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Plains/Intermountain West November 4/6 Possible Winter Storm


prinsburg_wx

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Might be a little early to start a thread on a possible storm threat being a week out but the models have been consistent the last few days of showing a trough in the west & more storm development...The 12z 20111029 models are progging a big storm around the nov 5/6 time frame followed by more cold.

Would like to hear what METS & others think on the possible pattern change and storm threat.

GFS, ECMWF & CMC all have a storm late next week.

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It has my attention. In fact I will be visiting in MN right during this time. That said, while the consistency is good regarding a significant trough and dump of arctic air, any storm threats are still a bit out to get too excited. That said, it has my attention :)

I should have waited a few more runs before starting the thread but i was excited when i seen that thing on most of the 12z models today...lol, oh well.

Most of MN had alot of snow before you moved to NE last winter so hope you can bring it back when you visit next week. :)

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I should have waited a few more runs before starting the thread but i was excited when i seen that thing on most of the 12z models today...lol, oh well.

Most of MN had alot of snow before you moved to NE last winter so hope you can bring it back when you visit next week. :)

My gosh, 0Z GFS just had a dream run.

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I hope you don't sees severe weather :(

Twisterdata GFS maps are down :(

I hate to say it, but with that kind of trough, svr wx would be likely.

Yeah, they have been down since the 174 hr run of the 12z GFS this morning. I'd like to see what some of the hodos look like off this thing...

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I hate to say it, but with that kind of trough, svr wx would be likely.

Yeah, they have been down since the 174 hr run of the 12z GFS this morning. I'd like to see what some of the hodos look like off this thing...

yeah that looks... not good. Hopefully it will be linearly forced if anything.

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yeah that looks... not good. Hopefully it will be linearly forced if anything.

One thing that could limit tornado output is the closed low at H5 being rather close in proximity to the warm sector, which could create shear profiles unfavorable for sustained discrete supercellular convection. We saw something similar to this on April 14th of this year (although that still was a significant outbreak) and, to a lesser extent, May 24th (particularly in Kansas).

But that's not to discount these parameters that the models are showing, because that would truly be a very likely severe weather threat with all facets possible if something close to these verbatims came into fruition (We've seen it several times this year what can happen with mid level jets of this intensity punching into an even modestly buoyant warm sector).

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haha i did a quick blog post on the GFS run earlier before seeing this...called it a run for the ages.

Link to your blog?

The cold plunge is impressive, but we will have to wait and see what kind of shape the ejecting wave is in. That day 3-4 cutoff low heading towards the EC will also have an influence on the low level moisture transport from the GOM...which will significantly influence the moist latent heat release potential/intensification. I think most of the differences between the EC/GFS intensification differences revolve around the drier low levels in the EC (resulting from the poorer moisture advection in the ECM). Still a long ways out, but the teleconnection patterns are pretty conducive to a potential significant event.

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