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LakePaste25

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About LakePaste25

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  • Four Letter Airport Code For Weather Obs (Such as KDCA)
    KERI
  • Location:
    Waterford, PA

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  1. LakePaste25
    Latest Euro seasonal gets the enhanced coastal precipitation going as early as September.
  2. LakePaste25
    We can probably assume that the W pac warm pool will finally slosh east if those model output verify. You don’t get a +4C ONI Nino without it doing so.
  3. LakePaste25
    I agree, but verbatim the model run posted is not a classic +PNA/-EPO look that we tend to see in weaker Ninos. There may be periods of it, however which could be factored in the ensemble mean. I just wouldn’t take those blues in the South as “winter-like cold that supports snowfall most of the month.”
  4. LakePaste25
    Modelology vs meteorology. Where exactly is the cold air coming from if it’s all above normal north of Tennessee? It has to travel from somewhere on the way down right? Cold air can’t come from the pacific at California’s latitude. Which would mean at minimum, near or slightly below normal temps north of TN as it travels down? Yeah. i don’t buy wall to wall torch up here either. Maybe it’s 80/20, 70/30 or whatever. But the main reason that it’s blue in the South while dark red over the Great lakes is due to the uniformity of the airmass. 40s is well above normal for the Grest Lakes, but below normal for Louisiana.
  5. LakePaste25
    Those blues in the South do not necessarily equate to winter-like cold that would be supportive of snow outside of the appalachians. The blues are also there because it’s very stormy with the strong extended pacific jet feeding into the active southern stream.
  6. LakePaste25
    The issue I do have with 97-98 is a lot of these wintery stretches were so marginal with 30-35 degree days. Factor in 2-3 decades of warming and you get the idea.
  7. LakePaste25
    Yeah I don’t expect a wall to wall pac jet extension the entire season, otherwise LAX might end up underwater. Looking at 97-98 here, there were a couple of 5-7 day wintery stretches in december, january maybe 1 week tops, and a couple more stretches in Feb and a couple more in March. Jan was the least snowiest at 9.5” while December had close to 30”. Feb/March 15-20” each. Below normal season but obviously not 0 or even top 10 lowest.
  8. LakePaste25
  9. LakePaste25
    The EPS in particular seems to have a westward lean on the OLR map, which would push the RMM mean into the COD. I see less of a signal of this on the GEFS.
  10. LakePaste25
    I think this is manifesting as a weakened mid latitude cell via destructive interference. The westward leaning convection results in downstream mid latitude trough, which then results in subsidence downstream of the trough. Where the subsidence is occurring, it competes with where we expect a mid latitude trough from Nino influenced convection over the equator. So the end result is generally a weakened aleutian low as it must compete from subsidence caused by upstream troughing. The long range GEFS starts to bring these troughs closer together, more of what we’d expect in a Nino with a broad mid latitude cell extending east of the dateline.
  11. LakePaste25
    I remember HM mentioning awhile ago that the 97-98 season came extremely close to a KU for the NE/Mid atlantic. I keep stressing that a 97-98 redux does not automatically mean “guaranteed low snow season” even for DC/PHL/NY.
  12. LakePaste25
    My opinion is the east based nature of 97-98 did not prevent a big snowstorm from occurring. 82-83 was east based and produced a big snowstorm in the northeast and mid atlantic, and 72-73 produced a big snowstorm in the south. So whether it is east based or basin wide such as 15-16, there is still usually an opportunity or two.
  13. LakePaste25
    Does the difference matter at that temp? 97-98 could’ve easily produced a blizzard just like 15-16. Maybe just less cold shots.
  14. LakePaste25
    this gave me a good laugh:
  15. LakePaste25
    It’s still notable that it could end up the warmest SST’s on record in that region. Maybe “strongest” is not the right word in terms of sensible atmospheric forcing.
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