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Flood Advisory

FLOOD ADVISORY
NATIONAL WEATHER SERVICE PORTLAND OR
1236 PM PST SAT DEC 20 2014

ORC007-057-071-WAC049-069-202330-
/O.NEW.KPQR.FA.Y.0014.141220T2036Z-141220T2330Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YAMHILL OR-CLATSOP OR-TILLAMOOK OR-PACIFIC WA-WAHKIAKUM WA-
1236 PM PST SAT DEC 20 2014

THE NATIONAL WEATHER SERVICE IN PORTLAND HAS ISSUED A

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR...
  WESTERN YAMHILL COUNTY IN NORTHWESTERN OREGON...
  CLATSOP COUNTY IN NORTHWESTERN OREGON...
  TILLAMOOK COUNTY IN NORTHWESTERN OREGON...
  PACIFIC COUNTY IN SOUTHWESTERN WASHINGTON...
  WAHKIAKUM COUNTY IN SOUTHWESTERN WASHINGTON...

* UNTIL 330 PM PST

* AT 1230 PM PST...EMERGENCY MANAGEMENT AND LAW ENFORCEMENT HAVE
  REPORTED ISSUES WITH LOW LYING ROADS FLOODING IN NORTHWEST OREGON
  AND SOUTHWEST WASHINGTON DUE TO 1 TO 3 INCHES OF RAIN THIS
  MORNING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ASTORIA...SEASIDE...WARRENTON...CANNON BEACH...LONG BEACH...
  GARIBALDI...MANZANITA...GRAYS RIVER...JEWELL...PACIFIC CITY...
  FRANCES...TILLAMOOK...OCEAN PARK...RAYMOND...SOUTH BEND...ROCKAWAY
  BEACH...ILWACO...NETARTS...CAMP RILEA AND SKAMOKAWA.

THIS INCLUDES THE FOLLOWING HIGHWAYS IN WASHINGTON...
 U. S. HIGHWAY 101 BETWEEN MILE MARKERS 5 AND 38...AND BETWEEN MILE
MARKERS 52 AND 66.
 STATE ROUTE 4 BETWEEN MILE MARKERS 1 AND 34.
 STATE ROUTE 6 BETWEEN MILE MARKERS 1 AND 27.

THIS INCLUDES THE FOLLOWING HIGHWAYS IN OREGON...
 U.S. HIGHWAY 26 WEST OF PORTLAND BETWEEN MILE MARKERS 1 AND 30.
 U.S. HIGHWAY 30 WEST OF PORTLAND BETWEEN MILE MARKERS 74 AND 93.
 U.S. HIGHWAY 101 BETWEEN MILE MARKERS 6 AND 93.
 STATE HIGHWAY 6 BETWEEN MILE MARKERS 1 AND 28.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS FARM AND COUNTRY ROADS. DO NOT
ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES.

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.

&&

LAT...LON 4679 12337 4620 12323 4617 12342 4514 12346
      4513 12398 4623 12403 4615 12382 4618 12386
      4619 12332 4626 12349 4626 12348 4627 12408
      4664 12407 4665 12406 4637 12401 4670 12383
      4679 12410

$$

NEUMAN




Flood Warning

FLOOD WARNING
NATIONAL WEATHER SERVICE PORTLAND OR
1014 AM PST SAT DEC 20 2014

NW Oregon/SW Washington Coastal Rivers Bulletin


...The National Weather Service in Portland has issued a flood
warning 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 6 pm this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown. Don`t drive into flooded areas.
Avoid walking near riverbanks during high water.

&&

ORC007-057-210214-
/O.NEW.KPQR.FL.W.0017.141221T1153Z-141223T0435Z/
/FSSO3.1.ER.141221T1153Z.141222T0000Z.141222T2235Z.NO/
1014 AM PST SAT DEC 20 2014

The National Weather Service in Portland has issued a

* Flood Warning for
  The Nehalem River near Foss.
* from late tonight to Monday evening...or until the warning is
  cancelled.
* At 9 AM Saturday the stage was...8.0 feet / 6150 cfs.
* Flood stage is 15.0 feet and flood flow is 25900 cfs.
* Minor flooding is forecast.
* Forecast...This river is forecast to rise above flood stage around
  4 AM Sunday and is expected to crest at 18.1 ft around 4 PM Sunday.
* Impact...Above 18 ft, expect widespread flooding of low lying farm
  land and structures downstream of the Foss gauging station to
  Nehalem. Street flooding in the town of Nehalem begins at this
  point, usually during the high tide.

&&

LAT...LON 4568 12389 4573 12391 4574 12387 4573 12376 4570 12375

$$



High Surf Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE PORTLAND OR
902 AM PST SAT DEC 20 2014

ORZ001-002-WAZ021-210115-
/O.CON.KPQR.SU.Y.0005.000000T0000Z-141221T0300Z/
NORTH OREGON COAST-CENTRAL OREGON COAST-SOUTH WASHINGTON COAST-
902 AM PST SAT DEC 20 2014

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING FOR THE SOUTH WASHINGTON COAST AND THE NORTH AND CENTRAL
OREGON COAST...

A HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING.

* SEAS AND SURF: SEAS WILL REMAIN AROUND 20 FT THROUGH TODAY WITH
  PERIODS AROUND 17 SECONDS. WAVES WILL SLOWLY SUBSIDE TO AROUND
  17 FT LATE THIS EVENING. SWELL OF THIS MAGNITUDE WILL PRODUCE
  DANGEROUS SURF CONDITIONS.

* IMPACTS: EXERCISE EXTREME CAUTION ALONG BEACHES. UNPREDICTABLE
  WAVES MAY SURPRISE BEACH GOERS AND WASH MUCH FARTHER UP THE
  BEACH THAN THE PRECEDING WAVES OVER THE PREVIOUS 15 TO 30
  MINUTES. PLEASE AVOID AREA JETTIES TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH
EROSION.

&&

$$


HTTP://WWW.WEATHER.GOV/PORTLAND




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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