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HYDROLOGIC OUTLOOK
WAC033-057-061-073-141200-

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE SEATTLE WA
336 PM PST SAT FEB 13 2016

...HEAVY RAIN POSSIBLE IN THE NORTH AND CENTRAL CASCADES LATE
THIS WEEKEND INTO EARLY NEXT WEEK...

STRONG MOIST WESTERLY FLOW MAY BRING RISING SNOW LEVELS AND
PERIODS OF HEAVY RAIN LATE THIS WEEKEND INTO EARLY NEXT WEEK.
MODELS SHOW HEAVY RAIN FOCUSED OVER THE NORTH AND CENTRAL CASCADES
STARTING SUNDAY NIGHT AND CONTINUING THROUGH MONDAY NIGHT AND
POSSIBLY INTO TUESDAY. THE RIVERS FLOWING OFF THE WEST SLOPES OF
THE CASCADES IN WHATCOM...SKAGIT...SNOHOMISH AND KING COUNTIES
WILL SEE RISES WITH A FEW RIVERS CLOSE TO FLOOD STAGE. IF THIS
SYSTEM STALLS OR IF PRECIPITATION AMOUNTS INCREASE THEN RIVER
FLOODING MAY OCCUR OVER THIS PERIOD.

$$

WWW.WEATHER.GOV/SEATTLE

HYDROLOGIC OUTLOOK
IDZ001>004-WAZ037-038-041>044-142300-

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE SPOKANE WA
255 PM PST SAT FEB 13 2016

...MILD, WET, AND BREEZY CONDITIONS MAY LEAD TO STREAM RISES...

AN UNSETTLED WEATHER PATTERN WILL CONTINUE THROUGH THE WEEKEND AND
INTO EARLY NEXT WEEK. EXPECT RISING SNOW LEVELS AND MILD
TEMPERATURES LEADING TO MELTING OF THE MID AND LOW ELEVATION SNOW.
THE SNOW MELT IN COMBINATION WITH RAIN MAY LEAD TO RISES ON MANY
OF THE AREA`S STREAMS. TEMPERATURES ON MONDAY...TUESDAY AND
WEDNESDAY ARE FORECAST TO BRING EVEN WARMER TEMPERATURES WITH SOME
NEAR RECORD HIGHS POSSIBLE. TEMPERATURES ALONG WITH WARM WINDS
WILL AID IN INCREASING SNOWMELT.

THE COEUR D`ALENE, ST JOE, PALOUSE, AND LITTLE SPOKANE RIVERS AND
THEIR FEEDER STREAMS CAN EXPECT RISES THROUGH MID WEEK. OTHER
AREAS EXPECTED TO BE MOST IMPACTED BY MELTING SNOW ARE THOSE WITH
SIGNIFICANT LOW AND MID LEVEL ELEVATION SNOW COVERAGE, NAMELY THE
WATERVILLE PLATEAU AND PALISADES CREEK AREA, AS WELL AS THE
VALLEYS OF NORTHERN WASHINGTON AND IDAHO. FORTUNATELY MOST OF THE
SOILS IN THE AFFECTED AREAS ARE NOT FROZEN AND WILL BE ABLE TO
ABSORB SOME OF THE SNOWMELT RUNOFF.

MAIN IMPACTS WILL BE PONDING AND NUISANCE FLOODING IN LOW LYING
AREAS WITH POOR DRAINAGE OR DUE TO SNOW-CLOGGED STORM DRAINS AND
CULVERTS.

THIS IS AN EVOLVING SITUATION AND FORECASTS MAY CHANGE AS THE
WE GET CLOSER TO THE PERIOD OF INTEREST. THOSE WITH INTERESTS ALONG
RIVERS AND STREAMS OR IMPACTED AREAS SHOULD BE AWARE OF FUTURE
OUTLOOKS, WATCHES, OR WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TO VIEW CURRENT RIVER FORECASTS:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=OTX

$$

HYDROLOGIC OUTLOOK
WAZ520-141230-

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
419 AM PST SAT FEB 13 2016

...HEAVY RAIN MAY CLIP THE CENTRAL CASCADES LATE THIS WEEKEND...

STRONG WESTERLY FLOW WILL CAUSE RISING SNOW LEVELS WITH HEAVY RAIN
POSSIBLE LATE THIS WEEKEND THROUGH MONDAY IN THE CENTRAL
CASCADES...MAINLY OVER WESTERN KITTITAS COUNTY. WEATHER MODELS
SHOW THE HEAVY RAIN FOCUSED OVER THE NORTH CASCADES OF
WASHINGTON..BUT THERE IS A CHANCE THE HEAVY RAIN AREA WILL SHIFT
SOUTH. THE RIVERS FLOWING OFF THE EAST SLOPES OF THE CASCADES WILL
SEE SIGNIFICANT RISES...BUT AT THIS TIME ARE NOT EXPECTED TO REACH
FLOOD STAGE. IF THIS SYSTEM STALLS OR IF PRECIPITATION AMOUNTS
INCREASE THEN RIVER FLOODING MAY OCCUR OVER THIS PERIOD.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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