NowCast ZoneCast Warnings/Advisories Hourly Track Special
Yakima, Washington, United States  Lat: 46.59N, Lon: 120.53W
Wx Zone: WAZ027
Warnings, Watches and Advisories:
 

HYDROLOGIC OUTLOOK

...HEAVY RAIN COULD CAUSE FLOODING BY LATE THIS WEEKEND...
HEAVY RAIN IS FORECAST OVER WESTERN WASHINGTON SATURDAY AND
SUNDAY. STRONG WESTERLY FLOW ALOFT WILL BRING HEAVY RAIN AT TIMES
TO THE COAST AND OLYMPICS ON SATURDAY. HEAVY RAIN WILL SPREAD
INTO THE CASCADES SATURDAY AFTERNOON. MODELS CURRENTLY TAPER RAIN
OVER THE OLYMPICS ON SUNDAY BUT KEEP HEAVY RAIN GOING IN THE
CASCADES...ESPECIALLY OVER THE CASCADES FROM ABOUT KING COUNTY
SOUTH. THE TOTAL MODEL RAINFALL OVER ABOUT 48 HOURS FROM SATURDAY
MORNING THROUGH SUNDAY NIGHT AMOUNTS TO AROUND FOUR TO SIX INCHES
OVER THE OLYMPICS AND CENTRAL CASCADES WITH A TEN-INCH BULLSEYE
OVER MOUNT RAINIER.
THESE RAINFALL AMOUNTS ARE ENOUGH TO CAUSE FLOODING. AT THIS TIME
THE RIVERS MOST LIKELY TO FLOOD ARE THE ONES FLOWING OFF THE
CASCADES OF KING...PIERCE...AND LEWIS COUNTIES...AS WELL AS THE
UNUSUALLY FLOOD-PRONE SKOKOMISH RIVER IN MASON COUNTY. ANY FLOODING
WOULD LIKELY BEGIN SUNDAY WITH CRESTS SUNDAY NIGHT OR MONDAY. THE
EXACT POSITION OF THE STREAM OF MOISTURE IS UNCERTAIN SO THIS
OUTLOOK COVERS THE ENTIRE OLYMPIC PENINSULA AND ALL OF THE
CASCADES RIVERS.

COASTAL FLOOD WATCH

...HIGH SURF ADVISORY IN EFFECT FROM 10 AM FRIDAY TO 6 AM PST
SATURDAY...
...COASTAL FLOOD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT FROM 10 AM FRIDAY TO 6 AM PST
SATURDAY. A COASTAL FLOOD WATCH HAS ALSO BEEN ISSUED. THIS
COASTAL FLOOD WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON.
* TIMING...AN EXTENSIVE AREA OF HIGH WAVES THAT IS BEING GENERATED
WELL OFFSHORE WILL MOVE ONTO THE WASHINGTON COAST AS AN
ENERGETIC SWELL STARTING MIDDAY FRIDAY AND CONTINUING THROUGH
SATURDAY. THE HIGH SWELL MAY COMBINE WITH A HIGH TIDE ON
SATURDAY TO PRODUCE SOME COASTAL FLOODING MIDDAY
SATURDAY...AROUND THE TIME OF HIGH TIDE.
* IMPACTS...HIGH SURF WILL MAKE IT IS EXTREMELY DANGEROUS TO FISH
OR OBSERVE WAVES FROM ROCKS FRIDAY AFTERNOON THROUGH SATURDAY.
SIGNIFICANT WAVE RUN UP ON BEACHES IS LIKELY. POTENTIAL
SIGNIFICANT BEACH EROSION IS POSSIBLE. LOW LYING COASTAL
COMMUNITIES SUCH AS WESTPORT...OCEAN SHORES AND LA PUSH MAY SEE
SOME FLOODING AROUND THE SATURDAY HIGH TIDE.
* TIME OF HIGH TIDE...AROUND 11 AM PST SATURDAY ON THE CENTRAL AND
NORTH WASHINGTON COAST.
* PREDICTED TIDE...AT NEAH BAY THE PREDICTED HIGH TIDE IS AROUND
10.5 FEET. THE TIDE TABLE PREDICTION IS AROUND 9.2 FEET. TIDAL
ANOMALIES WILL LIKELY BE HIGHER THAN THIS DUE TO BREAKING WAVE
ACTION AND TIDAL ANOMALIES WILL BE SIMILAR ALONG THE ENTIRE
COASTLINE OF NORTH AND CENTRAL WASHINGTON.
* SEAS...23 TO 25 FEET FRIDAY AFTERNOON AND FRIDAY NIGHT AND 20 TO
22 FEET ON SATURDAY.

HIGH SURF ADVISORY

...HIGH SURF ADVISORY IN EFFECT FROM 10 AM FRIDAY TO 6 AM PST
SATURDAY...
...COASTAL FLOOD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT FROM 10 AM FRIDAY TO 6 AM PST
SATURDAY. A COASTAL FLOOD WATCH HAS ALSO BEEN ISSUED. THIS
COASTAL FLOOD WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON.
* TIMING...AN EXTENSIVE AREA OF HIGH WAVES THAT IS BEING GENERATED
WELL OFFSHORE WILL MOVE ONTO THE WASHINGTON COAST AS AN
ENERGETIC SWELL STARTING MIDDAY FRIDAY AND CONTINUING THROUGH
SATURDAY. THE HIGH SWELL MAY COMBINE WITH A HIGH TIDE ON
SATURDAY TO PRODUCE SOME COASTAL FLOODING MIDDAY
SATURDAY...AROUND THE TIME OF HIGH TIDE.
* IMPACTS...HIGH SURF WILL MAKE IT IS EXTREMELY DANGEROUS TO FISH
OR OBSERVE WAVES FROM ROCKS FRIDAY AFTERNOON THROUGH SATURDAY.
SIGNIFICANT WAVE RUN UP ON BEACHES IS LIKELY. POTENTIAL
SIGNIFICANT BEACH EROSION IS POSSIBLE. LOW LYING COASTAL
COMMUNITIES SUCH AS WESTPORT...OCEAN SHORES AND LA PUSH MAY SEE
SOME FLOODING AROUND THE SATURDAY HIGH TIDE.
* TIME OF HIGH TIDE...AROUND 11 AM PST SATURDAY ON THE CENTRAL AND
NORTH WASHINGTON COAST.
* PREDICTED TIDE...AT NEAH BAY THE PREDICTED HIGH TIDE IS AROUND
10.5 FEET. THE TIDE TABLE PREDICTION IS AROUND 9.2 FEET. TIDAL
ANOMALIES WILL LIKELY BE HIGHER THAN THIS DUE TO BREAKING WAVE
ACTION AND TIDAL ANOMALIES WILL BE SIMILAR ALONG THE ENTIRE
COASTLINE OF NORTH AND CENTRAL WASHINGTON.
* SEAS...23 TO 25 FEET FRIDAY AFTERNOON AND FRIDAY NIGHT AND 20 TO
22 FEET ON SATURDAY.

HYDROLOGIC OUTLOOK

...HEAVY RAIN EXPECTED OVER THE MOUNTAINS THIS WEEKEND WITH
RISING RIVER LEVELS...
A STORM SYSTEM WILL MOVE THROUGH THE PACIFIC NORTHWEST THIS
WEEKEND WITH HEAVY RAIN EXPECTED LATE SATURDAY THROUGH SUNDAY.
THE HEAVIEST RAIN IS EXPECTED ALONG THE CENTRAL AND NORTHERN
OREGON CASCADES WHERE RAIN AMOUNTS OF 5 TO 8 INCHES ARE POSSIBLE
ALONG THE CASCADE CREST. THE SNOW LEVEL WILL BE NEAR 4000 FEET ON
SATURDAY AND RISE TO NEAR 8000 FEET ON SUNDAY.
ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES...PRECIPITATION
AMOUNTS OF 4 TO 6 INCHES ARE POSSIBLE NEAR THE CREST. THE SNOW LEVEL
WILL BE AROUND 3000 FEET ON SATURDAY AND THEN RISE TO NEAR 6500
FEET BY SUNDAY AFTERNOON.
OVER THE BLUE MOUNTAINS...PRECIPITATION AMOUNTS OF 2 TO 3 INCHES
ARE POSSIBLE. THE SNOW LEVEL WILL BE AROUND 3000 FEET SATURDAY AND
RISE TO NEAR 8000 FEET ON SUNDAY.
SMALLER STREAMS AND CREEKS ARE EXPECTED TO START RISING SATURDAY
WITH THE LARGE RIVERS SEEING SUBSTANTIAL RISES SATURDAY NIGHT AND
SUNDAY. NO FLOODING IS EXPECTED ALONG THE LARGE RIVERS AT THIS
TIME...BUT SMALLER STREAMS AND CREEKS MAY SEE FLOODING SATURDAY
NIGHT AND SUNDAY.
MONITOR RIVER LEVELS AT WWW.WEATHER.GOV/PENDLETON.

AIR STAGNATION ADVISORY

..LIGHT WINDS AND INVERSIONS WILL PERSIST THROUGH MUCH OF THE
WORKWEEK. THIS WILL LEAD TOWARD STAGNANT AIR CONDITIONS OVER MUCH
OF CENTRAL AND NORTHEAST WASHINGTON.
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST
FRIDAY...
* AIR QUALITY...LIGHT WINDS AND STABLE CONDITIONS WILL INCREASE
THE POTENTIAL FOR BUILD UP OF POLLUTANTS NEAR THE SURFACE.
* TIMING...HIGH PRESSURE WILL PERSIST THROUGH FRIDAY MORNING.
* IMPACTS...PROLONGED PERIODS OF STAGNANT AIR CAN LOCK FINE
PARTICULATE MATTER CLOSE TO THE GROUND AND DEGRADE AIR QUALITY.

WINTER WEATHER ADVISORY

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM PST FRIDAY...
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE OLYMPICS IN WESTERN WASHINGTON...WHICH
IS IN EFFECT UNTIL 6 AM PST FRIDAY.
* SOME AFFECTED LOCATIONS...HURRICANE RIDGE.
* TIMING...SNOW WILL INCREASE AND BECOME HEAVY AT TIMES LATE TODAY
THROUGH TONIGHT. SNOW WILL TAPER TO SNOW SHOWERS FRIDAY MORNING.
* ACCUMULATIONS...4 TO 8 INCHES...MAINLY ABOVE 5000 FEET. SOME
CHANGE OVER BETWEEN RAIN AND SNOW IS EXPECTED AT HURRICANE
RIDGE.
* MAIN IMPACT...HAZARDOUS DRIVING CONDITIONS.

WINTER WEATHER ADVISORY

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
6 AM PST FRIDAY...
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE NORTH AND CENTRAL WASHINGTON
CASCADES...WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON TO 6 AM PST
FRIDAY.
* SOME AFFECTED LOCATIONS...MOUNT BAKER...STEVENS PASS...CRYSTAL
MOUNTAIN...MOUNT RAINIER AND PARADISE.
* TIMING...SNOW WILL INCREASE LATER THIS AFTERNOON AND BECOME
HEAVY AT TIMES OVERNIGHT. EXPECT SNOW TO TAPER TO SNOW SHOWERS
FRIDAY MORNING.
* ACCUMULATIONS...6 TO 10 INCHES...HEAVIEST ABOVE 5000 FEET. THE
TOP OF STEVENS PASS COULD GET UP TO 6 INCHES.
* MAIN IMPACT...TRAVEL THROUGH THE HIGHER PASSES WILL BECOME
HAZARDOUS AT TIMES THIS EVENING THROUGH FRIDAY MORNING.

WIND ADVISORY

...WIND ADVISORY IN EFFECT UNTIL MIDNIGHT PST TONIGHT...
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WIND
ADVISORY FOR MOST OF THE NORTH INTERIOR OF WESTERN
WASHINGTON...WHICH IS IN EFFECT UNTIL MIDNIGHT PST TONIGHT.
* SOME AFFECTED LOCATIONS...PORT TOWNSEND...THE SAN JUAN ISLANDS
INCLUDING FRIDAY HARBOR...WHIDBEY ISLAND INCLUDING OAK
HARBOR...BELLINGHAM...AND MARIETTA.
* TIMING...SOUTHEAST WINDS WILL INCREASE THROUGH MIDDAY TODAY AND
BECOME STRONGEST LATE THIS AFTERNOON AND EVENING. WINDS WILL
EASE AFTER MIDNIGHT.
* WIND...SOUTHEAST 20 TO 30 MPH WITH GUSTS TO 45 MPH.
* IMPACTS...WINDS THIS STRONG CAN BREAK TREE BRANCHES AND CAUSE
LOCAL POWER OUTAGES.

AIR STAGNATION ADVISORY

...STAGNANT CONDITIONS TO CONTINUE THROUGH THE WEEK...
.INVERSIONS WILL RESULT IN STAGNANT CONDITIONS WITH LOW CLOUDS
AND PATCHY FOG.
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
...DENSE FOG ADVISORY IS CANCELLED...
THE NATIONAL WEATHER SERVICE IN PENDLETON HAS CANCELLED THE DENSE
FOG ADVISORY. AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL
10 AM PST FRIDAY.
* TIMING: AIR STAGNATION ADVISORY THROUGH AT LEAST MIDDAY FRIDAY.
THE FOG LAYER HAS LIFTED INTO A LOW STRATUS LAYER WITH IMPROVED
VISIBILITY. THEREFORE THE DENSE FOG ADVISORY HAS BEEN CANCELLED.
* IMPACTS: POLLUTANTS TRAPPED NEAR THE SURFACE CAN NEGATIVELY
AFFECT THOSE WITH RESPIRATORY CONDITIONS.

AIR STAGNATION ADVISORY

...STAGNANT CONDITIONS TO CONTINUE THROUGH THE WEEK...
.INVERSIONS WILL RESULT IN STAGNANT CONDITIONS WITH LOW CLOUDS
AND PATCHY FOG.
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY.
* TIMING: THROUGH AT LEAST MIDDAY FRIDAY.
* LOCATIONS: VALLEYS IN AND AROUND THE LOWER COLUMBIA BASIN OF
WASHINGTON INCLUDING THE YAKIMA VALLEY.
* IMPACTS: POLLUTANTS TRAPPED NEAR THE SURFACE CAN NEGATIVELY
AFFECT THOSE WITH RESPIRATORY CONDITIONS.

SPECIAL WEATHER STATEMENT

...POTENTIAL FOR FLOODING SATURDAY NIGHT THROUGH MONDAY FOR
NORTHWEST OREGON AND SOUTHWEST WASHINGTON RIVERS...
A STORM SYSTEM DEVELOPING OVER THE PACIFIC IS EXPECTED TO BRING
HEAVY RAIN TO THE PACIFIC NORTHWEST SATURDAY EVENING THROUGH
SUNDAY. AS OF NOW...IT LOOKS LIKE THE HEAVIEST RAIN WILL BE IN
THE NORTH OREGON COAST RANGE AND THE NORTH OREGON AND SOUTH
WASHINGTON CASCADES...BUT THIS FORECAST IS UNCERTAIN.
METEOROLOGISTS WILL BE KEEPING A CLOSE EYE ON THE DEVELOPMENT OF
THIS STORM. THIS IS A CLASSIC ATMOSPHERIC RIVER EVENT THAT COULD
PRODUCE SOME AREAS OF VERY HEAVY RAIN.
RAINFALL AMOUNTS ARE CURRENTLY PROJECTED AS 5 TO 8 INCHES FOR THE
COAST...COAST RANGE AND CASCADES...WITH 2 TO 5 INCHES FOR VALLEY
LOCATIONS. SNOW LEVELS WILL BE HIGH...WELL ABOVE PASS LEVEL...FOR
MOST OF THIS EVENT. IF WE GET THESE AMOUNTS OF RAIN OR MORE...
THERE WILL LIKELY BE FLOODING ON AREA RIVERS AND CREEKS SATURDAY
NIGHT THROUGH MONDAY.
STAY UP TO DATE WITH THE LATEST NWS FORECASTS AT
WEATHER.GOV/PORTLAND OR MOBILE.WEATHER.GOV.

HYDROLOGIC OUTLOOK

...POTENTIAL FOR FLOODING SATURDAY NIGHT THROUGH MONDAY FOR
NORTHWEST OREGON AND SOUTHWEST WASHINGTON RIVERS...
A STORM SYSTEM DEVELOPING OVER THE PACIFIC IS EXPECTED TO BRING
HEAVY RAIN TO THE PACIFIC NORTHWEST SATURDAY EVENING THROUGH
SUNDAY. AS OF NOW...IT LOOKS LIKE THE HEAVIEST RAIN WILL BE IN
THE NORTH OREGON COAST RANGE AND THE NORTH OREGON AND SOUTH
WASHINGTON CASCADES...BUT THIS FORECAST IS UNCERTAIN.
METEOROLOGISTS WILL BE KEEPING A CLOSE EYE ON THE DEVELOPMENT OF
THIS STORM. THIS IS A CLASSIC ATMOSPHERIC RIVER EVENT THAT COULD
PRODUCE SOME AREAS OF VERY HEAVY RAIN.
RAINFALL AMOUNTS ARE CURRENTLY PROJECTED AS 5 TO 8 INCHES FOR THE
COAST...COAST RANGE AND CASCADES...WITH 2 TO 5 INCHES FOR VALLEY
LOCATIONS. SNOW LEVELS WILL BE HIGH...WELL ABOVE PASS LEVEL...FOR
MOST OF THIS EVENT. IF WE GET THESE AMOUNTS OF RAIN OR MORE...
THERE WILL LIKELY BE FLOODING ON AREA RIVERS AND CREEKS SATURDAY
NIGHT THROUGH MONDAY.
STAY UP TO DATE WITH THE LATEST NWS FORECASTS AT
WEATHER.GOV/PORTLAND OR MOBILE.WEATHER.GOV.