PNW December 2022 - Part II

[Meatyorologist]

HRRR has precip picking up in the central Sound again late this evening into early tomorrow morning. Not sure what it sees, but given the nebulous nature of this Arctic frontal boundary's precip shield, I would not discount such a development.

[Terreboner]

7 minutes ago, Doinko said:

Now Portland better see those outflow temps on Thursday/Friday

Portland will see much colder than what the sound is seeing, a much better conduit to deliver it.

[TT-SEA]

6 minutes ago, T-Town said:

No snow yet at Alderbrook but we are managing. 

Awesome!   Totally different world and totally different weather over there.

[thisisacreativename]

Light snow now in my neighborhood.

[SnowWillarrive]

Moderate snow here now. 

[Terreboner]

2 minutes ago, Meatyorologist said:

HRRR has precip picking up in the central Sound again late this evening into early tomorrow morning. Not sure what it sees, but given the nebulous nature of this Arctic frontal boundary's precip shield, I would not discount such a development.

You're focusing too much on this "arctic" front.  The main reason why another zone will set up later is because of the westerly flow wrapping around the Olympics.  The front is aiding the zone in making it more dynamic but it (the front), is not the culprit behind it, not this time.  

[thickhog]

2 minutes ago, Terreboner said:

Portland will see much colder than what the sound is seeing, a much better conduit to deliver it.

No snow, unfortunately

[MikeInEverett]

Being right on the edge of scoring (like a few miles away) is so much worse than completely missing out. I’m gonna be able to see the snowy hills in Snohomish across the valley when we have daylight tomorrow

[Jbolin]

15 minutes ago, TT-SEA said:

Not like any traditional c-zone I have ever seen.  

 

[Meatyorologist]

There will probably be a fairly sharp E-W snowfall gradient tonight. All this snowfall is occurring due to very low level moisture... Low level terrain is playing a pretty substantial role in precip intensity.

[Meatyorologist]

Just now, Terreboner said:

You're focusing too much on this "arctic" front.  The main reason why another zone will set up later is because of the westerly flow wrapping around the Olympics.  The front is aiding the zone in making it more dynamic but it (the front), is not the culprit behind it, not this time.  

I am fully aware of that..

[The Winter Warlock]

Snow coming down now here in Covington.

[snow_wizard]

The ECMWF is being such a butt munch about Tuesday still.  Some snow in the morning, then rain, then snow again for this area.  On the plus side it treats this area well in the backwash following the low.

[Blizzard777]

Nice fluffy flakes now 

[MR.SNOWMIZER]

15 at Lynden! Extremely cold outflow event. 

[Doinko]

2 minutes ago, thickhog said:

No snow, unfortunately

That cold layer on Thursday/Friday is trending deeper. Could start as snow I think

[snow_wizard]

1 minute ago, The Winter Warlock said:

Snow coming down now here in Covington.

Yup.  Finally getting some and the radar looks good.  ECMWF shifted a tad south for tonight so we may pick up a couple of inches.

[snow_wizard]

1 minute ago, Blizzard777 said:

Nice fluffy flakes now 

Headed this way!

[Terreboner]

1 minute ago, Meatyorologist said:

I am fully aware of that..

Well, everyone on here thinks the "arctic" front (putting it in quotations because it isn't really), is the reason they may or may not see moisture ie; snow tonight.  Watch your wind flow and pay attention to what is going on in the strait, let your knowledge of this phenomenon guide you.

[MR.SNOWMIZER]

1 minute ago, snow_wizard said:

The ECMWF is being such a butt munch about Tuesday still.  Some snow in the morning, then rain, then snow again for this area.  On the plus side it treats this area well in the backwash following the low.

Going to be close. Even with that track it will be colder than shown.

[smerfylicious]

Gorgeous in Lynnwood currently

[Jbolin]

4 minutes ago, Meatyorologist said:

There will probably be a fairly sharp E-W snowfall gradient tonight. All this snowfall is occurring due to very low level moisture... Low level terrain is playing a pretty substantial role in precip intensity.

Whatever you say "sky" guy 

[Poulsbo Snowman]

MOderate snow.  30 degrees.

[snow_wizard]

I just got back from Issaquah and there was some pretty good snow between here and there.  I-90 already snow on it around Preston and the 18 junction.

[Ice_is_Everywhere]

6 minutes ago, JSnowlin said:

 

Yup! Very frustrating.

[SnowySeeker50]

Haven't seen anything at home since early afternoon. Finally lightly snowing now.

[jcmcgaffey]

9 minutes ago, Meatyorologist said:

HRRR has precip picking up in the central Sound again late this evening into early tomorrow morning. Not sure what it sees, but given the nebulous nature of this Arctic frontal boundary's precip shield, I would not discount such a development.

That cold air going out over the ocean acts like a lake effect and then gets wringed out in the convergences. I don’t know if models take that into affect but in the past they tend to underestimate it. 

[snow_wizard]

2 minutes ago, MR.SNOWMIZER said:

Going to be close. Even with that track it will be colder than shown.

I agree.  The center is a tad south of here in the afternoon.  It does show a nice amount of backwash snow even if the main event doesn't work out.

[Kayla]

Its already dropped down to -6F here at my house this evening. This before the real Arctic air moves in here on Wednesday which is crazy when you think about it!

Windchill Warning and Winter Storm Watch have been issued for windchill values as low as -60F/C and 4-8" of snowfall on Wednesday. Going to be a heck of a brutal 48 hour stretch!

[Blizzard777]

Timelapse of the CZ tail forming over south sound 

[awright-31]

Down to 34. 

[TT-SEA]

5 minutes ago, snow_wizard said:

Yup.  Finally getting some and the radar looks good.  ECMWF shifted a tad south for tonight so we may pick up a couple of inches.

And its just not a c-zone parked along I-90 and that opens it up for everyone... precip is widespread.

[SnowWillarrive]

3 minutes ago, snow_wizard said:

I just got back from Issaquah and there was some pretty good snow between here and there.  I-90 already snow on it around Preston and the 18 junction.

Heavy snow here now!!

[TacomaWx]

Lol of course im At Anthony’s in gig harbor and it’s about to snow at home

[Kolk1604]

Sigh 18z EPS/Control are worse...

Really going to need to hope these temps are way too high 

[jcmcgaffey]

I’ll say it is hard to be just on the south edge of the convergence for so long as well as too far north the southern stuff similar to a few weeks ago but the central sound should start filling in a little more. 

[Rubus Leucodermis]

7 minutes ago, MR.SNOWMIZER said:

15 at Lynden! Extremely cold outflow event. 

Hoping to score some lows in the single digits out of it. Now that I have snow cover, all it should take is a clear, still night.

[Perturbed Member]

1 minute ago, Kayla said:

Its already dropped down to -6F here at my house this evening. This before the real Arctic air moves in here on Wednesday which is crazy when you think about it!

Windchill Warning and Winter Storm Watch have been issued for windchill values as low as -60F/C and 4-8" of snowfall on Wednesday. Going to be a heck of a brutal 48 hour stretch!

Fascinating. Your climate is pretty much on another planet. I'm glad you still post here, helps to put some perspective and context around our "events" here .

[Front Ranger]

3 minutes ago, Kayla said:

Its already dropped down to -6F here at my house this evening. This before the real Arctic air moves in here on Wednesday which is crazy when you think about it!

Windchill Warning and Winter Storm Watch have been issued for windchill values as low as -60F/C and 4-8" of snowfall on Wednesday. Going to be a heck of a brutal 48 hour stretch!

What's the coldest temp you've seen there to date?

[smerfylicious]

Nice consistently moderate snow in this band that stretches from Lynnwood over past my area.