Jump to content
  • Member Statistics

    17,584
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Feb 8th-9th Do We Finally Get A Coastal?


dryslot

Recommended Posts

  • Replies 1.5k
  • Created
  • Last Reply

A big snow is not likely, but snow on Friday is not as far fetched as some are making out. I think a shot for some snow is likely, but the intensity is obviously up in the air.

I agree Scott. This could be a case where a "benign" looking pattern over achieves somewhat. Small scale features (trough) and other thermal, moisture and wind elements come together in just the right amts both time and place to yield an accumulating snow fall of light to moderate intensity

Link to comment
Share on other sites

i know most here probably know this:

0z NAM not a "coastal" thru 84h... just a much stronger northern stream shortwave, and very different synoptic evolution compared to Euro... in contrast to Euro, not much interaction with southern stream, at least thru 84h... 

 

end result a more potent shortwave "compensates" for lack of any phase, so we get something in sensible weather, but it's not the coastal Euro was showing

 

(edit: an echo of Rollo's post)

 

(edit: the differences in NAM compared to previous NAM runs are obvious in first 36 hrs in handling of vorticity off northern Pacific coast... spits out more potent energy into northern stream... don't know how this unfolds, but regardless it's not really a step towards the Euro evolution)

Link to comment
Share on other sites

i know most here probably know this:

0z NAM not a "coastal" thru 84h... just a much stronger northern stream shortwave, and very different synoptic evolution compared to Euro... in contrast to Euro, not much interaction with southern stream, at least thru 84h... 

 

end result a more potent shortwave "compensates" for lack of any phase, so we get something in sensible weather, but it's not the coastal Euro was showing

That was already mentioned earlier that northern stream s/w was more potent and that we would still see sow from this phase or not

Link to comment
Share on other sites

i know most here probably know this:

0z NAM not a "coastal" thru 84h... just a much stronger northern stream shortwave, and very different synoptic evolution compared to Euro... in contrast to Euro, not much interaction with southern stream, at least thru 84h... 

 

end result a more potent shortwave "compensates" for lack of any phase, so we get something in sensible weather, but it's not the coastal Euro was showing

 

(edit: an echo of Rollo's post)

 

 

This isn't entirely true - there really is only one difference between this run and these Euro's, and it's in the southern stream.  The Euro is insisting on enough southern stream impulse to induce a coastal along the Carolinas, that is then captured by the N stream ...phasing/bombing upon exit, but fast enough to clip the area.  If even a slightly more robust southern stream impulse is introduced to this NAM solution, given the other paramters in play it would be almost identical to the Euro. It's just missing the southern stream intensity - or the Euro is over-zealous.  One or the other.   

Link to comment
Share on other sites

This isn't entirely true - there really is only one difference between this run and these Euro's, and it's in the southern stream.  The Euro is insisting on enough southern stream impulse to induce a coastal along the Carolinas, that is then captured by the N stream ...phasing/bombing upon exit, but fast enough to clip the area.  If even a slightly more robust southern stream impulse is introduced to this NAM solution, given the other paramters in play it would be almost identical to the Euro. It's just missing the southern stream intensity - or the Euro is over-zealous.  One or the other.   

IMO we need more digging and even more robust N'rn stream to phase with the the south one.

EC appears to be doing the opposite forcing S'rn stream into a phase with the N'rn stream

Link to comment
Share on other sites

This isn't entirely true - there really is only one difference between this run and these Euro's, and it's in the southern stream.  The Euro is insisting on enough southern stream impulse to induce a coastal along the Carolinas, that is then captured by the N stream ...phasing/bombing upon exit, but fast enough to clip the area.  If even a slightly more robust southern stream impulse is introduced to this NAM solution, given the other paramters in play it would be almost identical to the Euro. It's just missing the southern stream intensity - or the Euro is over-zealous.  One or the other.   

 

Agree... was about to post that it would be nice to inject Euro type southern stream energy into this 0Z NAM run, and we have a different beast entirely, phase, coastal, etc... 

 

Right now Euro seems to be alone with intensity of southern stream energy... I remain skeptical (now watch 0z GFS spit out a technical bomb)

Link to comment
Share on other sites

Yeah the NAM is definitely able to tap into a better moisture source from the south on this run, regardless of how weak the southern stream impulse is...I know its the 72+ hr NAM, but I take this as a very positive run to see it support some semblance of a higher precip event like the euro shows. I'm going to be in hunter for this one so I'm really pulling for it. Not too much hope for the coastal plain on this one at the moment.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...