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December 26th - 27th Winter Storm


Powerball

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To me, the 00Z GFS looks pretty similar to its 12Z run, except it trended a little in its surface low and the way its wrapping up toward the 12Z EC. Its surface low positions are now almost identical to the EC through the day Wednesday, although not as deep. The GFS was not being aggressive enough in wrapping moisture and cold air around the center as it moved into the southern Apps, and has trended toward the EC in this regard, though still not as much. It is important to recognize there are still substantial differences between the GFS and all the other models with the strength of the lead wave that moves through Monday, with the other models slower and more amplified. The GFS has trended toward that slower/deeper solution every run. It is likely that at least part of the reason the EC is stronger with the Christmas/Wed system is that it has an overall more amplified pattern and stronger baroclinicity in place because of the stronger lead system. If the 00Z EC holds serve with intensity and track, one would guess the GFS will continue to trend toward it - but given that this is a complex pattern that is certainly not a given. Will also obviously be interesting to see what the UK and GGEM do.

Great analysis. Thanks. :)

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I bet we don't see any significant shifts in the models tonight. In fact I would bet now the ggem and uk keep the suppressed look and the euro is not all that different from 12z. Sunday comes into the 72 hour window and that's when we'll start getting a much better picture.

10 bucks says the GGEM bombs it out for the I-95 crew

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0z Ukie stays way south and then up the coast.

Yep, 00Z UK is still farther SE than GFS. Takes deepening surface low from near Slidell, LA at 00Z Christmas evening to just offshore the Tidewater at 00Z Wed evening, then a few hundred miles E of Cape Cod 00Z Thu evening.

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You do realize that in many (most?) months the UKMET has better verification stats than the GFS at day 5?

maybe, but honestly if you have two teams, first has the euro and the gfs on it, and second has the uk, nogaps, ggem on it...

I'm choosing team 1 everytime.

fully aware of the blind squirrel thing

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Exactly how I'm feeling at this point. However, I'd wait until this thing gets sampled to throw in the towel regardless.

I doubt sampling will help much. Issue is further north and thus that block i posted about. THAT is what you need to hope that the models are wrong with. Nothing can come too far nw with that thing in the way.

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