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NYC/PHL Potential Jan 11-14 Event Discussion


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that 0 line is too close for comfort, especially with that model's known SE bias.

the coastal tracks are fine, its the primary low. In a lot of them it holds on to long which screws a good amount of people. No need to get all rattled over it, 6z will have a different solution. It just should be noted that this is deff an option on the table.

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the coastal tracks are fine, its the primary low. In a lot of them it holds on to long which screws a good amount of people. No need to get all rattled over it, 6z will have a different solution. It just should be noted that this is deff an option on the table.

I remember this happened quite a bit in 06-07, which is why we saw so much sleet that winter lol. But the blocking this year has been much stronger, so we'll see. :)

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The Euro ensembles are slightly further northwest than the OP..they also have a small closed off H5 contour over PA at 126 hrs.

Very encouraging signals from these past few/several model cycles. Seems like with each run the northern s/w is catching the leading southern s/w faster/sooner causing more of a amped trough over the EC resulting in the faster phase. If this continues and I wouldn't be surprised given the 50/50 low block, this storm could and has the potential to be a classic EC I-95 special SECS (BOS-RIC?) ...which we haven't seen in a while. IF the Euro starts showing a closed h5 after phase over the Ohio valley/MA then at least this area should be game.

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the coastal tracks are fine, its the primary low. In a lot of them it holds on to long which screws a good amount of people. No need to get all rattled over it, 6z will have a different solution. It just should be noted that this is deff an option on the table.

So true. Every run seems to produce a different scenario. The storms and potentials are there, but one time it shows some snow, then another rain or p-type issues, then another next to nothing. To me, anything past hr 180 is really fantasy land, and specific outcomes wrt precip types, etc, should be taken with a grain of salt.

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So true. Every run seems to produce a different scenario. The storms and potentials are there, but one time it shows some snow, then another rain or p-type issues, then another next to nothing. To me, anything past hr 180 is really fantasy land, and specific outcomes wrt precip types, etc, should be taken with a grain of salt.

This is 4-5 days out not past 180 however...but i agree with past 180 philosophy!

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This is 4-5 days out not past 180 however...but i agree with past 180 philosophy!

My bad. I thought Tom was talking about the GFS threat for Sunday 1/16-Monday1/17. As of the 0z GFS, it looks like rain, or at least p-type issues, then the cold air mother load drops in.

Which has already changed from the last time I looked at it. The 06z now shows a colder solution for the potential storm, but backed off a bit from the EXTREME cold that followed it. :lol:

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My bad. I thought Tom was talking about the GFS threat for Sunday 1/16-Monday1/17. As of the 0z GFS, it looks like rain, or at least p-type issues, then the cold air mother load drops in.

Which has already changed from the last time I looked at it. The 06z now shows a colder solution for the potential storm, but backed off a bit from the EXTREME cold that followed it. :lol:

your right i was talking bout the gfs for the monday event. I was commenting on the 0z gfs ens which showed a great coastal track, but the primary is what killed the coastal plain cause it takes longer for it to transfer.

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Good Friday Morning To You All. Drive safely Today.

Didn't see a lot of talk on it, but the UKMET model showed great improvement from its previous runs and it appears to be deepening rapidly on the 40/70 bench mark. It seems to be moving towards the primary into the ohio valley with secondary development. I believe the UKMET model has had difficulty showing phased solutions this winter in the long range so this is interesting.

f120.gif

f144.gif

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I still don't have a blessed clue what's going to happen. I checked the ops models first this morning and wasn't all that impressed. A light to moderate event to be sure, but nothing that would be crippling. Then I got to the ensemble guidance and they are all more amplified than their respective ops runs (0z GFS, 0z Euro, 6z GFS - not a fan of CMC ENS ever). The Euro is really impressive, showing late redevelopment and a Buckeye snowstorm to missing the coast by 500 mi.

I'd probably take the middle of the road solution of a light to moderate event right now, but given the way the last two winters have gone, someone in Jersey will probably pick up 20".

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I still don't have a blessed clue what's going to happen. I checked the ops models first this morning and wasn't all that impressed. A light to moderate event to be sure, but nothing that would be crippling. Then I got to the ensemble guidance and they are all more amplified than their respective ops runs (0z GFS, 0z Euro, 6z GFS - not a fan of CMC ENS ever). The Euro is really impressive, showing late redevelopment and a Buckeye snowstorm to missing the coast by 500 mi.

I'd probably take the middle of the road solution of a light to moderate event right now, but given the way the last two winters have gone, someone in Jersey will probably pick up 20".

Interesting that your brought up the CMC ensembles. They were very bullish yesterday at 12z while the operation was not. Now they have switched a little. Not sure if this is the ensembles doing what they normally due with their lesser resolution or saying that the operational went too far west.

One thing is for sure, we have a long way to go.

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Interesting that your brought up the CMC ensembles. They were very bullish yesterday at 12z while the operation was not. Now they have switched a little. Not sure if this is the ensembles doing what they normally due with their lesser resolution or saying that the operational went too far west.

One thing is for sure, we have a long way to go.

The Canadian ensemble package uses an initialization scheme that maximizes variance between the members versus ours and the Euro which have some of those but also try to constrain the perturbations to realistic solutions. I just don't find it that useful operationally.

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The Canadian ensemble package uses an initialization scheme that maximizes variance between the members versus ours and the Euro which have some of those but also try to constrain the perturbations to realistic solutions. I just don't find it that useful operationally.

Oh I see, you were speaking of them in terms of how they are produced, not the actual solution.

Looking at the plots, there are good, bad, and in the middle solutions to be expected.

2011010700_054_E1_north@america_I_ENSEMBLE_pnm@moy_132.png

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