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February storm threat discussion


Ellinwood

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GFS ensembles dig the Sunday snow chances. Most give us some snow like the Op. A few are suppressed to the south and only one shows rain with a cutter track. The ensemble mean (and nearly all the members) also disagree with the Op's complete abandoning of the cold pattern development.

Just took a quick look at those and was about to post on the same thing. At a glance, it would seem that most are really in line with the op at 114. That's the only one I had time to take a look at.

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GFS ensembles dig the Sunday snow chances. Most give us some snow like the Op. A few are suppressed to the south and only one shows rain with a cutter track. The ensemble mean (and nearly all the members) also disagree with the Op's complete abandoning of the cold pattern development.

I think 2 or 3 of them develop a coastal down near NC that moves north or northeast and brings us even more snow :lol:

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Not that this was ever in doubt, but since only 1 out of 16 GFS ensemble members has a cutter on Sunday, the Euro cuts that bad boy to Minneapolis.

Interesting... the 850 maps show us below 0C through 120 at least... then 144 shoots us up to +4 and everyone in the east torches... :lol:

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GFS ensembles dig the Sunday snow chances. Most give us some snow like the Op. A few are suppressed to the south and only one shows rain with a cutter track. The ensemble mean (and nearly all the members) also disagree with the Op's complete abandoning of the cold pattern development.

the ensembles are just as bad. Remember last week, they all had a coastal storm 3 days before the event for this past sunday? Every member had one

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This is what I was referring to earlier. It would seem that HPC feels pretty good about a solution near that of the 12z GFS (and did even before it came out), and not one near the EC.

This is the latest update.

MADE A NUMBER OF COSMETIC CHANGES TO THE UPDATE PACKAGE FOR THE

FINAL ISSUANCE...MAINLY TO DEFINE FRONTAL PLACEMENT BETTER...BUT

DID NOT ALTER THE FUNDAMENTAL FLOW. THE BEST NEWS FROM THE 12Z/31

CYCLE IS THAT THE DETERMINISTIC GFS IS QUITE CLOSE TO THE MANUAL

BLEND...ADDING TREMENDOUSLY TO THE USEFULNESS OF ITS MASS

FIELDS...MOS...ETC. THE GEM GLOBAL AND UKMET ARE NOT CONVERGING

TOWARD A CONSENSUS...SO DID NOT INCORPORATE ANY OF THEIR

IDIOSYNCRASIES.

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If this does come out close to a solution like the 12z GFS from today's runs, props to the excellent work of the HPC mets who were pointing to that solution days ago, even in the midst of model chaos.

I'll second that one. And they are holding firm even in the face of the mighty Euro.

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LWX 1/31 afternoon disco for this wknd

FORECAST UNCERTAINTY INCREASES SIGNIFICANTLY FOR THE WEEKEND AND

ERY NEXT WEEK AS MODELS DEVELOP A REX BLOCKING PATTERN OVER THE

GREAT PLAINS. THERE IS CONTINUED HIGH ENSEMBLE SPREAD WITH THE

DEVELOPMENT AND DECAY OF THE CUTOFF LOW OVER THE CENTRAL CONUS. THE

12Z OPERATIONAL GFS AND ABOUT HALF ITS ENSEMBLE MEMBERS ARE

PROGRESSIVE...BRINGING THE UPPER LOW OVER THE AREA SUN AND MON. IN

THESE RUNS...BROAD SLY FLOW OUT OF THE LOW LEADS TO OVERRUNNING

PRECIP SAT NGT INTO SUN. WITH HIPRES TO OUR NORTH...A CAD SETUP

WOULD PROVIDE A CONCERN FOR A WINTRY MIX DURING THIS TIME. OTHER

RUNS SUCH AS THE 12Z ECMWF AND CANADIAN ARE MUCH SLOWER WITH

EJECTION OF THE UPSTREAM LOW AND STRONGER WITH CANADIAN

HIPRES...AND KEEP THE AREA DRY UNTIL SUN NGT-MON. HAVE LEANED

TOWARD A SLOWER/DRIER SOLUTION...WHICH WOULD KEEP THE CLOSED LOW FROM

REACHING THE MID- ATLANTIC REGION UNTIL ERY NEXT WEEK. POPS IN THE

FORECAST ARE LOW DUE TO HIGH UNCERTAINTY OF THE FORECAST.

-- End Changed Discussion --

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FWIW, which isn't much.. but Day 10 EURO looks mighty nice... too bad it will likely be gone by the next run

Forecasting beyond 3-5 days is a wildcard unless there is a strong consensus/signal for a certain pattern.....I think there are a lot of mixed signals now and so a lot of guesswork....Those who have a lot invested in a stable money pattern setting up and/or winter being over once it breaks down, are probably going to be disappointed...I think the overall narrative regarding February has been a bit off track, especially for us down here....I think uncertainty is the best guess

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So what else are they supposed to do? Disregard ? they know deep down what the chances are. it's called hope.

Not freaking out would go a long way. Buying into one run totally then acting like a baby when it is gone on the next is a too common occurance

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