January 2019 Weather in the Pacific Northwest

[Frontal Snowsquall]

Good EURO run. Onto the 6z runs during night shift and the 12z runs tomorrow morning. Think Cold and Heavy Snow. ❄❄

[MossMan]

Way too early to say this, of course, but it's looking like 6+ days of sub-40 temps might be possible with this for a good number of places.

 

At OLM, Feb 2018 saw 6 straight sub-40 days. Feb 2014 also saw 6. Feb 2011, also 6.

 

That makes it seem pretty common, but it actually isn't. Before that, the last Februaries to see 6 consecutive sub 40 days at OLM was 1990 (7), and then 1989 (6). But before that, you have to go all the way back to 1949 to find a February that managed 6 sub-40 days in a row.

 

So yeah, February cold spells have actually been pretty darn impressive recently. And that looks like it could continue coming up.

Last February I had snow on the ground from the 17th thru 28th...not too shabby at all!

[TigerWoodsLibido]

[Cloud]

Someone wanna jump out into the pacific and stop this thing from shifting more west?

[Frontal Snowsquall]

I think it's a good sign when you change "Think cold and snow" to "Think cold and heavy snow".

The "Heavy Snow" moniker brings back lots of snowy memories.

[GHweatherChris]

Does not look good for IMBY, bust......

[Jesse]

00z EPS continues to look pretty nice for a mean at day 10.

 

Look at that East Coast ridge, not only holding everything in place but saying 'It's not your turn anymore' as well.     

 

 

That's nice to see. Days 3-6 are probably more interesting than day 10 to me, though. Hoping the EPS isn't following the op with that offshore/cutting off to the south trend with the initial shot.

[Frontal Snowsquall]

00z EPS continues to look pretty nice for a mean at day 10.

 

Look at that East Coast ridge, not only holding everything in place but saying 'It's not your turn anymore' as well.

 

Always great to see that horseshoe ridging pattern keeping the cold air in place. Like what others have said, we are in store for an extended cold spell to start February.

[HighlandExperience]

Always great to see that horseshoe ridging pattern keeping the cold air in place. Like what others have said, we are in store for an extended cold spell to start February.

We need that to hold til March 15th

[Gradient Keeper]

Nice EPS run Day 4-10!

[Perturbed Member]

So close now to the NAM range. Once you can use the mesoscale models you knew it is legit. 

[Deweydog]

It’s January 31st.

[GHweatherChris]

Widespread snow looks unlikely now, next...

[Gradient Keeper]

6z NAM

 

Day 1.5 this is different. Ridge merger occurring now, sooner than previous runs.

 

[Gradient Keeper]

Nearing Day 2 evolving block several notches stronger than 00z

 

[Gradient Keeper]

Columbia Basin cold pool update
It sure doesn't want to go away anytime soon. Not surprised. It is deepening and expanding yet again. East winds at my location near West Gresham have actually increased a bit and are gusty yet again.

 

[MossMan]

Widespread snow looks unlikely now, next...

2020-21. Until then...forks for you!

[Gradient Keeper]

Pretty sure it isn't supposed to be gusting back over 70mph at Vista House again. Total model failure handling the persistent cold pool.

 

[wxmet]

EPS 00z looks closer to the the GFS and UKMET 00z runs with the trough on Sunday than it's OP run. 

[Perturbed Member]

06z ICON is underway...

[Perturbed Member]

Columbia Basin cold pool update

It sure doesn't want to go away anytime soon. Not surprised. It is deepening and expanding yet again. East winds at my location near West Gresham have actually increased a bit and are gusty yet again.

 

 

 

I doubt that cold pool is going away anytime soon. Too bad we won't be able to tap into any of the cool air there with the upcoming event given the onshore gradient.

[Gradient Keeper]

We can now watch things developing in real time. IR/WV Imagery shows the initial arctic font looming to our north. I love it when we can watch things develop in front of our eyes rather than needing to rely on models.

 

 

6z GFS in 30 minutes

[Perturbed Member]

Snow levels looking pretty darn low by 10 AM Sunday on the 06z NAM. Things look ahead of the 00z GFS.

 

[Frontal Snowsquall]

Snow levels looking pretty darn low by 10 AM Sunday on the 06z NAM. Things look ahead of the 00z GFS.

 

Looks like all snow Longview north. This bodes well for us Sunday night down here.

[Gradient Keeper]

06z ICON did not move the low further west than 00z. More NNE.

 

At least not by 4AM Monday.

ICON looks nice and colder.

[Gradient Keeper]

I like the look of this.

Yeah. The initial low develops right near/just off Central Vancouver Island. Ideal trajectory.

[Frontal Snowsquall]

For PDX, the 6z ICON shows rain changing over to snow by Monday 4am then pretty much snows all day Monday through the evening. Snowfall amounts look good.

 

[Gradient Keeper]

For PDX, the 6z ICON shows rain changing over to snow by Monday 4am then pretty much snows all day Monday through the evening. Snowfall amounts look good.

 

PDX thickness 515. Colder run.

[Gradient Keeper]

6z GFS Day 1

 

[Jbolin]

ICON looks nice and colder.

But, is it going to snow?

[Gradient Keeper]

Day 1.5

 

[Gradient Keeper]

Day 2 evolving block amplitude a notch stronger

 

[Gradient Keeper]

[Gradient Keeper]

Day 3

 

[Gradient Keeper]

Arctic trough progressing southward a notch further east.

[Gradient Keeper]

[Jbolin]

I have to say I'm not overly impressed with precip amounts for Sunday

T - 1" ?

[Gradient Keeper]

Day 4

 

[Gradient Keeper]

Day 4.5 not as cold as it looks like a few weak lows move up from the south pulling up warmer air at times.

 

[Gradient Keeper]

Not concerned unless that becomes a trend. I doubt it.