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12/20 Pre Grinch Mood Snows


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Nah..it's mostly just Sunday into Sunday nite

Not really

 

MONDAY INTO TUESDAY...MODERATE CONFIDENCE.

WEAK COASTAL LOW PRESSURE SYSTEM WILL DEVELOP AND MOVE SOMEWHERE

BETWEEN THE BENCHMARK AND WELL OFFSHORE. BELIEVE A SOLUTION FATHER

OUT TO SEA IS POSSIBLE DUE TO STRONG HIGH PRESSURE IN EASTERN

CANADA. REGARDLESS A ROUND OF SHOWERS WILL MOVE ACROSS THE REGION

WITH THE COASTAL AREAS HAVING THE BEST SHOT TO SEE PRECIP. THERMAL

PROFILES WILL ALLOW FOR SNOW AT NIGHT AND RAIN DURING THE DAY.

TEMPERATURES WILL SLOWLY BEGIN TO WARM AS SOUTHERLY FLOW BECOMES

DOMINATE OUT AHEAD OF STRONGER SYSTEM TO THE EAST.

 

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The original disturbance is very late Saturday and Sunday which doesn't give us much except maybe some low level weenie snow or FZDZ if it even gets the flow going enough out of the east...but there's another wave that tries to form out ahead of the Grinch storm now that looks a little more juicy but not as cold.

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Very weak wave and onshore flow may generate light flurries or a light mix late Saturday night and Sunday morning. The next coastal wave doesn't develop until Monday and there is still a chance that can go OTS if the high pressure over Eastern Canada is a little stronger and further south and if it does make it up this way it will probably be it late mix changing to rain

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The original disturbance is very late Saturday and Sunday which doesn't give us much except maybe some low level weenie snow or FZDZ if it even gets the flow going enough out of the east...but there's another wave that tries to form out ahead of the Grinch storm now that looks a little more juicy but not as cold.

sorry I didn't see your post I must have been typing it on my phone at the same time that you were

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I still believe Sunday is going to surprise some people.. You've got a classic east flow over cold dome setup with the one low going out to our south and the cold High to our north.. You can sort of envision those small flakes coming down, It might snow all day only adding up to an inch or something like..but it's something anyway

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I still believe Sunday is going to surprise some people.. You've got a classic east flow over cold dome setup with the one low going out to our south and the cold High to our north.. You can sort of envision those small flakes coming down, It might snow all day only adding up to an inch or something like..but it's something anyway

 

Models have really backed off on it.

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:facepalm:

All are in dire need of a widespread blanket of 6-10" across the landscape. Nothing resembling that till next year. Any comments in regards to micro-analysing nuances only clutters, and lessens credibility.

Woah there, it is 12/18. Let's not be making deterministic forecasts for New Year's Eve quite yet.

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Yeah you would do good to bad theres no cold air around would even be a good storm track for here

 

 

It also shows on the grinch storm how it can snow on the backside as it wraps the colder air around with the whole system being a little further east, As modeled, More folks would like the 12z Para GFS results

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12z GFS is like the NAM. Def more robust mainly due to hanging back a lot of vort energy and allowing the next s/w in the lakes to almost get absorbed into it.

Would prob be a coating to an inch type deal.

Yup..one of those deals where we snow all day ..little tiny flakes..with an inch or so to show for it.. 

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Euro has the same general idea with the vortmax from the lakes nearly catching up to the one that hangs back on Sunday...result is sort of a strung out weakness in the upper level field with weak onshore flow and some decent low level moisture.

So while nothing impressive, there could at least be some good mood snows on Sunday and perhaps enough to whiten everything up. But you know the deal on these mesoscale type events...they can disappear, reappear, and then disappear again until we are very close.

In adddition...this is really a seperate system...but 12/23 is looking a bit colder too, so if that wave can push some decent precip into the region, at least the interior may see accumulating snows. But we've got plenty of time on that one.

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Euro has the same general idea with the vortmax from the lakes nearly catching up to the one that hangs back on Sunday...result is sort of a strung out weakness in the upper level field with weak onshore flow and some decent low level moisture.

So while nothing impressive, there could at least be some good mood snows on Sunday and perhaps enough to whiten everything up. But you know the deal on these mesoscale type events...they can disappear, reappear, and then disappear again until we are very close.

In adddition...this is really a seperate system...but 12/23 is looking a bit colder too, so if that wave can push some decent precip into the region, at least the interior may see accumulating snows. But we've got plenty of time on that one.

Yeah a little inv trough action. Might even be cold enough here looking at the lower levels. 

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Nam looks good for a nice solid steady light snow. This is def gonna go under the radar of some as it continues right into Monday pm.

Not sure I would call it "solid steady light snow"...more like little weenie flakes with like 3 mile vis and at times you get luckier with a better burst. It might be best near the coast like that mini-event before Dec 9.

We'll see how it looks as we get closer...some of it is going to depend on how the vort energy is oriented because that will either aid the situation with an inverted sfc trough or it could harm it if it is in the wrong place and cause some subsidence.

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Not sure I would call it "solid steady light snow"...more like little weenie flakes with like 3 mile vis and at times you get luckier with a better burst. It might be best near the coast like that mini-event before Dec 9.

We'll see how it looks as we get closer...some of it is going to depend on how the vort energy is oriented because that will either aid the situation with an inverted sfc trough or it could harm it if it is in the wrong place and cause some subsidence.

It seems like there's some sort of vorticity that tracks near Nyc across the extreme south coast. We'll have to see how it all shakes out
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