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January 26-27 Storm Threat


Baroclinic Zone

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  On 1/23/2011 at 6:29 AM, Logan11 said:

Maybe I should be liking these 0Z runs. The last Noreaster at this stage I think most models were out to sea and trended west the last few days. A trend west this time could finally get a good event out here. I'm afraid the central and western NY people are finished though....after a few days of thinking this was their storm.

I like the fact that the ensembles of every model have been clustered near the BM seemingly since PD I, though.

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  On 1/23/2011 at 6:29 AM, Logan11 said:

Maybe I should be liking these 0Z runs. The last Noreaster at this stage I think most models were out to sea and trended west the last few days. A trend west this time could finally get a good event out here. I'm afraid the central and western NY people are finished though....after a few days of thinking this was their storm.

Rick...you get about an inch qpf on this Euro run.

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  On 1/23/2011 at 6:26 AM, 40/70 Benchmark said:

I mentioned it before, but don't forget that this arctic episode is going to knock the marine layer on it's azz well out into the atl, so that is going buy the immediate coastline a bit more time than they normally would expect.

This is a good point actually. The modification rate might not compensate this type of air mass as would be otherwise typical.

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  On 1/23/2011 at 6:33 AM, 40/70 Benchmark said:

Obviously, but why doesn't the GFS is the question....

The GFS has trouble doing this as we've seen time and again. The final run or 2 before the event it ends up better but it appears to be one of the issues. Use it for general guidance but the Euro and the other mesos can be used for finer details is what I've learned this year.

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  On 1/23/2011 at 6:33 AM, 40/70 Benchmark said:

Obviously, but why doesn't the GFS is the question....

Because the euro has less confluence to the north. The 500 height lines are allowed to make that classic "s" shape. This allows for moisture to wrap way back to the west. The Euro is more like 50-60 miles nw,

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  On 1/23/2011 at 6:35 AM, weathafella said:

The GFS has trouble doing this as we've seen time and again. The final run or 2 before the event it ends up better but it appears to be one of the issues. Use it for general guidance but the Euro and the other mesos can be used for finer details is what I've learned this year.

Yea, I didn't saying I'm buying it, but it gives me a little pause....

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  On 1/23/2011 at 6:36 AM, CoastalWx said:

Because the euro has less confluence to the north. The 500 height lines are allowed to make that classic "s" shape. This allows for moisture to wrap way back to the west. The Euro is more like 50-60 miles nw,

Catch 22.....be careful what we wish for....

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  On 1/23/2011 at 6:36 AM, CoastalWx said:

Because the euro has less confluence to the north. The 500 height lines are allowed to make that classic "s" shape. This allows for moisture to wrap way back to the west. The Euro is more like 50-60 miles nw,

I thought by the time it crossed near the BM, the difference was closer to 20 but my eyes could be wrong....

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  On 1/23/2011 at 6:33 AM, Typhoon Tip said:

This is a good point actually. The modification rate might not compensate this type of air mass as would be otherwise typical.

If you remember the NJersey bomb, HPC kept mentioning the destabilization of the Gstream air due to Arctic air flowing over it for days making it a breeding ground for copious moisture to be advected, guess what.

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  On 1/23/2011 at 6:34 AM, 40/70 Benchmark said:

Doesn't hurt that we have inlets freezing, either.

OT ... But if anyone gets a chance, arctic sea smoke is an awesome spectacle. Tomorrow and particularly Monday morning will probably be fantastic!!

I recall once living in Rockport as many as 20 steam dogs at once dancing across the sea sfc during a 0F morning, cut through by corpuscular rays.

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  On 1/23/2011 at 6:38 AM, weathafella said:

I thought by the time it crossed near the BM, the difference was closer to 20 but my eyes could be wrong....

The 500 pattern alone argues for a nw path on the euro. It might also depend on the resolution, but it looked like a fairly large nw jog from the GFS.

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  On 1/23/2011 at 6:40 AM, CoastalWx said:

The 500 pattern alone argues for a nw path on the euro. It might also depend on the resolution, but it looked like a fairly large nw jog from the GFS.

Well if we can keep this position and lock it in we're fine. Any further jog W will not be good for us.

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  On 1/23/2011 at 6:41 AM, weathafella said:

Well if we can keep this position and lock it in we're fine. Any further jog W will not be good for us.

Yeah that's what I don't want to see. I just wish it were 36 hours out. My guess is a track near ACK. If we can keep the low at that longitude, surface temps should be ok.

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