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Holiday week storm(s) discussion


earthlight

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The ECMWF setup to me looks alot like 1/8/99 but with a significantly less cold air supply prior to the event. Most areas saw a 4-6 inch blast before it went over.

I'd rather it at least be warm in a horrendous setup like this, rather than it be frigid after warm, torch rain events. Looks like the AK vortex will scour most of the cold air out from North America, so at least we won't have to deal with that. :D

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Question, to me it looks possible that the storm could intensify even more than what is currently being modeled by the Euro. If you look at the way that energy dives down from Canada and down into the Gulf, it would seem there is a possibility that this storm could be even more intense. The question is, if it is more intense, would this pull down more cold air into our area?

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Question, to me it looks possible that the storm could intensify even more than what is currently being modeled by the Euro. If you look at the way that energy dives down from Canada and down into the Gulf, it would seem there is a possibility that this storm could be even more intense. The question is, if it is more intense, would this pull down more cold air into our area?

NO. You would probably have a bigger phase and it will run closer to the coast or more like up the Hudson Valley, ala the GGEM.

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Just as an added kick to the teeth, the end of the Euro run shows a nice storm taking a 40/70 track, but absolutely no cold air to work with due to the assault of Pacific air across the whole continent.

Me and DT were going back and forth last December in the main forum regarding the statistical likelihood NYC sees snow from a benchmark track between the dates of 12/15-3/15. I said 90-95% of the time, he was arguing about 70%. Either way, its never a good sign of the pattern when that occurs in that 90 day period. In 1997-98 it happened almost weekly.

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Me and DT were going back and forth last December in the main forum regarding the statistical likelihood NYC sees snow from a benchmark track between the dates of 12/15-3/15. I said 90-95% of the time, he was arguing about 70%. Either way, its never a good sign of the pattern when that occurs in that 90 day period. In 1997-98 it happened almost weekly.

yup.

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Yes, it is amazing. Storms in the right spot but NO cold air to work with.

Me and DT were going back and forth last December in the main forum regarding the statistical likelihood NYC sees snow from a benchmark track between the dates of 12/15-3/15. I said 90-95% of the time, he was arguing about 70%. Either way, its never a good sign of the pattern when that occurs in that 90 day period. In 1997-98 it happened almost weekly.

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On E-Wall it looks like areas could change back to snow on the back side, 850 temps crash (12z ECMWF)

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We need more negative tilt at 500mb to get a backend snow there, remember there are 2 ways to really get back end snows here. The first is a vertically stacked system like 12/25/02 where you get a deformation zone to form and the system is slow to exit, the 2nd is similar to what the Euro shows above but the surface low needs to take on more of a NNW motion over New England and the 500mb trough has to tilt more negative.

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Euro, even though is a lot of rain,

is the ONLY model left that even has any snow for the event. As depicted, the 12z euro has a couple hours of front end snow, away from the immediate coast.

Its completely on its own with respect to that, and in this pattern, I fully expect it to warm significantly on the next couple of runs.

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Euro, even though is a lot of rain,

is the ONLY model left that even has any snow for the event. As depicted, the 12z euro has a couple hours of front end snow, away from the immediate coast.

Its completely on its own with respect to that, and in this pattern, I fully expect it to warm significantly on the next couple of runs.

I don't have the precip maps but at 120 hours the Euro looks like it COULD be snowing at the coast, 850s are -4C, the 700mb RHs are near 90-100% and it appears the northern end of the precip shield runs from TTN-NYC roughly...BUT, I cannot see the surface temps. There does appear to be a bit of CAD signature from the high though, so if you ask me its snowing from 120-126 hours.

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surface temps along coastal New Jersey at 120 - 126 hours are unfortunately low to mid 40's. Once you get south of about Rt. 78 the snow hopes fade rather quickly.

I don't have the precip maps but at 120 hours the Euro looks like it COULD be snowing at the coast, 850s are -4C, the 700mb RHs are near 90-100% and it appears the northern end of the precip shield runs from TTN-NYC roughly...BUT, I cannot see the surface temps. There does appear to be a bit of CAD signature from the high though, so if you ask me its snowing from 120-126 hours.

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I don't have the precip maps but at 120 hours the Euro looks like it COULD be snowing at the coast, 850s are -4C, the 700mb RHs are near 90-100% and it appears the northern end of the precip shield runs from TTN-NYC roughly...BUT, I cannot see the surface temps. There does appear to be a bit of CAD signature from the high though, so if you ask me its snowing from 120-126 hours.

Wunderground shows the surface temps in the mid 30's and rising fast. But there is a 3-5 hour window of precip falling as things are still cold enough. Especially away from the coast.

This is for Northern NJ and into NYC.

South of there and along LI coast, surface temps are in the low 40's.

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A tad interesting on the 18z NAM

Energy closes off over the TX panhandle, meanwhile energy is diving through the Rockies, could this eventually catch up to the closed off energy and phase or would this definitly act as a "kicker" shortwave? Meanwhile northern stream energy comes through the Great Lakes mucking up the picture. Looks quite a bit different than the 12z GFS for the same time table. On the Goofus the trough over the the Lakes is actually in SE Canada and much more amplified. The S/W over the midwest is not closed off and is a few hundred miles northeast of the NAM. Finaly, the energy diving down through the Rockies on the NAM is actually over Los Angles on the 12z Goofus. The Euro is sort of in between.

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