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12z Euro


earthlight

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Albeit similar, the track and storm type for Dec 2004 does not fit the type we may see this wknd...and apparently Nov 87 happened to produce those snow totals not due to track but banding? (I forgot who mentioned it earlier) So in reality this type of setup is most likely extremely rare and I bet it doesn't end up happening as modeled by the euro this aftn...

Im fascinated by which model wins out with this one and if it sets a pattern for the winter.

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Tombo,

I didn't see if you posted precip totals, but this doesn't look too bad for us here in E PA?

phl gets about 0.25" with less to the north. dc gets about 0.75" while new england gets plastered. nj/pa/nyc is the screw zone on this particular run of the euro.

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Last winter all over again so far. Let's hope it gets better.

Would you rather it show 12" 7 days away? This isn't last winter, there is a mod-strong La Nina and that teleconnects to a SE Ridge which is gone on this model. Why is it gone? Or is the model just getting rid of it too quickly.. I'm trying not to get too excited/depressed for model runs 7 days out, but it's not too promising.

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Would you rather it show 12" 7 days away? This isn't last winter, there is a mod-strong La Nina and that teleconnects to a SE Ridge which is gone on this model. Why is it gone? Or is the model just getting rid of it too quickly.. I'm trying not to get too excited/depressed for model runs 7 days out, but it's not too promising.

It's not gone, the tremendous blocking is just suppressing it. The model's solution actually makes sense, if the features were to be realized. The block is strong, the shortwave is able to amplify as the ridge builds in the west, and the rapid deepening occurs off the coast. How these specific features are handled will be more important than the southeast ridge itself. We have a pretty good signal for very strong blocking right now.

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Does anyone think that the 12z ECMWF is reasonable at least up to the point where the storm reaches the VA coast by hour 144? I noticed that for the last 4 days, the 12z ECMWF runs were consistent with at least some storm just off the Mid Atlantic coast around Sunday at 12z, while showing a stronger storm well offshore with some kind of negative tilt to it around Monday at 12z.

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Does anyone think that the 12z ECMWF is reasonable at least up to the point where the storm reaches the VA coast by hour 144? I noticed that for the last 4 days, the 12z ECMWF runs were consistent with at least some storm just off the Mid Atlantic coast around Sunday at 12z, while showing a stronger storm well offshore with some kind of negative tilt to it around Monday at 12z.

Yeah I think most models (exception being the GFS) have a storm around the coast by that time. The difference of course is what happens after that...

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Does anyone think that the 12z ECMWF is reasonable at least up to the point where the storm reaches the VA coast by hour 144? I noticed that for the last 4 days, the 12z ECMWF runs were consistent with at least some storm just off the Mid Atlantic coast around Sunday at 12z, while showing a stronger storm well offshore with some kind of negative tilt to it around Monday at 12z.

This goes back to the shortwave that comes out of Canada initially early in the run. It's not in the greatest RAOB area right now but will be tomorrow 00z, in a better spot. You can see the shortwave on the 21z SREF's towards 84 hrs. Watch the guidance handling of this feature earlier in the run--we need it to amplify as it's own entity like the ECMWF, not as part of the big ULL over the Northeast like the GFS.

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The 00z NAM is similar to the GFS in it's handling of the shortwave out west that would be our clipper Dec 5. The huge ULL/entity over the east is also very overbearing and building a ridge over the Central US. The 12z Euro was weaker with this ridge and the downstream flow..and stronger with the shortwave out west. Basically, it's a bit of an outlier right now.

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The 00z NAM is similar to the GFS in it's handling of the shortwave out west that would be our clipper Dec 5. The huge ULL/entity over the east is also very overbearing and building a ridge over the Central US. The 12z Euro was weaker with this ridge and the downstream flow..and stronger with the shortwave out west. Basically, it's a bit of an outlier right now.

So basically we can forget about any snow event next week.

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