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Thanksgiving Week Nor'easter Discussion


Zelocita Weather

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its more strung out this run and weak…..also further east. Looks like Ramsey NJ gets some light rain...

 

I wonder if the second low can become the dominant feature and come up to coast, the 500mb vort is much slower now than 18z so that might support the second low in future runs.

 

- Its not going to happen this run but it something I will be watching as that low would be dealing with much colder air up here.

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GGEM is still going with an inland runner...

attachicon.gifGGEM.gif

As I've been saying, I think either the inland runner or the OTS solutions make the most sense. It is hard to thread the needle when none of the weather systems are in the right place for a strong coastal storm. At this point, I still slightly favor the mostly OTS track. We could also get a significant amount of moisture drawn up the coast way out ahead of any organized low center, then the low goes OTS and takes the next bundle of moisture with it. These are still all possibilities.

WX/PT

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0z Euro has the 2 low scenario. The first low goes right on top of NYC. Heavy rain for coastal areas. There isn't a lot of precip on the western side of this storm so on this run, not many people see snow.

 

This is not right. 1"+ total qpf is goes back to BGM. The first low much warmer and inland runner. 850mb temps gets as high as +8 to +10C for NYC and LI.

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and will end up with the nickname "Boring" Boreas" - with all the indicies in generally unfavorable positions and the fast flow helped by a lack of a negative enough NAO - ole  Boring will have difficult time winding up and will more then likely end up a strung out fast flow mess - precip amounts will probably end up quite a bit less then currently advertised as has happend all fall in this type of fast flow. Precip types along the coast will be mainly liquid because of a lack of intensity which is needed in this type of marginal cold set-up and time of year - example: the last 2 years snowfalls in Oct and November had enough precip intensity to create a colder atmosphere for frozen

I still agree with myself 24 today

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Too bad the second low can't ride up. It would certainly be cold enough.

The system is a sheared out mess. That's what happens in a progressive pattern like this where nothing can phase or organize in time. It wouldn't surprise me to see a fish storm altogether but the other models being much more amplified gives me some confidence we at least see some rain.

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Looking at it id think the best chance for the NYC metro would be if the southern stream system slows down even more/ejects later and that kicker shortwave is a bit faster. as per the GFS, if anything is going to "catch" the southern stream it would be that second s/w.... A least if I'm reading this right

That's just if the GFS or a GFS like solution were to verify at least

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The threat for organized snow in this region is pretty much over. Looks like most likely scenarios are 50's and rain or 30's and partly cloudy.

This was never a snow threat for our region so long as the northern stream was separate from our main low. SW winds are in force well before the storm gets here. There's maybe a stripe west of I-81 that can have some appreciable snow if models like the Euro are right, but it won't be a widespread area anywhere east of the mountains.

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This was never a snow threat for our region so long as the northern stream was separate from our main low. SW winds are in force well before the storm gets here. There's maybe a stripe west of I-81 that can have some appreciable snow if models like the Euro are right, but it won't be a widespread area anywhere east of the mountains.

Areas well NW (more than 40 miles NW of NYC) have the best chance at seeing any snow. The rest of the area might see some flurries or a brief mix.
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This was never a snow threat for our region so long as the northern stream was separate from our main low. SW winds are in force well before the storm gets here. There's maybe a stripe west of I-81 that can have some appreciable snow if models like the Euro are right, but it won't be a widespread area anywhere east of the mountains.

I agree. Don't know if pp knew what we're looking at all week. This was always rain for the coast on an east wind In any event don't count on an OTS solution unless u see the EU ensembles follow suit Wed is prob a cold rain. I ignore the GFS and it's typical error at this range. I Will only give it credence if the EC follows it

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