Avalanche Watch
Areas affected:
King; Lewis; Pierce; Snohomish

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 Watch
Areas affected:
King; Skagit; Snohomish; Whatcom

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.

&&

$$

Winter Storm Warning
Areas affected:
King; Snohomish

WAZ568-171445-
/O.CON.KSEW.WS.W.0002.170117T1400Z-170119T0200Z/
CASCADES OF SNOHOMISH AND KING COUNTIES-
1031 PM PST MON JAN 16 2017

…WINTER STORM WARNING REMAINS IN EFFECT FOR THE CASCADES IN
SNOHOMISH AND KING COUNTIES FROM 6 AM TUESDAY TO 6 PM PST
WEDNESDAY…

* TOTAL SNOW ACCUMULATIONS…1 TO 2 FEET ABOVE THE 4000 FOOT
LEVEL.

* TOTAL ICE ACCUMULATIONS…A QUARTER TO HALF INCH IN THE
PASSES…MAINLY BELOW 4000 FEET.

* SOME AFFECTED LOCATIONS…SNOQUALMIE PASS AND STEVENS PASS.

* TIMING…SNOW WILL DEVELOP OVERNIGHT AND THEN BECOME HEAVY AT
TIMES ON TUESDAY. PERIODS OF SNOW…LOCALLY HEAVY…WILL PERSIST
AT ELEVATIONS ABOVE 4000 FEET THROUGH WEDNESDAY MORNING.
SNOQUALMIE PASS CAN EXPECT THE SNOW TO CHANGE OVER TO FREEZING
RAIN LATE TUESDAY MORNING OR EARLY TUESDAY AFTERNOON.

* SNOW LEVEL…AT OR NEAR THE SURFACE IN THE PASSES OR THOSE AREAS
PRONE TO EAST WINDS…RISING TO 4000 TO 4500 WEDNESDAY MORNING.

* MAIN IMPACT…HAZARDOUS WINTER DRIVING CONDITIONS ARE
ANTICIPATED TO DEVELOP EARLY TUESDAY…WITH CONDITIONS POSSIBLY
BECOMING TREACHEROUS IN SNOQUALMIE PASS DURING THE DAY TUESDAY
DUE TO ICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW, SLEET,
AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
HAZARDOUS OR IMPOSSIBLE.

&&

$$

Freezing Rain Advisory
Areas affected:
Lewis; Pierce

WAZ569-171445-
/O.CAN.KSEW.WS.W.0002.170117T1400Z-170119T0200Z/
/O.NEW.KSEW.ZR.Y.0001.170117T0800Z-170117T2000Z/
CASCADES OF PIERCE AND LEWIS COUNTIES-
1031 PM PST MON JAN 16 2017

…FREEZING RAIN ADVISORY IN EFFECT FOR THE CASCADES IN PIERCE AND
LEWIS COUNTIES UNTIL NOON PST TUESDAY…
…WINTER STORM WARNING IS CANCELLED…

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A FREEZING
RAIN ADVISORY…WHICH IS IN EFFECT UNTIL NOON PST TUESDAY. THE
WINTER STORM WARNING HAS BEEN CANCELLED.

* ICE ACCUMULATIONS…ABOUT A TENTH OF AN INCH OR LESS.

* SOME AFFECTED LOCATIONS…WHITE PASS.

* TIMING…LIGHT FREEZING RAIN IS EXPECTED TO DEVELOP LATE TONIGHT
OR EARLY TUESDAY IN THOSE AREAS MAINLY BELOW THE 5000 FOOT LEVEL
AND ARE PRONE TO EAST WINDS. EXPECT THE FREEZING RAIN TO SWITCH
OVER TO PLAIN RAIN BY MIDDAY TUESDAY.

* MAIN IMPACT…DIFFICULT TRAVEL CONDITIONS DUE TO SLIPPERY
ROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

Avalanche Watch
Areas affected:
King; Lewis; Pierce; Snohomish

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.

$$

Avalanche Warning
Areas affected:
Mason; Skagit; Whatcom

WAZ567-513-200000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WARNING
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
146 PM PST MON JAN 17 2017

THE NORTHWEST AVALANCHE CENTER HAS ISSUED AN AVALANCHE WARNING…

TIMING… 4 AM TUESDAY MORNING THROUGH 4 PM WEDNESDAY JANUARY 19TH.

LOCATION…THE OLYMPICS AND NW WASHINGTON CASCADES…INCLUDING THE
MT BAKER AREA

AVALANCHE DANGER…THE AVALANCHE DANGER IS EXPECTED TO BECOME HIGH
IN THESE AREAS WITH A NATURAL AVALANCHE CYCLE LIKELY BEGINNING
TUESDAY MORNING. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED
TUESDAY AND WEDNESDAY.

REASON…INCREASING HEAVY RAIN AND SNOW TUESDAY MORNING WILL ADD A
SIGNIFICANT LOAD TO EXISTING WEAK LAYERS FORMED DURING THE RECENT
COLD WEATHER. SNOW CHANGING TO RAIN WILL CAUSE A NATURAL AVALANCHE
CYCLE TUESDAY. ALSO…STRONG SOUTHWEST WINDS WILL BUILD NEW AND
UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS TUESDAY
THROUGH WEDNESDAY AFTERNOON.

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

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

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

$$

Flood Watch
Areas affected:
Mason; Whatcom

WAC009-027-031-045-073-171130-
/O.NEW.KSEW.FA.A.0001.170118T0200Z-170119T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLALLAM-GRAYS HARBOR-JEFFERSON-MASON-WHATCOM-
323 PM PST MON JAN 16 2017

…FLOOD WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
EVENING…

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A

* FLOOD WATCH FOR A PORTION OF NORTHWEST WASHINGTON…INCLUDING
THE FOLLOWING COUNTIES…CLALLAM…GRAYS HARBOR…JEFFERSON…
MASON AND WHATCOM.

* FROM TUESDAY EVENING THROUGH WEDNESDAY EVENING

* HEAVY RAINFALL IS EXPECTED ALONG THE SOUTHWEST SLOPES OF THE
OLYMPICS AND THE CASCADES OF WHATCOM AND SKAGIT COUNTIES. THE
SKOKOMISH RIVER IS LIKELY TO HIT FLOOD STAGE TUESDAY NIGHT AND
WEDNESDAY WHILE SOME PORTIONS OF OTHER RIVERS…INCLUDING THE
NOOKSACK…ELWHA…AND SATSOP RIVERS MAY APPROACH FLOOD STAGE
TUESDAY NIGHT OR WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

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.

&&

$$

Freezing Rain Advisory
Areas affected:
Lewis; Pierce

WAZ569-171445-
/O.CAN.KSEW.WS.W.0002.170117T1400Z-170119T0200Z/
/O.NEW.KSEW.ZR.Y.0001.170117T0800Z-170117T2000Z/
CASCADES OF PIERCE AND LEWIS COUNTIES-
1031 PM PST MON JAN 16 2017

…FREEZING RAIN ADVISORY IN EFFECT FOR THE CASCADES IN PIERCE AND
LEWIS COUNTIES UNTIL NOON PST TUESDAY…
…WINTER STORM WARNING IS CANCELLED…

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A FREEZING
RAIN ADVISORY…WHICH IS IN EFFECT UNTIL NOON PST TUESDAY. THE
WINTER STORM WARNING HAS BEEN CANCELLED.

* ICE ACCUMULATIONS…ABOUT A TENTH OF AN INCH OR LESS.

* SOME AFFECTED LOCATIONS…WHITE PASS.

* TIMING…LIGHT FREEZING RAIN IS EXPECTED TO DEVELOP LATE TONIGHT
OR EARLY TUESDAY IN THOSE AREAS MAINLY BELOW THE 5000 FOOT LEVEL
AND ARE PRONE TO EAST WINDS. EXPECT THE FREEZING RAIN TO SWITCH
OVER TO PLAIN RAIN BY MIDDAY TUESDAY.

* MAIN IMPACT…DIFFICULT TRAVEL CONDITIONS DUE TO SLIPPERY
ROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

Avalanche Watch
Areas affected:
King; Lewis; Pierce; Snohomish

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.

$$

Wind Advisory
Areas affected:
Skagit; Whatcom

WAZ001-503-506-510-516-517-171500-
/O.CON.KSEW.WI.Y.0004.170117T0800Z-170118T2300Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-NORTH COAST-CENTRAL COAST-
1049 PM PST MON JAN 16 2017

…WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST WEDNESDAY…

* WIND…25 TO 35 MPH WITH GUSTS TO 50 MPH…MAINLY NEAR THE
BEACHES AND BODIES OF WATER.

* SOME AFFECTED LOCATIONS…BELLINGHAM…FRIDAY HARBOR…OAK
HARBOR…PORT TOWNSEND…FORKS…OCEAN SHORES…WESTPORT…AND
HOQUIAM.

* TIMING…WINDY CONDITIONS WILL DEVELOP AFTER MIDNIGHT TONIGHT
AND CONTINUE THROUGH WEDNESDAY.

* IMPACTS…WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT…
ESPECIALLY FOR HIGH PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH WITH GUSTS TO 50 MPH
ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT…
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

Winter Weather Advisory
Areas affected:
Skagit; Whatcom

WAZ567-171445-
/O.CON.KSEW.WW.Y.0005.170117T0800Z-170117T2000Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
1031 PM PST MON JAN 16 2017

…WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR THE CASCADES OF
WHATCOM AND SKAGIT COUNTIES ABOVE 4000 FEET UNTIL NOON PST
TUESDAY…

* SNOW ACCUMULATIONS…4 TO 8 INCHES.

* SOME AFFECTED LOCATIONS…MOUNT BAKER SKI AREA.

* TIMING…PERIODS OF SNOW WILL CHANGE OVER TO RAIN BY LATE
MORNING TUESDAY.

* MAIN IMPACT…SNOW COVERED ROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE
DRIVING.

&&

$$

Avalanche Warning
Areas affected:
Mason; Skagit; Whatcom

WAZ567-200000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WARNING
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
145 PM PST MON JAN 17 2017

THE NORTHWEST AVALANCHE CENTER HAS ISSUED AN AVALANCHE WARNING…

TIMING… 4 AM TUESDAY MORNING THROUGH 4 PM WEDNESDAY JANUARY 19TH.

LOCATION…THE NW WASHINGTON CASCADES…INCLUDING THE MT BAKER AREA

AVALANCHE DANGER…THE AVALANCHE DANGER IS EXPECTED TO BECOME HIGH
IN THESE AREAS WITH A NATURAL AVALANCHE CYCLE LIKELY BEGINNING
TUESDAY MORNING. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED
TUESDAY AND WEDNESDAY.

REASON…INCREASING HEAVY RAIN AND SNOW TUESDAY MORNING WILL ADD A
SIGNIFICANT LOAD TO EXISTING WEAK LAYERS FORMED DURING THE RECENT
COLD WEATHER. SNOW CHANGING TO RAIN WILL CAUSE A NATURAL AVALANCHE
CYCLE TUESDAY. ALSO…STRONG SOUTHWEST WINDS WILL BUILD NEW AND
UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS TUESDAY
THROUGH WEDNESDAY AFTERNOON.

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

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

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

$$

Avalanche Warning
Areas affected:
Mason; Skagit; Whatcom

WAZ567-513-200000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WARNING
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
146 PM PST MON JAN 17 2017

THE NORTHWEST AVALANCHE CENTER HAS ISSUED AN AVALANCHE WARNING…

TIMING… 4 AM TUESDAY MORNING THROUGH 4 PM WEDNESDAY JANUARY 19TH.

LOCATION…THE OLYMPICS AND NW WASHINGTON CASCADES…INCLUDING THE
MT BAKER AREA

AVALANCHE DANGER…THE AVALANCHE DANGER IS EXPECTED TO BECOME HIGH
IN THESE AREAS WITH A NATURAL AVALANCHE CYCLE LIKELY BEGINNING
TUESDAY MORNING. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED
TUESDAY AND WEDNESDAY.

REASON…INCREASING HEAVY RAIN AND SNOW TUESDAY MORNING WILL ADD A
SIGNIFICANT LOAD TO EXISTING WEAK LAYERS FORMED DURING THE RECENT
COLD WEATHER. SNOW CHANGING TO RAIN WILL CAUSE A NATURAL AVALANCHE
CYCLE TUESDAY. ALSO…STRONG SOUTHWEST WINDS WILL BUILD NEW AND
UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS TUESDAY
THROUGH WEDNESDAY AFTERNOON.

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

ADDITIONAL INFORMATION…
THIS WARNING 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 Watch
Areas affected:
King; Skagit; Snohomish; Whatcom

WAZ567-161415-
/O.NEW.KSEW.WS.A.0002.170117T0200Z-170117T1700Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
935 PM PST SUN JAN 15 2017

…WINTER STORM WATCH IN EFFECT FOR THE CASCADES IN WHATCOM AND
SKAGIT COUNTIES FROM MONDAY EVENING THROUGH TUESDAY MORNING…

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

* SNOW ACCUMULATIONS…10 TO 16 INCHES.

* SOME AFFECTED LOCATIONS…MOUNT BAKER SKI AREA.

* TIMING…SNOW WILL DEVELOP ON MONDAY AND BECOME HEAVY AT TIMES
MONDAY NIGHT BEFORE CHANGING OVER TO RAIN ON TUESDAY.

* SNOW LEVEL…SNOW LEVEL NEAR 3000 FEET…RISING TO 6000 FEET ON
TUESDAY.

* MAIN IMPACT…HAZARDOUS WINTER DRIVING CONDITIONS.

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.

&&

$$

Winter Storm Warning
Areas affected:
King; Snohomish

WAZ568-171445-
/O.CON.KSEW.WS.W.0002.170117T1400Z-170119T0200Z/
CASCADES OF SNOHOMISH AND KING COUNTIES-
1031 PM PST MON JAN 16 2017

…WINTER STORM WARNING REMAINS IN EFFECT FOR THE CASCADES IN
SNOHOMISH AND KING COUNTIES FROM 6 AM TUESDAY TO 6 PM PST
WEDNESDAY…

* TOTAL SNOW ACCUMULATIONS…1 TO 2 FEET ABOVE THE 4000 FOOT
LEVEL.

* TOTAL ICE ACCUMULATIONS…A QUARTER TO HALF INCH IN THE
PASSES…MAINLY BELOW 4000 FEET.

* SOME AFFECTED LOCATIONS…SNOQUALMIE PASS AND STEVENS PASS.

* TIMING…SNOW WILL DEVELOP OVERNIGHT AND THEN BECOME HEAVY AT
TIMES ON TUESDAY. PERIODS OF SNOW…LOCALLY HEAVY…WILL PERSIST
AT ELEVATIONS ABOVE 4000 FEET THROUGH WEDNESDAY MORNING.
SNOQUALMIE PASS CAN EXPECT THE SNOW TO CHANGE OVER TO FREEZING
RAIN LATE TUESDAY MORNING OR EARLY TUESDAY AFTERNOON.

* SNOW LEVEL…AT OR NEAR THE SURFACE IN THE PASSES OR THOSE AREAS
PRONE TO EAST WINDS…RISING TO 4000 TO 4500 WEDNESDAY MORNING.

* MAIN IMPACT…HAZARDOUS WINTER DRIVING CONDITIONS ARE
ANTICIPATED TO DEVELOP EARLY TUESDAY…WITH CONDITIONS POSSIBLY
BECOMING TREACHEROUS IN SNOQUALMIE PASS DURING THE DAY TUESDAY
DUE TO ICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW, SLEET,
AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
HAZARDOUS OR IMPOSSIBLE.

&&

$$

Avalanche Watch
Areas affected:
King; Lewis; Pierce; Snohomish

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 Watch
Areas affected:
King; Skagit; Snohomish; Whatcom

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.

&&

$$

Wind Advisory
Areas affected:
Skagit; Whatcom

WAZ001-503-506-510-516-517-171500-
/O.CON.KSEW.WI.Y.0004.170117T0800Z-170118T2300Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-NORTH COAST-CENTRAL COAST-
1049 PM PST MON JAN 16 2017

…WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST WEDNESDAY…

* WIND…25 TO 35 MPH WITH GUSTS TO 50 MPH…MAINLY NEAR THE
BEACHES AND BODIES OF WATER.

* SOME AFFECTED LOCATIONS…BELLINGHAM…FRIDAY HARBOR…OAK
HARBOR…PORT TOWNSEND…FORKS…OCEAN SHORES…WESTPORT…AND
HOQUIAM.

* TIMING…WINDY CONDITIONS WILL DEVELOP AFTER MIDNIGHT TONIGHT
AND CONTINUE THROUGH WEDNESDAY.

* IMPACTS…WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT…
ESPECIALLY FOR HIGH PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH WITH GUSTS TO 50 MPH
ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT…
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

Winter Weather Advisory
Areas affected:
Skagit; Whatcom

WAZ567-171445-
/O.CON.KSEW.WW.Y.0005.170117T0800Z-170117T2000Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
1031 PM PST MON JAN 16 2017

…WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR THE CASCADES OF
WHATCOM AND SKAGIT COUNTIES ABOVE 4000 FEET UNTIL NOON PST
TUESDAY…

* SNOW ACCUMULATIONS…4 TO 8 INCHES.

* SOME AFFECTED LOCATIONS…MOUNT BAKER SKI AREA.

* TIMING…PERIODS OF SNOW WILL CHANGE OVER TO RAIN BY LATE
MORNING TUESDAY.

* MAIN IMPACT…SNOW COVERED ROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE
DRIVING.

&&

$$

Flood Watch
Areas affected:
Mason; Whatcom

WAC009-027-031-045-073-171130-
/O.NEW.KSEW.FA.A.0001.170118T0200Z-170119T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLALLAM-GRAYS HARBOR-JEFFERSON-MASON-WHATCOM-
323 PM PST MON JAN 16 2017

…FLOOD WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
EVENING…

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A

* FLOOD WATCH FOR A PORTION OF NORTHWEST WASHINGTON…INCLUDING
THE FOLLOWING COUNTIES…CLALLAM…GRAYS HARBOR…JEFFERSON…
MASON AND WHATCOM.

* FROM TUESDAY EVENING THROUGH WEDNESDAY EVENING

* HEAVY RAINFALL IS EXPECTED ALONG THE SOUTHWEST SLOPES OF THE
OLYMPICS AND THE CASCADES OF WHATCOM AND SKAGIT COUNTIES. THE
SKOKOMISH RIVER IS LIKELY TO HIT FLOOD STAGE TUESDAY NIGHT AND
WEDNESDAY WHILE SOME PORTIONS OF OTHER RIVERS…INCLUDING THE
NOOKSACK…ELWHA…AND SATSOP RIVERS MAY APPROACH FLOOD STAGE
TUESDAY NIGHT OR WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

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.

&&

$$

Avalanche Warning
Areas affected:
Mason; Skagit; Whatcom

WAZ567-513-200000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WARNING
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
146 PM PST MON JAN 17 2017

THE NORTHWEST AVALANCHE CENTER HAS ISSUED AN AVALANCHE WARNING…

TIMING… 4 AM TUESDAY MORNING THROUGH 4 PM WEDNESDAY JANUARY 19TH.

LOCATION…THE OLYMPICS AND NW WASHINGTON CASCADES…INCLUDING THE
MT BAKER AREA

AVALANCHE DANGER…THE AVALANCHE DANGER IS EXPECTED TO BECOME HIGH
IN THESE AREAS WITH A NATURAL AVALANCHE CYCLE LIKELY BEGINNING
TUESDAY MORNING. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED
TUESDAY AND WEDNESDAY.

REASON…INCREASING HEAVY RAIN AND SNOW TUESDAY MORNING WILL ADD A
SIGNIFICANT LOAD TO EXISTING WEAK LAYERS FORMED DURING THE RECENT
COLD WEATHER. SNOW CHANGING TO RAIN WILL CAUSE A NATURAL AVALANCHE
CYCLE TUESDAY. ALSO…STRONG SOUTHWEST WINDS WILL BUILD NEW AND
UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS TUESDAY
THROUGH WEDNESDAY AFTERNOON.

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

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

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

$$

Avalanche Warning
Areas affected:
Mason; Skagit; Whatcom

WAZ567-200000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WARNING
NORTHWEST AVALANCHE CENTER SEATTLE WASHINGTON
RELAYED BY NATIONAL WEATHER SERVICE SEATTLE WASHINGTON
145 PM PST MON JAN 17 2017

THE NORTHWEST AVALANCHE CENTER HAS ISSUED AN AVALANCHE WARNING…

TIMING… 4 AM TUESDAY MORNING THROUGH 4 PM WEDNESDAY JANUARY 19TH.

LOCATION…THE NW WASHINGTON CASCADES…INCLUDING THE MT BAKER AREA

AVALANCHE DANGER…THE AVALANCHE DANGER IS EXPECTED TO BECOME HIGH
IN THESE AREAS WITH A NATURAL AVALANCHE CYCLE LIKELY BEGINNING
TUESDAY MORNING. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED
TUESDAY AND WEDNESDAY.

REASON…INCREASING HEAVY RAIN AND SNOW TUESDAY MORNING WILL ADD A
SIGNIFICANT LOAD TO EXISTING WEAK LAYERS FORMED DURING THE RECENT
COLD WEATHER. SNOW CHANGING TO RAIN WILL CAUSE A NATURAL AVALANCHE
CYCLE TUESDAY. ALSO…STRONG SOUTHWEST WINDS WILL BUILD NEW AND
UNSTABLE WIND SLAB ON LEE SLOPES AT HIGHER ELEVATIONS TUESDAY
THROUGH WEDNESDAY AFTERNOON.

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

ADDITIONAL INFORMATION…
THIS WARNING 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 Watch
Areas affected:
King; Skagit; Snohomish; Whatcom

WAZ567-161415-
/O.NEW.KSEW.WS.A.0002.170117T0200Z-170117T1700Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
935 PM PST SUN JAN 15 2017

…WINTER STORM WATCH IN EFFECT FOR THE CASCADES IN WHATCOM AND
SKAGIT COUNTIES FROM MONDAY EVENING THROUGH TUESDAY MORNING…

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

* SNOW ACCUMULATIONS…10 TO 16 INCHES.

* SOME AFFECTED LOCATIONS…MOUNT BAKER SKI AREA.

* TIMING…SNOW WILL DEVELOP ON MONDAY AND BECOME HEAVY AT TIMES
MONDAY NIGHT BEFORE CHANGING OVER TO RAIN ON TUESDAY.

* SNOW LEVEL…SNOW LEVEL NEAR 3000 FEET…RISING TO 6000 FEET ON
TUESDAY.

* MAIN IMPACT…HAZARDOUS WINTER DRIVING CONDITIONS.

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.

&&

$$