The National Weather Service issued a ‘Winter Weather Watch’ and ‘Winter Storm Watch’ early Sunday morning, Feb. 10, warning of more snow – perhaps 5-10 inches on Monday – as well as other inclement weather coming.
“Snow expected late this afternoon and tonight with accumulations of 2 to 4 inches likely,” experts said.
“Heavy snow accumulations of 5 to 10 inches are possible Monday afternoon and Monday evening before precipitation possibly mixes with freezing rain, rain or sleet.”
*1st System: This Afternoon-Tonight*
Expect snow to push into the Puget Sound area later this afternoon and continue into the early overnight hours. There will be a BRIEF break in precipitation tomorrow morning before the next system arrives. #WAwx pic.twitter.com/rFdQk02u0z
— NWS Seattle (@NWSSeattle) February 10, 2019
*2nd System: Monday-Tuesday Night*
Here are updates for the Monday-Tuesday system. There is significant uncertainty in regards to precipitation type, especially Seattle south. Expect some additional changes to the forecast. Stay tuned for updates. #WAwx pic.twitter.com/DDkgsVc6s6
— NWS Seattle (@NWSSeattle) February 10, 2019
- The Winter Weather Advisory is in effect from 4 p.m Sunday afternoon, Feb. 10 to 4 a.m. Monday, Feb. 11.
- The Winter Storm Watch is in effect from Monday morning through Tuesday afternoon, Feb. 12.
Of the graphic below, make note of the yellow line (and notice how it’s north of Kent), of which NOAA says:
“The yellow line denotes the northern boundary of a potentially hazardous mix of winter precipitation. Because some warmer air could move into the interior Monday night and Tuesday, it could mix with the cold air already in place and lead to a mix of freezing rain, snow, and sleet to areas across the interior SOUTH of the approximated yellow line in this image.”
URGENT – WINTER WEATHER MESSAGE
National Weather Service Seattle WA
400 AM PST Sun Feb 10 2019
WAZ504-509-555-556-558-102000-
/O.NEW.KSEW.WW.Y.0015.190211T0000Z-190211T1200Z/
/O.EXT.KSEW.WS.A.0004.190211T1800Z-190213T0200Z/
Southwest Interior-Tacoma Area-East Puget Sound Lowlands-
Bellevue and Vicinity-Seattle and Vicinity-
including Lacey, Olympia, Tumwater, Yelm, Grand Mound, Rochester,
Centralia, Toledo, Tacoma, Fife, DuPont, Puyallup, Bonney Lake,
Maple Valley, Monroe, Woodinville, Arlington, Granite Falls,
Lake Stevens, Snohomish, Gold Bar, Duvall, Carnation, Fall City,
Snoqualmie, North Bend, Covington, Black Diamond, Orting,
Eatonville, Bellevue, Bothell, Kenmore, Mill Creek, Clearview,
Kirkland, Newcastle, Redmond, Sammamish, Issaquah, Seattle,
White Center, Tukwila, Renton, Burien, Des Moines, Kent,
and Federal Way
400 AM PST Sun Feb 10 2019
…WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 AM PST MONDAY…
…WINTER STORM WATCH NOW IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY AFTERNOON…
* WHAT…Snow expected late this afternoon and tonight with
accumulations of 2 to 4 inches likely. Heavy snow accumulations
of 5 to 10 inches are possible Monday afternoon and Monday
evening before precipitation possibly mixes with freezing rain,
rain or sleet.
* WHERE…Portions of west central Washington.
* WHEN…For the Winter Weather Advisory, from 4 PM this
afternoon to 4 AM PST Monday. For the Winter Storm Watch, from
Monday morning through Tuesday afternoon.
* ADDITIONAL DETAILS…Travel could be very difficult to
impossible.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving.
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.
For the latest road conditions in Washington state, call 5 1 1.
Here’s the latest forecast:
- Today: Snow, mainly after 4pm. High near 33. Wind chill values between 12 and 21. East southeast wind 10 to 14 mph becoming south in the afternoon. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.
- Tonight: Snow, mainly before 10pm. Low around 26. Wind chill values between 12 and 19. Southeast wind 10 to 15 mph becoming south southwest 16 to 21 mph. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
- Monday: Snow likely, mainly after 10am. Cloudy, with a high near 34. Wind chill values between 17 and 25. East wind around 9 mph becoming north in the afternoon. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
- Monday Night: Snow before 4am, then snow, freezing rain, and sleet. Low around 29. Wind chill values between 19 and 24. East southeast wind 11 to 14 mph. Chance of precipitation is 90%. New snow and sleet accumulation of 3 to 5 inches possible.
- Tuesday: Snow showers, freezing rain, and sleet before 10am, then rain and snow showers likely. High near 35. North wind around 7 mph. Chance of precipitation is 80%. New snow and sleet accumulation of around an inch possible.
- Tuesday Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 29. New snow accumulation of around an inch possible.
- Wednesday: A 30 percent chance of snow showers. Mostly cloudy, with a high near 34. New snow accumulation of less than a half inch possible.
- Wednesday Night: A slight chance of snow. Mostly cloudy, with a low around 21.
- Thursday: A chance of snow before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 37.
- Thursday Night: A chance of rain and snow before 10pm, then a chance of snow. Cloudy, with a low around 30.
- Friday: Rain and snow likely. Cloudy, with a high near 39.
- Friday Night: A chance of rain and snow. Cloudy, with a low around 28.
- Saturday: A chance of rain and snow. Cloudy, with a high near 37.
