NORTHERN OREGON CASCADES-CASCADES IN LANE COUNTY- SOUTH WASHINGTON CASCADES- INCLUDING THE CITIES OF...GOVERNMENT CAMP...DETROIT...
SANTIAM PASS...MCKENZIE BRIDGE...OAKRIDGE...WILLAMETTE PASS...
COLDWATER RIDGE VISITORS CENTER...MOUNT ST. HELENS
..SIGNIFICANT SNOWFALL OVER THE CASCADES IS EXPECTED FRIDAY AND SATURDAY...
A STRONG LOW PRESSURE SYSTEM WILL RAPIDLY STRENGTHEN INTO A POWERFUL STORM TODAY AND THURSDAY. WHILE THE CENTER OF THIS LOW PRESSURE SYSTEM IS EXPECTED TO REMAIN IN THE GULF OF ALASKA...IT WILL PUSH A STRONG COLD FRONT ONSHORE INTO THE PACIFIC NORTHWEST THURSDAY.
SNOW LEVELS WILL START OFF WELL ABOVE THE CASCADE PASSES EARLY THURSDAY...BUT ARE EXPECTED TO FALL QUICKLY AS THE FRONT MOVES ACROSS THE CASCADES THURSDAY EVENING. BY FRIDAY MORNING...
ACCUMULATING SNOW IS POSSIBLE AS LOW AS SOME OF THE CASCADE PASSES. WITH COOL UNSETTLED WEATHER EXPECTED TO CONTINUE FOR SEVERAL DAYS BEHIND THE FRONT...SNOW SHOWERS MAY CONTINUE THROUGH THE WEEKEND AS LOW AS 3000 TO 4000 FEET IN ELEVATION.
POTENTIAL SNOWFALL OF 2 TO 4 FEET ARE POSSIBLE AT AND ABOVE THE PASSES FRIDAY THROUGH SUNDAY...WITH THE HEAVIEST ACCUMULATIONS EXPECTED ABOVE THE PASSES.
Wednesday, November 4, 2009
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PORTLAND OR
342 AM PST WED NOV 4 2009
ORZ001>004-WAZ020-021-050500-
NORTH OREGON COAST-CENTRAL OREGON COAST-
COAST RANGE OF NORTHWEST OREGON-
CENTRAL COAST RANGE OF WESTERN OREGON-WILLAPA HILLS-
SOUTH WASHINGTON COAST-
INCLUDING THE CITIES OF...ASTORIA...CANNON BEACH...TILLAMOOK...
LINCOLN CITY...NEWPORT...FLORENCE...VERNONIA...JEWELL...TRASK...
GRANDE RONDE...TIDEWATER...SWISSHOME...FRANCES...RYDERWOOD...
RAYMOND...LONG BEACH...CATHLAMET
342 AM PST WED NOV 4 2009
...WIND...RAIN...AND HEAVY SEAS TO ARRIVE LATER THURSDAY...
A STRONG LOW PRESSURE SYSTEM WILL RAPIDLY STRENGTHEN INTO A
POWERFUL STORM TODAY AND THURSDAY. WHILE THE CENTER OF THIS LOW
PRESSURE SYSTEM IS EXPECTED TO REMAIN IN THE GULF OF ALASKA...IT
WILL PUSH A STRONG COLD FRONT ONSHORE INTO THE PACIFIC NORTHWEST
THURSDAY.
WINDS ASSOCIATED WITH THE FRONT MAY GUST AS HIGH AS 50 TO 60 MPH
NEAR THE BEACHES AND COASTAL HEADLANDS LATER THURSDAY...AS WELL AS
ACROSS THE HIGHER TERRAIN OF THE COAST RANGE. THE FRONT WILL
LIKELY BE ACCOMPANIED BY A PERIOD OF HEAVY RAIN...WHERE WHERE 1 TO
3 INCHES OR RAIN ARE POSSIBLE THURSDAY AND THURSDAY NIGHT. RAIN
CONTINUES AT TIMES INTO SATURDAY...WITH AN ADDITIONAL 1 TO 2
INCHES OF RAIN EXPECTED.
ANOTHER SIGNIFICANT ASPECT OF THE GULF OF ALASKA STORM SYSTEM WILL
BE THE VERY LARGE OCEAN SWELL EXPECTED TO DEVELOP AS THE STORM
STRENGTHENS. THIS SWELL MAY BEGIN IMPACTING THE SOUTH WASHINGTON
AND NORTH OREGON COAST WITH HIGH SURF AS EARLY AS THURSDAY
MORNING...AS SWELL OF 25 TO 30 FEET WILL CREATE CHAOTIC SURF ZONE
THURSDAY NIGHT THROUGH SATURDAY. THE HEAVY SURF MAY PROVIDE THE
POSSIBILITY FOR MINOR COASTAL FLOODING DURING HIGH TIDE...AND THE
LARGE BREAKERS MAY PRODUCE HAZARDOUS CONDITIONS ALONG THE BEACHES.
342 AM PST WED NOV 4 2009
ORZ001>004-WAZ020-021-050500-
NORTH OREGON COAST-CENTRAL OREGON COAST-
COAST RANGE OF NORTHWEST OREGON-
CENTRAL COAST RANGE OF WESTERN OREGON-WILLAPA HILLS-
SOUTH WASHINGTON COAST-
INCLUDING THE CITIES OF...ASTORIA...CANNON BEACH...TILLAMOOK...
LINCOLN CITY...NEWPORT...FLORENCE...VERNONIA...JEWELL...TRASK...
GRANDE RONDE...TIDEWATER...SWISSHOME...FRANCES...RYDERWOOD...
RAYMOND...LONG BEACH...CATHLAMET
342 AM PST WED NOV 4 2009
...WIND...RAIN...AND HEAVY SEAS TO ARRIVE LATER THURSDAY...
A STRONG LOW PRESSURE SYSTEM WILL RAPIDLY STRENGTHEN INTO A
POWERFUL STORM TODAY AND THURSDAY. WHILE THE CENTER OF THIS LOW
PRESSURE SYSTEM IS EXPECTED TO REMAIN IN THE GULF OF ALASKA...IT
WILL PUSH A STRONG COLD FRONT ONSHORE INTO THE PACIFIC NORTHWEST
THURSDAY.
WINDS ASSOCIATED WITH THE FRONT MAY GUST AS HIGH AS 50 TO 60 MPH
NEAR THE BEACHES AND COASTAL HEADLANDS LATER THURSDAY...AS WELL AS
ACROSS THE HIGHER TERRAIN OF THE COAST RANGE. THE FRONT WILL
LIKELY BE ACCOMPANIED BY A PERIOD OF HEAVY RAIN...WHERE WHERE 1 TO
3 INCHES OR RAIN ARE POSSIBLE THURSDAY AND THURSDAY NIGHT. RAIN
CONTINUES AT TIMES INTO SATURDAY...WITH AN ADDITIONAL 1 TO 2
INCHES OF RAIN EXPECTED.
ANOTHER SIGNIFICANT ASPECT OF THE GULF OF ALASKA STORM SYSTEM WILL
BE THE VERY LARGE OCEAN SWELL EXPECTED TO DEVELOP AS THE STORM
STRENGTHENS. THIS SWELL MAY BEGIN IMPACTING THE SOUTH WASHINGTON
AND NORTH OREGON COAST WITH HIGH SURF AS EARLY AS THURSDAY
MORNING...AS SWELL OF 25 TO 30 FEET WILL CREATE CHAOTIC SURF ZONE
THURSDAY NIGHT THROUGH SATURDAY. THE HEAVY SURF MAY PROVIDE THE
POSSIBILITY FOR MINOR COASTAL FLOODING DURING HIGH TIDE...AND THE
LARGE BREAKERS MAY PRODUCE HAZARDOUS CONDITIONS ALONG THE BEACHES.
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