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Feb. 19th-22nd Winter Storm Part 2


wisconsinwx

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What are we looking at for maximum snowfall potential across SD, MN, and WI? The high end of the range from any statements I've read so far is 14". Are many 15-20"...or more amounts likely? Right now my forecast is showing 8-12" through Sunday afternoon with no amounts predicted yet for Sunday night.

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DT used to be big on not using the Euro inside 72 hours, no? Regardless, it's statistically proven that the model is superior with QPF inside 48 and 24 hours. Comments to the contrary are wrong and dumb.

Yeah statistically it is. Every storm is different though. Euro has had some high profile busts on big storms this winter within 48. I know you know--but all models do have their issues and they have to be used considering the height field setup, dynamics, known bias if any, etc.

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Yeah statistically it is. Every storm is different though. Euro has had some high profile busts on big storms this winter within 48. I know you know--but all models do have their issues and they have to be used considering the height field setup, dynamics, known bias if any, etc.

Sure and agreed. Euro was awful with a couple of the hybrid clippers of this past December in MBY...until it caught on 24 or so hours out from the event. Regardless, baseless claims made that it is "the worst" from 48 hours and in are just not correct. Alas, may we move on from this and get back to the storm at hand. Nice event for some upcoming. :)

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Sure and agreed. Euro was awful with a couple of the hybrid clippers of this past December in MBY...until it caught on 24 or so hours out from the event. Regardless, baseless claims made that it is "the worst" from 48 hours and in are just not correct. Alas, may we move on from this and get back to the storm at hand. Nice event for some upcoming. :)

I didn't see those comments regarding it being the worst. Yeah that is silly.

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Very intense frontogenesis-driven lead band. Also some very weak (negative) vorticity overhead at the same time, suggesting that there's some potential for CSI or even a bit of upright instability. There's likely to be a very intense ageostrophic circulation with it, especially since we're also going to be dealing with melting and evaporational cooling, which will help drive it further. Would not be surprised to see a burst of very heavy snow with some embedded thunder for about a 3 hour period tomorrow morning over any one area that gets into the band. After that, areas in Southern Wisconsin and far N. IL will probably see some significant ice. Problem there too will be fresh snowcover that may end up holding temps at or below freezing and setting up a prolonged period of FZRA/FZDZ.

I am really rooting for the thundersnow here too. The coupling aloft with the front and height falls associated with the extreme ascent in the mid levels looks good for both elevated and potential slantwise convection. I am pretty excited. It has been years since I have heard TSSN.

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Is this looking like a rain event for Chicago city south? I'm sure the Skilldog from WGN is having heart palpatations since he can never get enough snow.

Chicago metro is right in the transition zone. Expect more snow/mix the farther north you go but eventually transitioning to plain rain.

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With any luck the low will track to MN and the UP of MI. I'll take a nice warmer day over a cold rain or ice anytime. If it is not gonna snow then lets get this thing as far north as possible.

Maybe we can get a boomer.

This!

NAM going one step closer to hardly any snow and then hopefully we dry slut it out.

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