Jump to content
  • Member Statistics

    17,732
    Total Members
    7,904
    Most Online
    Upstatesnowbird
    Newest Member
    Upstatesnowbird
    Joined

Mid to long range discussion- 2025


wncsnow
 Share

Recommended Posts

11 minutes ago, GaWx said:

0Z Icon is significantly colder run vs runs from 12/24 hours ago. Coldest of season by far 1/20-1 and bone dry/no nearby surface low. Has lows on 1/21 of 10/9 at ATL/RDU! The plumbers would be busy!

Minn/SPaul highs below 0F 1/19-20! Chicago barely gets above 0F on 1/20! Most of TN highs on 1/20 only in teens!

Does the ICON have ensembles? Would be interested on those. 

Link to comment
Share on other sites

5 hours ago, fig said:

Right where I want it this time next week, personally! :snowing:

Me, too!  But, I’m not looking at any deterministic runs until we’re inside 186 hours and even then, we need to be within 96 hours to really trust the signal.  Still a long ways to go.  That said, it’s better to see something at 200 hours than nothing at all.  Just trying to keep things in their proper perspective. 

  • Like 1
  • 100% 1
Link to comment
Share on other sites

2 minutes ago, ncforecaster89 said:

Quick off-topic question: Is WeatherBell that much better than Weather Models?  I just purchased access to the latter this evening based on a few others preference for it.  I really like the looks of these WxBell graphics you’re posting.  

I’m not really familiar with WxModels to be able to compare them.

  • Thanks 1
Link to comment
Share on other sites

GFS runs with significant SE coastal wintry precip within 1/21-2:

Jan 11 6Z and 12Z

Jan 12 6Z and 18Z

Jan 13 0Z, 6Z, 12Z, 18Z

Jan 14 0Z

So, 9 of last 12 and 6 in a row!

Normally when the models tease this area the NW trend takes the wintry precip away as it gets closer. That has yet to happen at all in this case. The coastal wintry GFS runs for 1/21-2 started at just over 10 days out. We’re now down to 7.5 days out and there’s no NW trend yet. The prior threat trended NW enough to end the coastal threat by 6 days out. If this doesn’t trend NW by during the Wednesday runs, this would be looking like a totally different situation. It already looks suspiciously different and I wonder if it is due to the Siberian high/extreme cold making this a different situation. 12/1989 and 1/2018 also had extreme cold to the north feeding those coastal storms.


 Edit: 2 of the last 6 Euro 0Z/12Z runs have had it then, both on 1/12: 0Z and the insane 12Z. The two on 1/13 were dry. The 0Z 1/14, just out, is also dry. No CMC runs through 0Z 1/14 have had it yet. So, since 1/13, GFS has been on an island.

@Awesomesauce81

@gtg947h

  • Like 2
Link to comment
Share on other sites

9 minutes ago, dsaur said:

Why do these half county sized patches of heavier precip appear on these models?  Is it just a black cat in the matrix, or is there some alogarithmic reason for them?

Tony, It’s because those half county areas are on the border between one category and the adjacent one. They’re barely in the higher category. For example, that one county N of Columbus with the higher category is likely only barely above 1” vs their neighbors barely under 1”.

  • Like 1
Link to comment
Share on other sites

1) EPS

0Z 1/3/24 EPS (7 days before 1/10 storm): amounts were dropping then:

image.thumb.png.a27f517780c7a69ab3f73c013424b2e0.png
 

Compare that to 0Z 1/14/24 EPS (7 days before potential 1/21/24 threat): much higher most of GA, SC, NC especially E NC to FL panhandle and with substantial increase since 12Z:

IMG_1820.thumb.png.a0a52b1aafbfb897f4a774c00d1b8410.png
 

2) GEFS

0Z 1/3/24 GEFS (7 days before 1/10 storm): amounts were dropping then:

image.thumb.png.c6304339971b1acaed396d7af57ccb53.png

 

Compare that to 0Z 1/14/24 GEFS (7 days before potential 1/21/24 threat): much higher ALL of GA, SC, NC, and FL panhandle and with substantial increase since 12Z:

IMG_1808.thumb.png.914ef86337c0eb6001b9551dc8fa0de3.png

  • Like 1
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

×
×
  • Create New...