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Potential winter threats


tombo82685

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Dont forget what DT said last night about the euro run...No surface reflection but upper levels supported it..

The 500 looks similar in pattern but without a stronger vort the capturing doesn't take place...there's a 12 dm difference in the 500 vort height between 0z and 12z...the stronger vort on the 12z is giving you a bomb...the 0z is weaker, thus a weaker solution.

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850's are offshore the entire storm, with the surface freezing line through NYC, just east of Trenton, to east of Philly the entire storm. The only areas above freezing would be the eastern half of central and southern NJ, south of a line from east of Philly and Trenton, to NYC, but again 850's below freezing the entire storm, and with precip showing liquid equivalent of 1.25-1.50 roughly.

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Yep, very interesting, that is for sure. You could just see this coming with that stronger energy moving through the four corners area and then along the Gulf Coast. Hope it is true. We have the Euro on our side though!

174 hours is the most unbelievable panel I have seen since either Feb of last winter or February 2006 and I say that with absolute certainty.

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Man..the 12z CMC isn't too far off either. There's something to be said for the tremendous potential with this vortex sitting in southeast Canada. A few days ago, Isotherm and I were chatting about how the MECS potential would arrive should the vortex become more elongated west to east with the active Pacific Jet. Well, look what we have here...the entire vortex shifts more west to east (confluent flow to our north) in the first link below. There's the pacific jet energy over the Southwest states. By the second and third frame, you can see the phase occurring, all of this made possible by the tremendous Greenland Block which the Euro weeklies had pegged for (no pun intended) weeks. Interesting week coming along, I say get your sleep while you can..

http://www.meteo.psu.edu/~gadomski/ECMWF_12z/f120.gif

http://www.meteo.psu.edu/~gadomski/ECMWF_12z/f144.gif

http://www.meteo.psu.edu/~gadomski/ECMWF_12z/f168.gif

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Earthlight,

As always, fantastic analysis. Thank you.

Man..the 12z CMC isn't too far off either. There's something to be said for the tremendous potential with this vortex sitting in southeast Canada. A few days ago, Isotherm and I were chatting about how the MECS potential would arrive should the vortex become more elongated west to east with the active Pacific Jet. Well, look what we have here...the entire vortex shifts more west to east (confluent flow to our north) in the first link below. There's the pacific jet energy over the Southwest states. By the second and third frame, you can see the phase occurring, all of this made possible by the tremendous Greenland Block which the Euro weeklies had pegged for (no pun intended) weeks. Interesting week coming along, I say get your sleep while you can..

http://www.meteo.psu...WF_12z/f120.gif

http://www.meteo.psu...WF_12z/f144.gif

http://www.meteo.psu...WF_12z/f168.gif

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hr 174 sub 976 coming ashore eastern li...hvy precip phl to nyc frz line goes right through nyc then just east of phl...850s off shore

Tom, as always thanks for the updates. Amazing to see the rapid deepening that can occur with this type of robust cyclone development. I don't think this is the final solution--but it is certainly amazing to loop through the images both aloft and at the surface and see the amazing potential. Whenever there is a big polar vortex over southeast Canada that is elongated like that, within an active flow aloft, it's game on..especially with the type of blocking we have in place at the time.

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Man..the 12z CMC isn't too far off either. There's something to be said for the tremendous potential with this vortex sitting in southeast Canada. A few days ago, Isotherm and I were chatting about how the MECS potential would arrive should the vortex become more elongated west to east with the active Pacific Jet. Well, look what we have here...the entire vortex shifts more west to east (confluent flow to our north) in the first link below. There's the pacific jet energy over the Southwest states. By the second and third frame, you can see the phase occurring, all of this made possible by the tremendous Greenland Block which the Euro weeklies had pegged for (no pun intended) weeks. Interesting week coming along, I say get your sleep while you can..

http://www.meteo.psu...WF_12z/f120.gif

http://www.meteo.psu...WF_12z/f144.gif

http://www.meteo.psu...WF_12z/f168.gif

Yep, should be an interesting week ahead John. I'm trying to keep my expectations tempered but I'd say it's time to get a little excited based upon the teleconnectors we have in place...it's not like this is a fantasy solution with a terrible pattern. As Don Sutherland posted the other day, retrograding, historic blocks like the one progged almost always produce some kind of event underneath the block. Details will change with each run (surface) but as long as the key features are in place, the N Canadian block, the PV over sern Canada, which will help pump heights along the SE US coast, etc, we're good to go.

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Ji,

You know this is going to happen because you just got finished saying this is the 4th worst winter you have ever seen. We better all get ready for a blizzard. Also, my neighbors have had a snowstorm when they have their Christmas party several years in a row now, and they are having their Christmas party next Saturday night. The big storm will commence next Saturday night based on all this.

Jma had this yesterday

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