOW ARE
POSSIBLE IN THESE AREAS BY THE TIME SNOW TAPERS OFF SATURDAY NIGHT.

OFFSHORE FLOW WILL THEN DEVELOP SATURDAY NIGHT...WITH GUSTY EAST
WINDS CONTINUING THROUGH SUNDAY. AREAS IN AND AROUND THE WESTERN
COLUMBIA RIVER GORGE MAY SEE WIND GUSTS OF 50 TO 70 MPH AT TIMES
SUNDAY. THE EASTERLY FLOW WILL ALSO USHER IN A PERIOD OF MUCH COLDER
TEMPERATURES AS IT PULLS IN AIR FROM AN ARCTIC AIR MASS ON THE EAST
SIDE OF THE CASCADES.

$$




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