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NYC/PHL December 24-27 Potential Part 3


earthlight

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Yea, I dont know why people thought the euro would cave in completely-- the GFS did some of that today. This is a compromised track which leans more towards the euro-- which is pretty much what HPC said would happen.

A Euro-leaning compromise wouldn't be too bad. Hopefully it isn't the start of a faster trend on the Euro.

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The bottom line is this, the faster the southern S/W is, the likely weaker it is and likely further east the ultimate solution will be. That simple. The Euro sped up a little bit but is still nowhere near the GFS depiction at 60. The Euro has a strong, separate feature near Houston that's cut off at that point. The GFS has it near Montgomery, AL and has it as a somewhat sheared out feature getting eaten up by the northern stream. The ggem doesn't even have a southern feature by then. The stronger and more held back that feature is, the more the northern branch energy dives into it and the further west the phase and ultimate capture is. If it speeds up to the east like the GFS, it causes the whole trough to broaden and shear out as the northern stream feature has to take more time to catch it and phase. We want the phase to happen near the MS Valley so that the capture can take place while the low is still near the NC or SC coast. The wave sped up a little on this Euro run, but not much at all. It also remains a much stronger and distinguished feature. The model war continues!! Tomorrow should bring a more unified solution (hopefully).

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The bottom line is this, the faster the southern S/W is, the likely weaker it is and likely further east the ultimate solution will be. That simple. The Euro sped up a little bit but is still nowhere near the GFS depiction at 60. The Euro has a strong, separate feature near Houston that's cut off at that point. The GFS has it near Montgomery, AL and has it as a somewhat sheared out feature getting eaten up by the northern stream. The ggem doesn't even have a southern feature by then. The stronger and more held back that feature is, the more the northern branch energy dives into it and the further west the phase and ultimate capture is. If it speeds up to the east like the GFS, it causes the whole trough to broaden and shear out as the northern stream feature has to take more time to catch it and phase. We want the phase to happen near the MS Valley so that the capture can take place while the low is still near the NC or SC coast. The wave sped up a little on this Euro run, but not much at all. It also remains a much stronger and distinguished feature. The model war continues!! Tomorrow should bring a more unified solution (hopefully).

Yea thats what im wondering. In the 0z model thread midlo posted images of ggem gfs ukie init and the sw was noticeably weaker than actual. Im wondering if the euro had the same problem.

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Sucks for them down south, but this run amplifies and gets captured on time for us, and takes a nice track for the City. I can live with this. Still a nice run, but faster.

Yep, I'm happy with this run as long as it's not the start of a trend. Could've been a lot worse considering how crappy all of the other models looked. It also shows that a slightly faster solution would still be able to hit our area pretty hard. We definitely have more wiggle room than MD/DC/VA do.

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Yea thats what im wondering. In the 0z model thread midlo posted images of ggem gfs ukie init and the sw was noticeably weaker than actual. Im wondering if the euro had the same problem.

Its possible, and the same brand (different flavor) of mis-analysis occurred last week when the shortwave came ashore (except it was too strong instead of too weak). That's the sort of thing that messed up the EC for that one run it showed the bomb.

Like I said before, the shortwave should be well sampled at 12Z.

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Yea thats what im wondering. In the 0z model thread midlo posted images of ggem gfs ukie init and the sw was noticeably weaker than actual. Im wondering if the euro had the same problem.

We should know by 12z tomorrow what the truth is. The RUC init at least had a closed 534 contour near L.A. tonight, and every model was open with the wave at init. Tomorrow it will be very well sampled as it heads almost directly over Los Angeles and southern Cal.

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this differs quite a bit from the map you made earlier today, no?

NYC went from like 1.65 back to 1.1 But 1.1 is what the qpf estimate was in the euro run prior to that from 0z last night.

QPF totals look a lot like what the 0z euro had last night, at least for our area.

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Its possible, and the same brand (different flavor) of mis-analysis occurred last week when the shortwave came ashore (except it was too strong instead of too weak). That's the sort of thing that messed up the EC for that one run it showed the bomb.

Like I said before, the shortwave should be well sampled at 12Z.

what did the s/w come onshore as? the euro init it as an open h5 low.

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We should know by 12z tomorrow what the truth is. The RUC init at least had a closed 534 contour near L.A. tonight, and every model was open with the wave at init. Tomorrow it will be very well sampled as it heads almost directly over Los Angeles and southern Cal.

SO JM would that give us a better idea by 12z tomorrow or 0z tomorrow night with the new data?

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Its possible, and the same brand (different flavor) of mis-analysis occurred last week when the shortwave came ashore (except it was too strong instead of too weak). That's the sort of thing that messed up the EC for that one run it showed the bomb.

Like I said before, the shortwave should be well sampled at 12Z.

Ray, wth is the raob deal with the south Nevada air force base or whatever was there. They used to do RAOBs all the time except weekends/holidays but i haven't seen them do one in a long time. rrs upgrade or did they shut down?

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