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feb 27-28 potential winter storm


earthlight

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The storm looks like a wind driven rain event, march 13 2010 type? TBA haha

Different setup-that was actually a coastal low that bended NW toward the NJ coast. It wasn't even that strong of a low and the very high winds weren't in that widespread an area. The dynamics focused themselves over a relatively small area that hammered southern LI and then Westchester Co.

That was one ferocious wind event. I can't remember ever being in a storm where wind frequently gusted up to 80 mph, and the tree/house damage afterwards was unbelievable. Parts of my town were w/o power for a week.

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This thread has gotten sidetracked with next week's storm(s), but the Sun Feb 27 threat is still very much on the table. The Euro is most bullish on it and has been consistent for 4-5 runs now on a fast-moving northern stream system which picks up a bit of Gulf moisture and has the potential to bring widespread light snow to the NYC area.

The past 2 runs of the Canadian have an upstream northern stream system amplifying, which forces the Sun system to move further north and bring more warm air in. It does have snow for interior areas just N of NYC.

The UKMET has what appears to be a nice overrunning setup with a weak wave moving south of New England.

Much depends on how much energy remains in the SW US. The more consolidated/slower the energy in the SW US is, the more ridging will build over the Plains, which helps our northern stream system to dig more. The Euro bias is to keep energy in the SW US moving too slowly, so that must be considered.

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This thread has gotten sidetracked with next week's storm(s), but the Sun Feb 27 threat is still very much on the table. The Euro is most bullish on it and has been consistent for 4-5 runs now on a fast-moving northern stream system which picks up a bit of Gulf moisture and has the potential to bring widespread light snow to the NYC area.

The past 2 runs of the Canadian have an upstream northern stream system amplifying, which forces the Sun system to move further north and bring more warm air in. It does have snow for interior areas just N of NYC.

The UKMET has what appears to be a nice overrunning setup with a weak wave moving south of New England.

Much depends on how much energy remains in the SW US. The more consolidated/slower the energy in the SW US is, the more ridging will build over the Plains, which helps our northern stream system to dig more. The Euro bias is to keep energy in the SW US moving too slowly, so that must be considered.

The GFS has a rainstorm. I don't like the pattern that we are in.:thumbsdown:

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This thread has gotten sidetracked with next week's storm(s), but the Sun Feb 27 threat is still very much on the table. The Euro is most bullish on it and has been consistent for 4-5 runs now on a fast-moving northern stream system which picks up a bit of Gulf moisture and has the potential to bring widespread light snow to the NYC area.

The past 2 runs of the Canadian have an upstream northern stream system amplifying, which forces the Sun system to move further north and bring more warm air in. It does have snow for interior areas just N of NYC.

The UKMET has what appears to be a nice overrunning setup with a weak wave moving south of New England.

Much depends on how much energy remains in the SW US. The more consolidated/slower the energy in the SW US is, the more ridging will build over the Plains, which helps our northern stream system to dig more. The Euro bias is to keep energy in the SW US moving too slowly, so that must be considered.

Well, there is still this too FWIW

post-4973-0-01275100-1298482894.gif

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Excuse my ignorance but how does ag3's post indicate a rainstorm? Was that the right image?

hey sundog.. sorry.. there is a very weak system on the 27th that moves through quickly with light QPF.. that would be snow.. it's the next big system quickly on it's heels.. first a warm front and then a cold front.. The airmass warms quite dramatically from the 27th to the 28th

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hey sundog.. sorry.. there is a very weak system on the 27th that moves through quickly with light QPF.. that would be snow.. it's the next big system quickly on it's heels.. first a warm front and then a cold front.. The airmass warms quite dramatically from the 27th to the 28th

Gotcha. I'm sure most of us would take any snow even if followed by a big warmup and rain! :)

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QPF ranges from about 0.02-0.05" over NYC to around 0.10" over CT and interior SE NY. QPF is available on the ECMWF site today (note that it has QPF in millimeters - you need to divide by 25.4 to get inches).

http://www.ecmwf.int/samples/d/inspect/catalog/samplers/banner/mean_sea_level_pressure_and_24h_cumulated_precipitations!96!North%20America!msl!pop!od!oper!w_mslrain!2011022312!!/

12z euro from ewall...Can someone with euro access give us details? Thanks:

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For the system next week, what is preventing that energy from digging more southward towards the gulf? Is it the SE ridge? It seems like that S/W energy is very strong and might be enough to nudge the ridge axis eastward.

the low pressure located off the coast of British Columbia doesn't help out. It supresses the heights and doesn't allow a ridge to bump up out west and that, in turn, does not allow for any additional amplification down stream.

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