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Central PA Late January thread


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Euro doesn't seem all that bad. Looks like about 1.3" QPF in Altoona. I didn't expect another run of 2"+.

yeah i know what you mean, but one can dream lol. Whats your opinion on the GFS, I agree with MAG its to progressive and doesn't phase well. As long as I can get a WSW out of this I will be happy, havent seen one of those this year :snowman:

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Would either of you red-tags(or anybody) care to weigh in on this.... but it seems like as the axis of heaviest precip rotates around this storm, we will probably see highest snowfall totals relatively close to areas that see a changeover, would you agree? Should make for another interesting forecast, but better than the storm/no storm kind.

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Well, I mean I dunno if taking steps toward the GFS is necessarily the path to redemption to begin with haha. The GFS to me is unphased and too progressive and it runs the 500 low straight out way before that energy dives out of Canada. The 0z GGEM looks similar to the 12z to me. The only thing that may constitute a "shift" to the GFS is that the GGEM doesn't dig the shortwave as far south as it did at 12z. But since its not a day and a half faster than everything else it still phases with the vort coming out of Canada and ends up with pretty much the same storm track. I think the folks along and east of the 95 corridor are going to want the progressive GFS to come to fruition because if this evolves like the other models have it I just don't see how the storm tracks in a manner that doesn't give them mixing issues at some point in the storm given the pattern. That's my take anyways, i'd love to hear one of the other mets opinions in here to maybe help elaborate or critique what I said.

I pretty much agree with everything you have here. I don't see I-95 getting a big storm from a coastal storm in a situation like this -- if there is a storm moving up the coast, it should try to come inland more than recent storms.

The main difference in the GFS the past three runs is that it's not digging the shortwave very far south. Taking a look at the 00z NAM and GFS, there is a huge difference in the positions of the shortwaves.

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yeah i know what you mean, but one can dream lol. Whats your opinion on the GFS, I agree with MAG its to progressive and doesn't phase well. As long as I can get a WSW out of this I will be happy, havent seen one of those this year :snowman:

I won't say the GFS is nuts -- the 00z run actually depicts a pretty common Alberta Clipper transferring energy to a coastal storm.

That being said, I believe the upper-air pattern favors the rest of the model world that has the stronger storm. Given how far north and how strong the western ridge is, the shortwave coming down from Canada should want to dig that trough pretty far south, so I would definitely lean towards that solution at the moment. That doesn't guarantee us a major snowstorm (things can still go wrong with that evolution too), but it gets us in the right direction.

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per tombo unv 1.75" - 2.0"

UNV is around 1.3". It has 2.5" in MDT, but that is probably not all snow. That brings up a point about the 00z Canadian & Euro. The slight shift east is actually better for most because mixing could be a big issue with this storm, and the new tracks on those models are a bit more favorable for snow.

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UNV is around 1.3". It has 2.5" in MDT, but that is probably not all snow. That brings up a point about the 00z Canadian & Euro. The slight shift east is actually better for most because mixing could be a big issue with this storm, but the new tracks on those models are a bit more favorable for snow.

if unv is 1.3" id assume clearfield would be under 1"

prob .6 - .8" ?

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if unv is 1.3" id assume clearfield would be under 1"

prob .6 - .8" ?

You're pretty good -- Clearfield comes in at around 0.75" on this run.

As for Hazleton, QPF is around 2.5" (at AVP), but some of the low & mid-level temps are pushing it. With the close call in the mid-levels and surface temps dancing around freezing, I would expect at least a brief mix with sleet and/or rain for a time.

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You're pretty good -- Clearfield comes in at around 0.75" on this run.

As for Hazleton, QPF is around 2.5" (at AVP), but some of the low & mid-level temps are pushing it. With the close call in the mid-levels and surface temps dancing around freezing, I would expect at least a brief mix with sleet and/or rain for a time.

KHGR?

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I just posted for the folks over in the pgh thread, it goes from approx 0.8 or so at JST to 0.4-0.5" at Latrobe and 0.1" or less at PIT. The brutal sharp cutoff is rearing its head again the last couple runs of the Euro.

It makes more since. When does a low near the east coast give pitt 2" qpf ever? lol

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You're pretty good -- Clearfield comes in at around 0.75" on this run.

As for Hazleton, QPF is around 2.5" (at AVP), but some of the low & mid-level temps are pushing it. With the close call in the mid-levels and surface temps dancing around freezing, I would expect at least a brief mix with sleet and/or rain for a time.

thanks

yeah i figured it would be in that range given the track.

too far east this run for me to get the BIG snow but would still be a good storm (6-10") if it holds serve.

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Area forecast discussion

National Weather Service State College PA

626 am EST Sat Jan 22 2011

"The main focus for the second half of the period is on a

potential major East Coast winter storm system that could

adversely impact the area by the middle of next week. A moderate

spread in the timing of the East Coast cyclone exists between the

GFS and Canadian Gem/ECMWF...with the GFS on the faster edge of

the solution envelope. The GFS more offshore development is

countered by a westward trend/shift of the gefs mean cyclone

track...combined with the further west solutions of the Canadian

global and UKMET. The last two runs of the European model (ecmwf) are rock solid in

a storm track over the mouth of the Chesapeake that would likely

result in heavy snows over much of central PA. The ec timing

compares very well to the non-NCEP guidance but is slightly east

of the UKMET/Gem global consensus. The European model (ecmwf) and its ensemble mean

are in very good agreement with a low center near the Virginia Tidewater

at f120 and near Cape Cod at f144. Putting the typical

uncertainties aside at this range...this system bears watching in

the coming days as it has some of the classic attributes/anomalies

that are usually associated with major East Coast storms. Overall

the models seem to be in reasonable agreement that there will be a

storm system...but of course the details and exact track will

need to be resolved. For now will mention 35-45 percent high chance probability of precipitation.

Temperatures will remain below normal. "

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I thought it looked a tad east of what it was showing, maybe its just me, It still gives us hope, you guys know what time the Euro comes out?

It was the initial impression they had over in the PHL/NYC thread.

Yeah, it was a tad east, but the main issue is that damn PHL/NYC thread. As you said, PSU, in a later post here, that thread is a disaster and it can be hard to figure out what is going on. That sucks.

-4.2 here, in other news.

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Yeah, it was a tad east, but the main issue is that damn PHL/NYC thread. As you said, PSU, in a later post here, that thread is a disaster and it can be hard to figure out what is going on. That sucks.

-4.2 here, in other news.

It's awful. I quit trying to catch up in it.

The 0z models didn't do much to change my ideas right now. At least the eastern part of this thread has a really good chance of major snows.

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You mean flim-flamming?

Just hit -0.4 in Toftrees.

No.....from Webster's:

Fim-famming (fim-fam-ming), n.

1. Being fooled by the computer forecast model the FIM, which is a lesser-known model.

2. Unintentionally fooling people on an early Saturday morning into thinking you misspelled but really was making a really crappy play on words joke.

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