Jump to content
  • Member Statistics

    17,604
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

December 16-17, 2020 Winter Storm Obs/Nowcasting


WxUSAF
 Share

Recommended Posts

2 minutes ago, high risk said:

          It's the "new" GFS, but it has the old physics, so I suspect that its inability to capture mid-level warm layers remains.

I’m not doubting it but I thought they changed the core when they upgraded to the FV3 version.  Being non hydrostatic v the old GFS you would think the physics have to be different. Yet it has some of the same weaknesses from what I’ve see so far. Makes me wonder if there is something in the methodology or data assimilation of NCEP behind it. 

Link to comment
Share on other sites

6 minutes ago, losetoa6 said:

Thanks. I'm not really on social media other than here lol. 

Mby forecast is for 8"-14" total storm . I feel 75% confident 

I'm gonna go more conservative and reduce my totals from yesterday. I'll say 6-10 with 12 being max potential. Unfortunately I think the mix period last longer and hurts chances for 12+. 

  • Sad 2
Link to comment
Share on other sites

Just now, HighStakes said:

I'm gonna go more conservative and reduce my totals from yesterday. I'll say 6-10 with 12 being max potential. Unfortunately I think the mix period last longer and hurts chances for 12+. 

Thinking the same for me here. 6-10 instead it 10-16 like I was thinking 

  • Like 1
Link to comment
Share on other sites

31 minutes ago, EastCoast NPZ said:

I'm out 522N of winchester.  A bit NW of lake holiday. 

 

29 minutes ago, clskinsfan said:

He moved from a snow hole to a beatdown zone. :)

Really glad to hear, and I hope all you westerners and northerners end up with double digit totals.

  • Like 2
Link to comment
Share on other sites

5 minutes ago, psuhoffman said:

I’m not doubting it but I thought they changed the core when they upgraded to the FV3 version.  Being non hydrostatic v the old GFS you would think the physics have to be different. Yet it has some of the same weaknesses from what I’ve see so far. Makes me wonder if there is something in the methodology or data assimilation of NCEP behind it. 

       As you noted, the core was changed, but most of the actual physics (except for the microphysics) were retained.    I think that the PBL scheme plays a role in these warm layer cases.

Link to comment
Share on other sites

3 minutes ago, Chris78 said:

What are you thinking out our way?  Didn't think we would be fighting the mix line but it looks as if we may be.

I've thought all along this could be an 8-12" storm for us.  12-18" seems high in spite of the models consistently printing out those big totals.  Nearly everything would have to go right to get there IMO. 

I expect to see sleet for a while with the heaviest precip tomorrow evening, but hopefully not for a long duration.

  • Like 1
Link to comment
Share on other sites

2 minutes ago, psuhoffman said:

No but in January with a colder airmass and less scolding water temps the low likely doesn’t track as far west. 

Won't debate that. Just saying there is more wrong with this storm now than the airmass. There is cold air around to tap. It isn't like it's 32 degrees in New England and Upstate NY right now.  The track is just putrid for the I-95 corridor.

  • Like 2
Link to comment
Share on other sites

8 minutes ago, high risk said:

       As you noted, the core was changed, but most of the actual physics (except for the microphysics) were retained.    I think that the PBL scheme plays a role in these warm layer cases.

Ah new peramiterization same flawed math. I kid of course. If not for the euro the gfs would be the gold standard.   

  • Like 1
Link to comment
Share on other sites

5 minutes ago, ErinInTheSky said:

Yeah.

I mean, there are ensemble members that shut us all out, and there are ensemble members that look like the GFS 3 days ago.

It’s a tough call, gonna come down to a few miles. I don’t envy the tv meteorologists seems like pitchforks either way. I think we really need to cash in on a front end thump and hope for any backend snow as icing.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...