Winter Weather Warnings / Watches / Advisories
Issued by NWS Seattle/Tacoma, WA

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WWUS46 KSEW 172303
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
303 PM PST Sun Dec 17 2017

WAZ567-181400-
/O.NEW.KSEW.WS.A.0004.171219T0000Z-171220T0900Z/
/O.CON.KSEW.WW.Y.0045.000000T0000Z-171218T1800Z/
Cascades of Whatcom and Skagit Counties-
Including Concrete, Hamilton, Lyman, Maple Falls, Deming,
Mount Baker Ski Area, and Newhalem
303 PM PST Sun Dec 17 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
MONDAY ABOVE 3500 FEET...
...WINTER STORM WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
LATE TUESDAY NIGHT...

* WHAT...Snow expected above 3500 feet. Plan on slippery road
  conditions. Total snow accumulations of 6 to 11 inches, with
  local amounts up to 15 inches, are expected. Heavy snow possible
  Monday night through late Tuesday night with an additional 1 to
  2 feet of snow.

* WHERE...Cascade mountains of Whatcom and Skagit Counties,
  including Mount Baker Ski Area.

* WHEN...For the Winter Weather Advisory, until 10 AM PST
  Monday. For the Winter Storm Watch, from Monday afternoon
  through late Tuesday night.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times. Significant reductions in visibility are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

WAZ568-181400-
/O.CON.KSEW.WW.Y.0045.000000T0000Z-171218T1800Z/
Cascades of Snohomish and King Counties-
Including Stevens Pass
303 PM PST Sun Dec 17 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
MONDAY ABOVE 3500 FEET...

* WHAT...Snow expected above 3500 feet. Plan on slippery road
  conditions. Total snow accumulations of 3 to 11 inches, with
  local amounts up to 15 inches, are expected.

* WHERE...Cascade mountains of Snohomish and King Counties
  including Stevens Pass.

* WHEN...Until 10 AM PST Monday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

WAZ513-181400-
/O.NEW.KSEW.WS.A.0004.171219T0000Z-171220T0000Z/
Olympics-
Including Amanda Park, Quinault, and Hurricane Ridge
303 PM PST Sun Dec 17 2017

...WINTER STORM WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
TUESDAY AFTERNOON...

* WHAT...Heavy snow possible. Plan on difficult travel conditions.
  Total snow accumulations of 1 to 2 feet are possible.

* WHERE...Olympic mountains including Hurricane Ridge.

* WHEN...From Monday afternoon through Tuesday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility are
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

www.weather.gov/seattle



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