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11/7 Noreaster Thread


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tombo to be fair I'd wait to get a sounding from the NAM until the it brings the strong uvvs overhead. I'm telling you, it's going to snow, will it accumulate? idk, but I'm honestly starting to think it might happen lol

ala the GFS, GFS brings some nice frontogenesis in the region, cant wait for soundings. Going to be a snow/slop fest imo

Brett, the 12z gfs is a heck of a lot colder, probably cause of the deform band. My question to you is though, does it really matter if it snows but doesn't accumulate? Thats like saying the eagles put up 600 yds of total offense but lost the game. I said before i could see snow in phl but i dint see accumulations. I think you need to get 15 or 20 miles away from the city with some elev.

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Anywhere i can find the maps for the 0ct snowstorm last y? I tried NARR but its not loading. I just wanted to see what the 850 temps with that storm were. Cause if you remember it all came down to that deform band to, and that storm had more cold air to work with i believe. That deform band changed philly over to sleet and snow, but they managed .6 which was majority sleet.

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Anywhere i can find the maps for the 0ct snowstorm last y? I tried NARR but its not loading. I just wanted to see what the 850 temps with that storm were. Cause if you remember it all came down to that deform band to, and that storm had more cold air to work with i believe. That deform band changed philly over to sleet and snow, but they managed .6 which was majority sleet.

Ahem

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I agree with Tombo. I can see frozen precip falling from the sky in PHL but I can't envision that it can accumulate on the ground (outsied of a 1/4" of slop) especially if it falls during the daytime. I would think given climo we would need the column too cool below freezing even moreso b/c of the elevated ground temps we currently have given it's November and we haven't seen even one hard freeze yet. Like last October elevation will be key if you want to pick up a shovel. However given the strange weather phenomena we have experienced over the recent years in this area nothing would surprise me.

***** I just wanted to note that I have been lurking and read nearly everything during Sandy in the PHL/NYC/NE threads and I have to compliment the posters here, they are hands down the best. The posts are relevant, informative and highly on topic here and everyone is to be commended.

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Your site is great BTW.

Thanks :)

Anyway, 850 temps were just shy of 0C through that storm at PHL. They surged a bit warmer right at 18Z (when some areas which had mixed turned over to rain again and some places that had gone to snow mixed with sleet, like TTN).

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Since am19psu coined this the "Highzenberg" storm I decided to make a first guess. Obviously it's not perfect, I suck at photoshop. This is my early opinion on where the deform sets up. The map up towards NY & SNE is probably wrong, I'm focused mainly on our area and west-southwest. If this isn't allowed on the forum I have no problem with you guys deleting it. I don't see JBs map verifying at all because I don't think the precip shield will advance that far. Plus I really feel you'll need to be under the heaviest precip to get snow. I guess the snow could extend eastward into C NJ but for now I think this is a good compromise between the EURO, GGEM, & GFS.

Please make note of the extreme detail that went into this wink.png. I'm new to the forum so if this isn't allowed I apologize.

post-8091-0-95336200-1352137299_thumb.jp

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I agree with Tombo. I can see frozen precip falling from the sky in PHL but I can't envision that it can accumulate on the ground (outsied of a 1/4" of slop) especially if it falls during the daytime. I would think given climo we would need the column too cool below freezing even moreso b/c of the elevated ground temps we currently have given it's November and we haven't seen even one hard freeze yet. Like last October elevation will be key if you want to pick up a shovel. However given the strange weather phenomena we have experienced over the recent years in this area nothing would surprise me.

***** I just wanted to note that I have been lurking and read nearly everything during Sandy in the PHL/NYC/NE threads and I have to compliment the posters here, they are hands down the best. The posts are relevant, informative and highly on topic here and everyone is to be commended.

I *can* envision an accumulation at PHL, but I wouldn't call it likely. Not yet. Somewhere it will happen.

Daytime doesn't matter much this time of year, remember the sun angle is about as strong as early February.

Most of the burbs did have a hard freeze. PHL is the anomaly (unlike last year's October storm where most places didn't freeze until during or after the snow).

Elevation was only partly key to last October. The other part was, as with this one, mid level warming. From PHL S and E it was just too warm at the midlevels for much snow to fall last October. This time may be a bit different.

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I *can* envision an accumulation at PHL, but I wouldn't call it likely. Not yet. Somewhere it will happen.

Daytime doesn't matter much this time of year, remember the sun angle is about as strong as early February.

Most of the burbs did have a hard freeze. PHL is the anomaly (unlike last year's October storm where most places didn't freeze until during or after the snow).

Elevation was only partly key to last October. The other part was, as with this one, mid level warming. From PHL S and E it was just too warm at the midlevels for much snow to fall last October. This time may be a bit different.

Maybe, but I would think it's less likley than more. I hope I am surprised, but I am holding off my "inner weenie" from taking hold. I am also speaking generally PHL (city, south and east) in terms of where I find it higly unlikely to see any accums.

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Since am19psu coined this the "Highzenberg" storm I decided to make a first guess. Obviously it's not perfect, I suck at photoshop. This is my early opinion on where the deform sets up. The map up towards NY & SNE is probably wrong, I'm focused mainly on our area and west-southwest. If this isn't allowed on the forum I have no problem with you guys deleting it. I don't see JBs map verifying at all because I don't think the precip shield will advance that far. Plus I really feel you'll need to be under the heaviest precip to get snow. I guess the snow could extend eastward into C NJ but for now I think this is a good compromise between the EURO, GGEM, & GFS.

Please make note of the extreme detail that went into this wink.png. I'm new to the forum so if this isn't allowed I apologize.

post-8091-0-95336200-1352137299_thumb.jp

Looks good, but the purple, 4-8 may fall out of the sky but won't stick. Maybe an inch or two on the grass.

I remember with the October storm last year, Bethlehem pa, which I believe is somewhere around 300 ' elevation, had 6" of snow that was mainly on the grass, granted it still wrecked property.

I'm I'm schnecksville pa, roughly 700' elevation, I had a foot of snow and as soon as the snow started dumping it stuck to every surface.

I'm not saying that's how it'll set up. But even though the jackpot zones may have heavy snow and more frozen qpf falling from the sky, the higher elevated locations even with less qpf will see the accumulations

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Maybe, but I would think it's less likley than more. I hope I am surprised, but I am holding off my "inner weenie" from taking hold. I am also speaking generally PHL (city, south and east) in terms of where I find it higly unlikely to see any accums.

Just FYI, this is the kind of thinking that fooled almost everyone (mets included) into not expecting any significant snow on the coastal plain on 4/9/1996. Then the deformation band set up WWD to BLM and ACY had 8".

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Looks good, but the purple, 4-8 may fall out of the sky but won't stick. Maybe an inch or two on the grass.

I remember with the October storm last year, Bethlehem pa, which I believe is somewhere around 300 ' elevation, had 6" of snow that was mainly on the grass, granted it still wrecked property.

I'm I'm schnecksville pa, roughly 700' elevation, I had a foot of snow and as soon as the snow started dumping it stuck to every surface.

I'm not saying that's how it'll set up. But even though the jackpot zones may have heavy snow and more frozen qpf falling from the sky, the higher elevated locations even with less qpf will see the accumulations

I think the gray area on the east side towards NJ/PA line would be snow that doesn't stick. I think if it starts snowing heavy with the frontogenesis that is showing up on the models it will be coming down too hard for it not to stick.

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I think the gray area on the east side towards NJ/PA line would be snow that doesn't stick. I think if it starts snowing heavy with the frontogenesis that is showing up on the models it will be coming down too hard for it not to stick.

That's the key. Heavy snow. I think it was falling at 1 or 2" an hour last year and that's why It stuck so good

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PHL/ILG 8-12", TTN 6-8" on Euro

I'd imagine those amounts would be cut down until it falls hard enough to stick... Regardless, there is a pretty strong signal now - GFS getting colder with each passing run and the EURO remaining quite consistent with this storm system. Very interesting start to November to say the least.

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