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Thanksgiving Week Nor'easter Discussion


Zelocita Weather

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Euro has a 996mb low south of LI at 138hrs. Heavy snow NW of I-95. Mix near the coast.

Yea this can go either way at this point, but the trend has been colder. If the low wasn't strung out this run I'm convinced we would all be mostly snow.

If the southern branch slows by a few more hours we are in business.

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A few things. Looking at the maps, the high is in an absolutely terrible position. I do not see how we'd be cold enough with the high out there in the Atlantic. In addition, this track is still doubtful in my book. The Euro trended significantly to the right of where it tracked the storm yesterday 12Z, and now, you have to question whether it might keep on trending further offshore. There is NO blocking for this event/non-event. This system if it comes up the coast or tries to is going to be moving extremely fast. Precipitation amounts as a result could be overdone by the models. What's more, on this run, at 240 hours there is a storm which to me, if it doesn't move to close to us, might have a better shot for somewhere between December 2nd and 4th. For this set-up it appears as though there might be a slight amount of high lattitude blocking and there's a possible 50/50 low setting up there.

WX/PT

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A few things. Looking at the maps, the high is in an absolutely terrible position. I do not see how we'd be cold enough with the high out there in the Atlantic. In addition, this track is still doubtful in my book. The Euro trended significantly to the right of where it tracked the storm yesterday 12Z, and now, you have to question whether it might keep on trending further offshore. There is NO blocking for this event/non-event. This system if it comes up the coast or tries to is going to be moving extremely fast. Precipitation amounts as a result could be overdone by the models. What's more, on this run, at 240 hours there is a storm which to me, if it doesn't move to close to us, might have a better shot for somewhere between December 2nd and 4th. For this set-up it appears as though there might be a slight amount of high lattitude blocking and there's a possible 50/50 low setting up there.

WX/PT

 

Great post & I agree, the 240 hour EURO looks like a better shot at a snowstorm because we have a 50/50. 

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No more messing around guys. This thing has got a name now via TWC, Boreas!

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

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The trend in the 00z has been for a quicker earlier phase. The 00z euro would def change everyone over for a period of snow. The cold air seems to be just to our west, would really like to see the high postion just nw of buffalo. Doubt the coast gets all snow, but that's par for the course this early in season. Interior areas should keep a close eye on this.

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The trend in the 00z has been for a quicker earlier phase. The 00z euro would def change everyone over for a period of snow. The cold air seems to be just to our west, would really like to see the high postion just nw of buffalo. Doubt the coast gets all snow, but that's par for the course this early in season. Interior areas should keep a close eye on this.

Agreed.  Seems like this is a classic interior set up where climatology favors it.  I'm at 900' in Sussex County and I'm biting my nails on rain vs. snow...

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Agreed. Seems like this is a classic interior set up where climatology favors it. I'm at 900' in Sussex County and I'm biting my nails on rain vs. snow...

Beautiful up there! Was in Vernon Valley a few weekends ago with my gf, stayed at Colorado Springs. Had a really good time

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Beautiful up there! Was in Vernon Valley a few weekends ago with my gf, stayed at Colorado Springs. Had a really good time

Thanks man. We LOVE it here.

 

What I learned last year is that it pretty much always snows on any 'borderline' event here.  That's what makes me cautiously optimistic about this event...but it is damn early in the year!

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The general feel is that no blocking equals no storm or a messy storm, but that's not always the case. You don't absolutely have to have blocking for a phased storm, but it helps. It certainly prolongs a storm but a ridge out west helps too.

That ridge is what is trying to help phase the southern stream so we get a nice storm. I would not be looking at a snow event if I lived near the coast, it's highly unlikely. You would need to storm to deepen faster and be a lot stronger for that to happen.

So while blocking isn't required, it definitely helps.

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I'm not seeing how there can be much snow anywhere near the coast without the northern stream phasing in a lot quicker. Maybe inland there can be a stripe of snow for a while. The best I can see is there being some precip around when the northern stream finally comes in and delivers cold air to the coast. This is where more blocking can really come in handy.

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