Jump to content
  • Member Statistics

    18,685
    Total Members
    14,841
    Most Online
    LordOfMud
    Newest Member
    LordOfMud
    Joined

Is we back? February discussion thread


mahk_webstah
 Share

Recommended Posts

28 minutes ago, Henry's Weather said:

How long does it take to affect the troposphere?

If it’s top-down (they usually are but not always), a February disruption usually takes about 3-4 weeks to affect the troposphere.
 

If it’s bottom-up, then the troposphere is actually affected first. 

  • Thanks 1
Link to comment
Share on other sites

24 minutes ago, ORH_wxman said:

If it’s top-down (they usually are but not always), a February disruption usually takes about 3-4 weeks to affect the troposphere.
 

If it’s bottom-up, then the troposphere is actually affected first. 

Yeah it's a matter of when in either case.

The trouble with February downward breaks is that by the time it matters, the sun/seasonality is attempting to make it matter less.  I guess cross that bridge... 

In this case, the exertion of a -AO has been in place prior to any notable temperature intrusion, so this suggests it is bottom up.  This also hearkens back to an argument I've made in the past, that if you are in a season plagued by a preponderance of the -AO state, the advent of a SSW means less because it's eventual modulation is absorbed into the preexisting state.   But that's a deeper aspect.   

image.png.e930bbe441fe3b380369bb447d388a44.png.... it's going to be difficult separating causalities if the AO continues to be so weighted.   

So I believe the AO is separate phenomenon endemic to this season ... record breaking domain temperatures associated with this up there.  It's offloaded so much mass that it is actually driving the NH totals down, while leaving the arctic elevated.  Mind you, an elevated state that can still store meat indefinitely ... but it's an upside down hemisphere prior to any SSW even being involved.    

image.png.3fc30bcf3903baf5a7a8f917edf3e5b5.png  

 

So I've looked at it and to me, there's more suggestion that this is bottom-->up   

 

  • Like 1
Link to comment
Share on other sites

24 minutes ago, Damage In Tolland said:

You’ll get several inches at least Saturday 

 

On 1/27/2026 at 5:55 PM, Damage In Tolland said:

Heaviest will be East of River but west will get plenty 

Hopefully this 7-day forecast will work out better than your 5-day prediction for this latest miss.

  • Haha 1
Link to comment
Share on other sites

1 hour ago, ORH_wxman said:

If it’s top-down (they usually are but not always), a February disruption usually takes about 3-4 weeks to affect the troposphere.
 

If it’s bottom-up, then the troposphere is actually affected first. 

I don't think the lag will apply since we have antecedent blocking in this case. It's just going to protract it.

  • 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...