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Extra snow Sunday afternoon; second snowstorm Monday might deliver freezing rain too

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Extra snow Sunday afternoon; second snowstorm Monday might deliver freezing rain too


by Scott Sistek | KOMONews.com Meteorologist

A pedestrian joins visitors because it backs up heading out of downtown on State Route 99 firstly of a snowstorm Friday, Feb. 8, 2019, in Seattle. (AP Picture/Elaine Thompson)

Present Climate Advisories in Impact:

Seattle/Tacoma & Puget Sound Metro space not together with Snohomish Co.: Winter Climate Advisory from Four p.m. Sunday by means of Four a.m. Monday for 2-Four inches of recent snow. Winter Storm Watch Monday morning to Tuesday for 5-10″ of recent snow transitioning to attainable freezing rain.

Snohomish County / Northwest Inside/ Olympic Peninsula: Winter Climate Advisory from Four p.m. Sunday by means of Four a.m. Monday for 1-Four inches of recent snow. Winter Storm Watch Monday morning to Tuesday for 5-8″ of recent snow.

SW Inside: Winter Climate Advisory from midday Sunday by means of midnight for 2-Four inches of recent snow. Winter Storm Watch Monday morning to Tuesday for 5-10″ of recent snow transitioning to attainable freezing rain.

Coast: Winter Climate Advisory from midday Sunday by means of midnight for as much as 2″ of snow.

SEATTLE — Possibly you’ve got spent the final day or so shoveling a path out of the second winter storm this month.

Mom Nature’s about to spoil your work with a number of extra inches of snow within the forecast.

A 3rd winter storm is about to blow by means of the Puget Sound area Sunday night with 1-Three inches probably, with a stronger fourth storm looming for later Monday into Tuesday with a number of extra inches of snow probably. Nevertheless it’s that latter storm that has potential to deliver extreme impacts to the area as soon as once more, solely this time, we now have some new wrinkles.

Sunday’s Storm First…

The storm coming in Sunday afternoon would usually trigger Seattle Freak Out Degree Eight however now it’s going to appear to be kid’s play in comparison with the primary two we have already been by means of. A weak space of low strain is growing Sunday morning close to Vancouver Island and can drift off the coast, then rapidly swing inland by means of the Puget Sound area and I-5 hall through the late afternoon by means of the night with all of Western Washington more likely to see not less than some snow.

Snow is predicted to develop within the 3-5 p.m. timeframe and maintain snowing steadily till round 9 p.m.-ish, then taper off. Most forecast charts give a common 1-2 inch accumulations with some remoted spots that might see 3-Four inches. For a lot of it could be tough to note with 6-10″ already on the bottom, however these neatly cleaned surfaces? Buried once more.

Sunday evening will stay considerably cloudy so not fairly as exhausting of a freeze because the previous few nights, however nonetheless a freeze with lows within the mid 20s to close 30.

And Then The Bigger Winter Storm On Monday…

Monday morning is a really brief break — the commute will probably be snow-free; simply coping with any lingering points from earlier snow and ice. The Monday night commute isn’t trying snow free.

A way more potent storm — maybe the strongest one of many bunch up to now — is already developed within the Gulf of Alaska however has its eyes set on Western Washington. However since it should have spent fairly a little bit of time over the Pacific Ocean, this storm 1) Has extra moisture and a couple of) Has tapped into some hotter air. Right here, the monitor of the storm will probably be important to how the storm performs out, with a number of situations in play and maybe wildly completely different impacts throughout the area.

Usually talking, it is nonetheless chilly sufficient already that when that storm arrives, it should start as snow in all places, growing from west/southwest to east/northeast Monday afternoon. Anticipate widespread heavy snows Monday afternoon or night. Very similar to Friday, the Monday night’s commute is threatened. We lucked out on Friday that it was simply heat sufficient that the snow did not stick on the clogged freeways till after the gridlock eased. This is probably not the case on Monday, particularly if snowfall charges are heavier.

Now here is the place the monkey wrench is available in: Not like the previous two storms which have tracked offshore and to our south, preserving us on the chilly, north wind facet of the programs and everybody with snow, this storm is coming in like a extra conventional rain storm monitor from the west off the Pacific. Being on the north facet of the storm is the snow-side because it retains the winds from the chilly north. Being on the south facet is the hotter facet as you get milder marine winds from the southwest.

Thus, relying on the place precisely this storm is available in, some areas — maybe many areas — might even see a transition to freezing rain on their method to maybe then only a straight rain later. Heavy snow-to-freezing rain-to slush-fest on a number of inches of snow? Eww.

Forecast fashions are nonetheless disagreeing on the precise storm monitor; some preserving it farther south which implies heavier snow totals within the area with little to no change to rain; others transfer it farther north which places extra of the area into the snow-to-freezing rain-to-rain chance.

The farther north you might be, the extra probably it is a complete snow occasion from begin to end. Conversely, the farther south you might be, the extra probably of this transition to freezing rain and possibly even rain. The place does that transition happen? That’s the million-dollar query.

Proper now that line is…Downtown Seattle and Bellevue. Dwelling north of town, you are more likely to see heavier snow totals; dwelling south of town places you within the greater likelihood of the wintry combine transition. Once more, farther north you go is healthier likelihood of heavier snow; farther south is hotter and faster change to freezing rain and rain.

After all, freezing rain brings its personal set of complications, making energy outages extra probably attributable to added weight on bushes and roads and sidewalks even slicker. Thus not less than be ready for added energy outages and very treacherous circumstances.

Oh, and do not actually take into consideration attempting to recover from the mountains both, the place potential for 1-2 ft of recent snow is feasible with Monday’s storm. Winter Storm Watches in impact there too…

The snow/combine/rain will taper off through the day Tuesday with drying development Tuesday evening into Wednesday. This storm might have one silver lining in that mixing within the hotter air will push us out of the deep freeze sample into extra of a “it is simply chilly” sample. Extra climate programs are nonetheless due in towards the top of the week, however now snow ranges might often push greater off the ocean stage ground, giving us more difficult forecasts the place elevation and time of day have a say in who will get snow and who will get rain, versus everybody will get snow. Simpler on the commutes; tougher on the forecasters’ accuracy!

Whereas we would begin seeing the 40 diploma mark towards the top of the week, 45 nonetheless stays elusive for the foreseeable future.



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