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4 products issued by NWS for:

Coastal Flood Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE PORTLAND OR
659 PM PST SAT DEC 20 2014

ORZ001-002-WAZ021-210600-
/O.CAN.KPQR.SU.Y.0005.000000T0000Z-141221T0300Z/
/O.CON.KPQR.CF.Y.0003.141221T1700Z-141221T2300Z/
NORTH OREGON COAST-CENTRAL OREGON COAST-SOUTH WASHINGTON COAST-
659 PM PST SAT DEC 20 2014

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM PST
SUNDAY FOR THE SOUTH WASHINGTON COAST AND NORTH AND CENTRAL
OREGON COAST FOR MINOR TIDAL OVERFLOW...

...HIGH SURF ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN PORTLAND HAS CANCELLED THE HIGH
SURF ADVISORY. A COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM
9 AM TO 3 PM PST SUNDAY.

* SEAS AND SURF: SEAS HAVE SUBSIDED AND HIGH SURF CONDITIONS HAVE
  ENDED.

* TIDES: THE OBSERVED HIGH TIDE DURING THE LATE MORNING ON SUNDAY
  IS EXPECTED TO REACH AROUND 11 FT AT TOKE POINT WASHINGTON...AND
  BETWEEN 10 FT AND 11 FT FOR ASTORIA AND SOUTH BEACH OREGON...
  WITH TIDAL ANOMALIES OF AROUND 1.5 FT. THIS HIGH TIDE WILL OCCUR
  AROUND 11 AM AND THESE VALUES ARE SIMILAR TO THE TIDES OBSERVED
  TODAY.

* RIVER FLOWS: COASTAL RIVERS FLOW ARE INCREASING DUE RECENT
  ABUNDANT RAINFALL. WITH EXPECTED ADDITIONAL RAINFALL
  TONIGHT...THE WILLAPA...NEHALEM...WILSON...SILETZ...ALSEA...AND
  SIUSLAW RIVERS ARE ALL EXPECTED TO BE AT OR NEAR BANKFULL.
  RIVERS MAY CONTINUE TO RUN NEAR FLOOD FLOWS DURING THE MIDDAY
  MONDAY HIGH TIDE AS WELL.

* IMPACTS: AFFECTED LOCATIONS WILL INCLUDE LOW LYING AREAS NEAR
  BAYS AND SLOUGHS...HIGHWAY 101...HIGHWAY 126 EAST OF
  FLORENCE... AND THE LOWER REACHES OF COASTAL RIVERS.
  HISTORICALLY...TIDES AROUND 11 FT PAIRED WITH NEAR FLOOD FLOWS
  ON LOCAL RIVERS HAVE RESULTED IN MINOR TIDAL OVERFLOW NEAR
  RAYMOND...TILLAMOOK... NEHALEM...WALDPORT...AND DEPOE BAY. THE
  GREATEST IMPACTS ARE LIKELY BETWEEN 9 AM AND 2 PM ON SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES
WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE.

&&

$$


HTTP://WWW.WEATHER.GOV/PORTLAND




Flood Warning

FLOOD STATEMENT
NATIONAL WEATHER SERVICE PORTLAND OR
523 PM PST SAT DEC 20 2014

NW Oregon/SW Washington Coastal Rivers Bulletin



...The Flood Warning continues for the following rivers in
Washington...Oregon...

  Grays River near Rosburg affecting Wahkiakum County
  Nehalem River near Foss affecting Clatsop and Tillamook Counties
  Wilson River near Tillamook affecting Tillamook County
  Trask River near Tillamook affecting Tillamook County
  Siletz River at Siletz affecting Lincoln County
  Alsea River Near Tidewater affecting Benton and Lincoln Counties
  Siuslaw River near Mapleton affecting Lane County

River forecasts are based on observed and forecast rainfall and
temperatures, and they include current and planned reservoir
releases.

For the latest river stages and forecasts, visit
weather.gov/portland.

The next update for these locations will be issued by 1:00 am Sunday.

ORC041-210923-
/O.EXT.KPQR.FL.W.0020.141221T0113Z-141222T0449Z/
/SILO3.1.ER.141221T0014Z.141221T0600Z.141221T2249Z.NO/
523 PM PST SAT DEC 20 2014

The Flood Warning continues for
  The Siletz River at Siletz.
* from this afternoon to Sunday evening or until the warning is
  cancelled.
* At 4 PM Saturday the stage was...16.3 feet / 19500 cfs.
* Flood stage is 16.0 feet and flood flow is 19000 cfs.
* Forecast...This river will crest around 18.0 ft around 10 PM Saturday.
  After the crest, this river is forecast to fall below flood stage
  Sunday afternoon.
* Impact...Above 18 ft, Expect minor flooding of a small housing
  development near mile post 8 down stream from Mack Landing.
  Widespread lowland and pasture land flooding also occurs at this
  level. Flooding may be exacerbated during high tide.

&&

LAT...LON 4470 12394 4490 12401 4489 12391 4472 12386

$$



Flood Warning

FLOOD STATEMENT
NATIONAL WEATHER SERVICE PORTLAND OR
523 PM PST SAT DEC 20 2014

NW Oregon/SW Washington Coastal Rivers Bulletin



...The Flood Warning continues for the following rivers in
Washington...Oregon...

  Grays River near Rosburg affecting Wahkiakum County
  Nehalem River near Foss affecting Clatsop and Tillamook Counties
  Wilson River near Tillamook affecting Tillamook County
  Trask River near Tillamook affecting Tillamook County
  Siletz River at Siletz affecting Lincoln County
  Alsea River Near Tidewater affecting Benton and Lincoln Counties
  Siuslaw River near Mapleton affecting Lane County

River forecasts are based on observed and forecast rainfall and
temperatures, and they include current and planned reservoir
releases.

For the latest river stages and forecasts, visit
weather.gov/portland.

The next update for these locations will be issued by 1:00 am Sunday.

ORC003-041-210922-
/O.EXT.KPQR.FL.W.0021.141221T1107Z-141222T1735Z/
/TIDO3.1.ER.141221T1107Z.141222T0000Z.141222T1135Z.NO/
523 PM PST SAT DEC 20 2014

The Flood Warning continues for
  The Alsea River Near Tidewater.
* from late tonight to Monday morning or until the warning is
  cancelled.
* At 5 PM Saturday the stage was...14.0 feet / 13100 cfs.
* Flood stage is 18.0 feet and flood flow is 19500 cfs.
* Minor flooding is forecast.
* Forecast...This river will rise above flood stage around 3 AM
  Sunday and is expected to crest near 19.5 ft around 4 PM Sunday.
* Impact...Above 18 ft, Expect minor flooding of low-lying pasture
  land, roads, and a few structures close to the river.

&&

LAT...LON 4437 12382 4440 12402 4444 12402 4441 12382

$$



Flood Watch

FLOOD WATCH
NATIONAL WEATHER SERVICE PORTLAND OR
821 AM PST SAT DEC 20 2014


ORZ001>008-010>016-WAZ019>022-039-040-045-046-210600-
/O.CON.KPQR.FA.A.0003.141221T0000Z-141223T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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...
NETARTS...PACIFIC CITY...LINCOLN CITY...NEWPORT...
CAPE FOULWEATHER...YACHATS...FLORENCE...VERNONIA...JEWELL...
SUNSET SUMMIT...LEES CAMP...TRASK...GRANDE RONDE...BURNT WOODS...
TIDEWATER...SWISSHOME...VENETA...ST. HELENS...CLATSKANIE...
HILLSBORO...PORTLAND...WILSONVILLE...OREGON CITY...GRESHAM...
TROUTDALE...SALEM...MCMINNVILLE...WOODBURN...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...CAPE DISAPPOINTMENT...LONGVIEW...KELSO...
CASTLE ROCK...VANCOUVER...BATTLE GROUND...RIDGEFIELD...
WASHOUGAL...YACOLT...AMBOY...TOUTLE...ARIEL...LAKE MERWIN...
YALE LAKE...COUGAR...CARSON...STEVENSON...UNDERWOOD
821 AM PST SAT DEC 20 2014

...FLOOD WATCH REMAINS IN EFFECT FROM 4 PM PST THIS AFTERNOON
THROUGH MONDAY AFTERNOON FOR SOUTHWEST WASHINGTON AND NORTHWEST
OREGON...

THE FLOOD WATCH CONTINUES FOR SOUTHWEST WASHINGTON AND NORTHWEST
OREGON FROM 4 PM PST THIS AFTERNOON THROUGH MONDAY AFTERNOON.


A CLASSIC ATMOSPHERIC RIVER TYPE PRECIPITATION EVENT IS SETTING UP
OVER THE PACIFIC NORTHWEST TODAY...WHICH WILL CONTINUE TO IMPACT
THE REGION INTO EARLY MONDAY. A VERY LONG FETCH OF MOISTURE WITH
ORIGINS WEST TO THE SOUTH CHINA SEA IS FEEDING INTO THIS
SYSTEM...BRINGING THE POTENTIAL FOR VERY LARGE RAINFALL TOTALS
ACROSS THE REGION. A DEEP AND MOIST WESTERLY FLOW WILL DEVELOP
TODAY AND CONTINUE THROUGH SUNDAY. WITH THE FLOW FORECASTED TO
REMAIN PERPENDICULAR TO THE COAST RANGE AND CASCADES FOR AN
EXTENDED PERIOD OF TIME...EXPECT STRONG OROGRAPHIC ENHANCEMENT TO
LEAD TO THE HIGHEST RAINFALL TOTALS OVER THE MOUNTAINS. THE COAST
RANGE...FOOTHILLS AND CASCADES ARE EXPECTED TO SEE IN THE RANGE OF
6 TO 12 INCHES OF RAIN...WITH LOCALLY HIGHER AMOUNTS POSSIBLE.
LOWER BUT STILL SIGNIFICANT TOTALS ARE EXPECTED FOR THE LOWER
TERRAIN. PROJECTED RAINFALL ALONG THE COAST IS FORECASTED TO BE
AROUND 4 TO 8 INCHES. THE INTERIOR LOWLANDS SHOULD SEE 1 TO 4
INCHES...WITH THE HIGHEST AMOUNTS CLOSER TO THE CASCADE FOOTHILLS.

GIVEN THE LATEST FORECASTED RAINFALL TOTALS...IT APPEARS THAT
THERE IS THE STRONG POTENTIAL FOR FLOODING OVER THE WEEKEND ON
NUMEROUS RIVERS AND TRIBUTARIES DRAINING THE COAST RANGE AND
CASCADES. A FEW RIVERS MAY EVEN REACH MAJOR FLOOD STAGE. THE
CURRENT RIVER STAGE FORECASTS INDICATE THAT THE FASTER RESPONDING
RIVERS COULD REACH FLOOD STAGE AS EARLY AS TONIGHT. THERE ARE ALSO LIKELY
TO BE IMPACTS FROM URBAN AND SMALL STREAM FLOODING AND FLOODING
ALONG LOW LYING PASTURE LAND.

IN ADDITION TO THE FLOODING CONCERNS...EXCESSIVE RAINFALL HAS THE
POTENTIAL TO CREATE LANDSLIDES...DEBRIS FLOWS...AND EXCESSIVE RUNOFF
IN THE VICINITY OF RECENT WILDFIRE BURN SCARS. BURN SCARS FROM TWO
LARGE FIRES THIS SUMMER...THE 36 PIT FIRE IN THE CLACKAMAS RIVER
BASIN NEAR ESTACADA AND THE DECEPTION COMPLEX NEAR OAKRIDGE...WILL
BE PARTICULARLY VULNERABLE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

LANDSLIDES AND DEBRIS FLOWS ARE POSSIBLE DURING THIS FLOOD EVENT.
PEOPLE...STRUCTURES AND ROADS LOCATED BELOW STEEP SLOPES...IN
CANYONS AND NEAR THE MOUTHS OF CANYONS MAY BE AT SERIOUS RISK
FROM RAPIDLY MOVING LANDSLIDES.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

THE NEXT UPDATE FOR THIS WATCH WILL BE ISSUED BY 10 PM SATURDAY
NIGHT.

&&

$$




U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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