Snohomish County, Washington
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Snohomish County, Washington
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Avalanche Watch
WAZ019-513-520-521-042-567>569-170200-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WATCH
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
700 PM PST SUN JAN 15 2017

THE NORTHWEST AVALANCHE CENTER HAS ISSUED AN AVALANCHE WATCH...

TIMING...
MONDAY NIGHT THROUGH 6 PM TUESDAY JANUARY 17TH.

LOCATION...THE OLYMPICS AND WASHINGTON CASCADES.

AVALANCHE DANGER...THE AVALANCHE DANGER IS EXPECTED TO BECOME HIGH
IN THESE AREAS WITH VERY DANGEROUS AVALANCHE CONDITIONS DEVELOPING
MONDAY NIGHT OR TUESDAY. TRAVEL IN AVALANCHE TERRAIN IS NOT
RECOMMENDED MONDAY NIGHT AND TUESDAY AS NATURAL AND HUMAN TRIGGERED
AVALANCHES SHOULD BECOME VERY LIKELY. CHECK THE FORECAST FOR MORE
DETAILS.

REASON...INCREASING HEAVY RAIN AND SNOW BEGINNING EITHER MONDAY
NIGHT OR TUESDAY WILL LOAD THE SNOWPACK BUILDING UNSTABLE NEW STORM
LAYERS WITH WET AVALANCHES BECOMING LIKELY IN AREAS AND ELEVATIONS
THAT CHANGE TO RAIN. ALSO...STRONG SOUTHWEST WINDS WILL BUILD NEW
AND UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS THROUGHOUT
TUESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE VISIT WWW.NWAC.US FOR FURTHER INFORMATION.

ADDITIONAL INFORMATION... THIS WATCH DOES NOT APPLY TO SKI AREAS
WHERE AVALANCHE MITIGATION MEASURES ARE PERFORMED.

TRANSMITTED AT THE REQUEST OF NORTHWEST AVALANCHE CENTER IN SEATTLE,
WASHINGTON.

$$

Avalanche Watch
WAZ019-520-521-042-568-569-182000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WATCH
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
200 PM PST MON JAN 16 2017

THE NORTHWEST AVALANCHE CENTER HAS EXTENDED AN AVALANCHE WATCH...

TIMING...
TUESDAY NIGHT THROUGH 10 AM WEDNESDAY JANUARY 18TH.

LOCATION...THE EAST SLOPES AND CENTRAL AND SOUTHERN WEST
SLOPES WASHINGTON CASCADES.

AVALANCHE DANGER...THE TIMING OF INCREASED AVALANCHE DANGER HAS
SLOWED AND IS NOW EXPECTED TO BECOME HIGH IN THESE AREAS WITH VERY
DANGEROUS AVALANCHE CONDITIONS DEVELOPING LATE TUESDAY OR TUESDAY
NIGHT. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED TUESDAY
AFTERNOON THROUGH WEDNESDAY AS NATURAL AND HUMAN TRIGGERED
AVALANCHES SHOULD BECOME VERY LIKELY. CHECK THE FORECAST FOR MORE
DETAILS.

REASON...INCREASING HEAVY RAIN AND SNOW BEGINNING LATE TUESDAY OR
TUESDAY NIGHT WILL ADD SUFFICIENT LOAD TO THE SNOWPACK TO CAUSE
NATURAL AVALANCHES. WET SNOW AVALANCHES BECOMING LIKELY IN AREAS AND
ELEVATIONS THAT CHANGE TO RAIN. ALSO...STRONG SOUTHWEST WINDS WILL
BUILD NEW AND UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS
THROUGH WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE VISIT WWW.NWAC.US FOR FURTHER INFORMATION.

ADDITIONAL INFORMATION... THIS WATCH DOES NOT APPLY TO SKI AREAS
WHERE AVALANCHE MITIGATION MEASURES ARE PERFORMED.

TRANSMITTED AT THE REQUEST OF NORTHWEST AVALANCHE CENTER IN SEATTLE,
WASHINGTON.

$$

Winter Storm Warning
WAZ568-170730-
/O.UPG.KSEW.WS.A.0002.170117T1200Z-170118T0600Z/
/O.NEW.KSEW.WS.W.0002.170117T1400Z-170119T0200Z/
CASCADES OF SNOHOMISH AND KING COUNTIES-
327 PM PST MON JAN 16 2017

...WINTER STORM WARNING IN EFFECT FROM 6 AM TUESDAY TO 6 PM PST
WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR THE COMBINATION OF SNOW AND FREEZING RAIN...WHICH IS
IN EFFECT FROM 6 AM TUESDAY TO 6 PM PST WEDNESDAY. THE WINTER
STORM WATCH IS NO LONGER IN EFFECT.

* SNOW ACCUMULATIONS...UP TO 5 INCHES THROUGH TUESDAY MORNING.

* ICE ACCUMULATIONS...TOTAL ICE ACCUMULATIONS ONE HALF TO OVER ONE
INCH IS EXPECTED IN THE PASSES BELOW 5000 FEET.

* SOME AFFECTED LOCATIONS...SNOQUALMIE PASS AND STEVENS PASS.

* TIMING...SNOW WILL DEVELOP TUESDAY MORNING THEN TURN TO RAIN
MIDDAY. FREEZING RAIN WILL DEVELOP IN THE PASSES MIDDAY TUESDAY,
THEN WILL BECOME HEAVY AT TIMES TUESDAY NIGHT AND WEDNESDAY WITH
SIGNIFICANT ICE ACCUMULATIONS OF POTENTIALLY OVER ONE INCH.
HEAVIEST ACCUMULATIONS ARE EXPECTED NEAR THE SUMMIT OF
SNOQUALMIE PASS.

* SNOW LEVEL...AT OR NEAR THE SURFACE IN THE PASSES OR THOSE AREAS
PRONE TO COLD EAST WINDS EARLY TUESDAY...RISING TO 7000 FEET
TUESDAY AFTERNOON THROUGH WEDNESDAY.

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS ARE
ANTICIPATED TO DEVELOP EARLY TUESDAY MORNING...WITH CONDITIONS
BECOMING TREACHEROUS IN THE PASSES TUESDAY AFTERNOON THROUGH
WEDNESDAY IN THE PASSES DUE TO ICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS. THE PASSES
WILL LIKELY BE CLOSED AT TIMES DUE TO AVALANCHE CONTROL OR DANGER.

&&

$$

Winter Storm Watch
WAZ568-161415-
/O.NEW.KSEW.WS.A.0002.170117T0200Z-170118T0000Z/
CASCADES OF SNOHOMISH AND KING COUNTIES-
935 PM PST SUN JAN 15 2017

...WINTER STORM WATCH IN EFFECT FOR THE CASCADES IN SNOHOMISH AND
KING COUNTIES FROM MONDAY EVENING THROUGH TUESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY
AFTERNOON.

* SNOW ACCUMULATIONS...10 TO 20 INCHES.

* ICE ACCUMULATIONS...A QUARTER OF AN INCH OR MORE IS POSSIBLE IN
THE PASSES BELOW 5000 FEET.

* SOME AFFECTED LOCATIONS...SNOQUALMIE PASS AND STEVENS PASS.

* TIMING...SNOW WILL DEVELOP ON MONDAY AND THEN BECOME HEAVY AT
TIMES MONDAY NIGHT. PERIODS OF SNOW...LOCALLY HEAVY...WILL
PERSIST AT ELEVATIONS ABOVE 4000 FEET ON TUESDAY. SNOQUALMIE
PASS CAN EXPECT THE SNOW TO CHANGE OVER TO FREEZING RAIN LATE
MONDAY NIGHT OR TUESDAY MORNING...RESULTING IN THE POSSIBILITY
OF SIGNIFICANT ICE ACCUMULATIONS.

* SNOW LEVEL...AT OR NEAR THE SURFACE IN THE PASSES OR THOSE AREAS
PRONE TO COLD EAST WINDS MONDAY...RISING TO 5500 TO 6500 TUESDAY
AFTERNOON.

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS ARE
ANTICIPATED TO DEVELOP MONDAY NIGHT...WITH CONDITIONS POSSIBLY
BECOMING TREACHEROUS IN SNOQUALMIE PASS LATE MONDAY NIGHT OR
TUESDAY MORNING DUE TO ICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

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