Special Weather Statement
Issued by NWS Portland, OR

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PORTLAND OR
232 PM PDT WED AUG 26 2015

ORZ001>008-010>016-WAZ019>022-039-040-045-046-272200-
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...NORTH BONNEVILLE...STEVENSON...CARSON...
UNDERWOOD
232 PM PDT WED AUG 26 2015

...THE FIRST SUBSTANTIAL RAIN IN QUITE SOME TIME EXPECTED OVER
SOUTHWEST WASHINGTON AND NORTHWEST OREGON LATE THIS WEEK AND
ESPECIALLY THIS WEEKEND...

A BIG CHANGE IN THE WEATHER IS EXPECTED OVER SOUTHWEST WASHINGTON
AND NORTHWEST OREGON AS THE FIRST SUBSTANTIAL RAIN IS EXPECTED
OVER THE AREA LATE THIS WEEK AND THIS WEEKEND.

THIS COULD BE THE MOST RAIN MOST AREAS IN SOUTHWEST WASHINGTON
AND NORTHWEST OREGON HAVE SEEN SINCE MARCH. RAINFALL ACCUMULATIONS
THROUGH THE WEEKEND COULD EXCEED AN INCH OR POSSIBLY EVEN 1.5 OR 2
INCHES ALONG MUCH OF THE COAST INTO THE SOUTH WASHINGTON
CASCADES...WITH 0.75 TO 1.5 INCHES IN THE OREGON CASCADES AND 0.5
INCHES OR HIGHER IN THE VALLEYS.

THE RAIN WILL BE PRODUCED BY THE LOW PRESSURE SYSTEM CURRENTLY
LOCATED OFF THE COAST AS IT MOVES ONSHORE AND INLAND INTO THE
PACIFIC NORTHWEST LATER THIS WEEK AND THIS WEEKEND. THIS SYSTEM
WILL BE PICKING UP SUBSTANTIAL MOISTURE...SOME OF IT OF TROPICAL
ORIGINS...AND SPREADING IT ACROSS OUR AREA BENEATH A 110 KNOT
UPPER LEVEL JET. THE FIRST MAIN PERIOD OF THE HEAVIEST RAIN WILL
BE FRIDAY NIGHT INTO SATURDAY...BUT A SECOND SYSTEM WILL ADD TO
THE RAINFALL TOTALS SATURDAY NIGHT INTO SUNDAY.

IF ALL OF THIS COMES TOGETHER AS EXPECTED...THIS RAIN WILL LIKELY
EASE THE DRY FIRE CONDITIONS DRAMATICALLY OVER SOUTHWEST
WASHINGTON AND NORTHWEST OREGON FOR AT LEAST THE NEXT WEEK OR TWO.

THE RAIN WILL CAUSE PROBLEMS FOR THOSE WITH OUTDOOR ACTIVITIES
PLANNED FOR THIS WEEKEND. SNOW LEVELS WILL GENERALLY STAY ABOVE
8000 FEET...BUT CLIMBING AREA MOUNTAINS IS NOT RECOMMENDED.

IN ADDITION...OILS THAT HAVE BUILT UP ON ROADWAYS DURING THE
EXTENSIVE PERIOD OF DRY WEATHER THIS SUMMER WILL CAUSE THE ROADWAYS
TO BE EXTRA SLIPPERY DURING THE FIRST PART OF THE COMING RAIN EVENT.
BE SURE TO SLOW DOWN AND USE CAUTION...AND LEAVE EXTRA SPACE BETWEEN
YOU AND THE VEHICLE AHEAD OF YOU.


$$

FOR ADDITIONAL WEATHER INFORMATION...VISIT OUR WEB SITE AT
WWW.WEATHER.GOV/PORTLAND



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