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Feb 8-10 Light snow event that i spent 10 days tracking


Ji

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Can't wait for the 00z clipper....6z Chicago cutter...12z southern slider next

If somehow on AmericanWX I could favorite a post. JI. Maybe you should post that on Twitter. I'll hook you up. LOL. Yeah. Happy hour on the train to NYC. Good times. Anyway. Love the latest trend that will change 15 more times. ;)

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I think we are going to get there 

 

The stratospheric PV split and epic anticyclonic wave break in the North Pacific make this the best East Canadian/NAO setup so far this year. In December, we came very close to this same thing happening but the strat wasn't as hospitable as it is now. It still led to a winter storm though.

 

Good expectations so far in this thread.

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The stratospheric PV split and epic anticyclonic wave break in the North Pacific make this the best East Canadian/NAO setup so far this year. In December, we came very close to this same thing happening but the strat wasn't as hospitable as it is now. It still led to a winter storm though.

 

Good expectations so far in this thread.

well that's a mistake I'll have to correct!

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Agree with everyone else's thinking that the first shortwave cannot be in a better spot for a HECS if it can amplify.  It actually resembles the setup last February 8th where models were unable to key in on the southern stream until very late in the game. This time H5 would be able to close off much further south and hit us with decent snow, not just New England.  

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Agree with everyone else's thinking that the first shortwave cannot be in a better spot for a HECS if it can amplify.  It actually resembles the setup last February 8th where models were unable to key in on the southern stream until very late in the game. This time H5 would be able to close off much further south and hit us with decent snow, not just New England.  

 

hehe...nobody thinks we are getting a HECS...we'd be lucky to get a 3-6" storm...the chances of complete fail are I would say 100 times better than chances of a HECS

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I'm not extrapolating...I get 0.6" with a light snow appetizer on saturday....probably more like 6-8" for DC - Balt all snow...hook it up

It's a nice run but doesn't change much.  It's nice that it is sort of like the euro but wetter with the second wave.  I think that might make sense but I also could still see it amplifying and leaving you and I in a not so great place.  Still it's way better than seeing the GSF has a OH valley or Lakes storm.  If we can hold the confluence up to our north, we could do well.  At least today there wwas one nice analog. 

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hehe...nobody thinks we are getting a HECS...we'd be lucky to get a 3-6" storm...the chances of complete fail are I would say 100 times better than chances of a HECS

I understand your pessimism living so close to DCA.  Today's model runs have the look that many other HECSs have had 3 days out So I think there's a decent chance for one from Wilmington north. The Polar shortwave may wreck our chances, but if it can stay out of the way long enough, even DC will be in.

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Ninja'd. About to say the same thing. 18z GEFS look MILES better than 12z. Pretty good support for the Op.

And the few amped ones that do take a west track are becoming unlikely solutions. Not impossible of course but unlikely given the height patterns in front.

If you look at the 18z as a whole, the biggest worry is the trailing vort tracking overhead. That wouldn't end well but philly would add to their pretty epic year.

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18z finally shows a midatl storm and screws the NE. Book it. 

 

 

Here are the current odds I give this system in my totally subjective estimation based on my previous tracking experiences and flipping through KU.

 

MA Special    ~ 2/17/1979:  20%

Inland runner ~ 2/142007:  30%

NYC North  ~  2/8/1969:     30%

HECS          ~  3/4/1960:    30%

Out to sea    ~  CMC 12z  -10%   

ARW Cleveland  Superbomb: 0%

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I understand your pessimism living so close to DCA.  Today's model runs have the look that many other HECSs have had 3 days out So I think there's a decent chance for one from Wilmington north. The Polar shortwave may wreck our chances, but if it can stay out of the way long enough, even DC will be in.

well yeah, 40N can get a HECS when someone sneezes...I was talking about for DC metro

 

2 of the bigger features concern me for a major storm to work....

 

1) the trough over the Maritimes is transient and not particularly robust, so we need more timing than we ideally want

 

2) there is no trough off the NW and ridge to its northeast.. ...we get some stream separation but it isn't the split flow/+PNA we want...the flow is more uniform, so we need to rely on the west based ridging  to force anything south...which it does....but the 12z GFS scenario is believable, where the initial phase is a complete whiff...I mean why does the ULL have to phase?  I'm not saying we will get some Toledo to Erie track...but there is no ostensible reason why it would need to barrel southeastward...How many times in a big storm does our main piece of energy come through the PAC NW?  I'd much rather see something enter the CONUS in Montana or North Dakota and have no choice but to drop southeastward like a 500,000 lb bowling ball

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Here are the current odds I give this system in my totally subjective estimation based on my previous tracking experiences and flipping through KU.

MA Special ~ 2/17/1979: 20%

Inland runner ~ 2/142007: 30%

NYC North ~ 2/8/1969: 30%

HECS ~ 3/4/1960: 30%

Out to sea ~ CMC 12z -10%

ARW Cleveland Superbomb: 0%

120% odds I see...

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