• Member Statistics

    16,116
    Total Members
    7,904
    Most Online
    Irish
    Newest Member
    Irish
    Joined
wxeyeNH

NNE Cold Season Thread 2020-2021

Recommended Posts

1 hour ago, bwt3650 said:

Such a great educational post for someone like me trying to learn about these up-slope events.  I was literally just reading a paper about the blocked vs. unblocked events and froude numbers (all new to me).  So it looks like for the Jay/Mansfield area, we want an unblocked flow which leads to greater precip on the the eastern side?  What Froude number is best; anything over 1?  

Maybe this is what you were reading, not sure, but BTV has a nice succinct write up about it. Even non METS can sort of understand. :)

https://www.weather.gov/btv/froude

 

Share this post


Link to post
Share on other sites
4 minutes ago, J.Spin said:

I had just come in from yard cleanup because the rain was too heavy, and I got a WWA alert from the BTV NWS, so presumably they feel we’ll hit that criteria.

They've updated the alerts map, so here's the current WWA distribution:

01NOV20A.jpg

Share this post


Link to post
Share on other sites
2 minutes ago, J.Spin said:

Thanks for the updates – it looks like snow levels are still pretty high, with snow falling at the Bolton Valley Vista Peak Live Cam at ~3,150’, but no flakes visible on the Bolton Valley Main Base Live Cam at ~2,150’.

Wet flakes are making it down to top of Mtn Triple at like 2600-2700ft.  Accumulations are 2800-2900ft and up.  I just walked it the rain line ha.  Not as much fun.

Dont know if this works, but a vid of it on Instagram: 

https://www.instagram.com/p/CHD4_t1B9-A/?igshid=elxopp9x865g

Share this post


Link to post
Share on other sites

Here’s the projected accumulations map the BTV NWS has up in association with the incoming weather.  They’ve got us in the 6-8” shading down here, with 8-12” shading for the elevations.  That seems pretty consistent with the point forecast here, although the WWA highlights accumulations above elevations of 1,000’.

 

01NOV20B.jpg

Share this post


Link to post
Share on other sites
5 minutes ago, powderfreak said:

Wet flakes are making it down to top of Mtn Triple at like 2600-2700ft.  Accumulations are 2800-2900ft and up.  I just walked it the rain line ha.  Not as much fun.

Dont know if this works, but a vid of it on Instagram: 

https://www.instagram.com/p/CHD4_t1B9-A/?igshid=elxopp9x865g

That worked great – I was able to click on it and view it easily.  Nice to see!

  • Like 1

Share this post


Link to post
Share on other sites

Could not have asked for a better day in the alpine yesterday; I summited Mount Adams around 10:30am and could see clear to the Atlantic Ocean! I've been up there a bunch, but I have never seen such unlimited visibility before. It was 16 degrees with a wind averaging in the 15-20 mph, so I didn't snap too many pics as my hands got cold fast.

Definitely looks like an interesting couple of days up here. Again, I don't expect much (if anything) from the upslope event here in Jackson though I am interested in seeing how the Froude number applies here in the Whites. It continues to look like there is pretty good Windex potential tomorrow night as that second impulse swings through, so if we're finally going to whiten the ground in my location this is probably our best shot.

Pic below is from the summit of Mount Adams looking toward Mount Madison yesterday morning.

madison.jpg

  • Like 4

Share this post


Link to post
Share on other sites
38 minutes ago, jculligan said:

Could not have asked for a better day in the alpine yesterday; I summited Mount Adams around 10:30am and could see clear to the Atlantic Ocean! I've been up there a bunch, but I have never seen such unlimited visibility before. It was 16 degrees with a wind averaging in the 15-20 mph, so I didn't snap too many pics as my hands got cold fast.

Definitely looks like an interesting couple of days up here. Again, I don't expect much (if anything) from the upslope event here in Jackson though I am interested in seeing how the Froude number applies here in the Whites. It continues to look like there is pretty good Windex potential tomorrow night as that second impulse swings through, so if we're finally going to whiten the ground in my location this is probably our best shot.

Pic below is from the summit of Mount Adams looking toward Mount Madison yesterday morning.

madison.jpg

I thought I saw you up there when I was on my deck. LOL

  • Haha 2

Share this post


Link to post
Share on other sites

Tomorrow morning does have a nice little period.  The 18z ECMWF from 6-10am shows temps of 32-29F in the valley with a steady light snow.

A9A94ABC-3693-4E2D-8625-457051D30FF2.thumb.png.ca41920fb5931965e5563ff4a344bb65.png

Total water after the clipper-like system tomorrow night is decent for a global model.  I do think it’s good when the global models show these type of progs... they know there’s terrain there and can often underestimate it.  Usually this is a very good look for a global model.

Jackpot right over Mansfield, Bolton and J.Spins house, lol.

C83538F1-7F65-4712-91B2-F8311120B648.thumb.png.800663a2881c4e27734fda9ddd58d391.png

  • Like 1

Share this post


Link to post
Share on other sites
15 minutes ago, PhineasC said:

38 degrees with some drizzle/mist. Nasty out there. 

Yeah it is.  Heavier precip is over the crest and it’s 37F at 1400ft.  38-41F down in the lower elevations.

ADEACFBF-0F6C-40ED-8907-D6F1037E188D.jpeg.e385faee02da22209c8c970526216bd4.jpeg

F57E65C8-AC0D-4D44-9B4F-0CC46B742FFD.gif.aa4e98fee4d6eb42393d377a82364c41.gif

Share this post


Link to post
Share on other sites

Tough to tell for sure on my cam, but it looks like a spotty, slushy coating on the sidewalk leading to my front door.  Disappointing to miss the first significant event up there by a week, but I'm glad to see the snow season officially kick off.

Share this post


Link to post
Share on other sites

It is snowing nicely.  MVL ASOS dropped under 1 mile vis for the first time of the season in snow.

Radar looks great.  The office at the ski area is going to get destroyed, lol.

Share this post


Link to post
Share on other sites

Grass almost gone at home, blowing and drifting too.  This is some surprisingly dry snow it seems.  Be curious to get JSpin’s water analysis later today when the first round shuts off.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...