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March 7th-9th Potential Storm


wisconsinwx

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Wisconsinwx do you only base a successfil storm off of how you do compared to someone else's location? This is a rather weak storm no matter where you are for the most part.

Well let's just say I'm a lot happier when I don't feel like we just missed a storm. I didn't expect to get more than an inch or two, so 3-4 inches in a storm that has weakened considerably is pretty decent.

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Weaker and colder storm than last night. Will start as rain this evening no doubt from the warm PBL today, and the warm conveyor will start kicking in too. Overnight there's the potential for the lowest 1,000 feet of the atmosphere to cool to just below freezing, so it'll probably start mixing after midnight. Cold front then comes in around sunrise and it snows all day Wednesday, but of course the springtime PBL might make things less conducive than they look initially.

I'd say 4-5" is a good call for Madison at this point, with another inch of assorted wintry precip.

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Didn't you have an epic February?

Oh, I was referring to this storm. Model run after model run as shown this warm tongue come up through southern Michigan.

I am also learning that the common tracks of lows through this area consistently put this area right on the edge...most of the winter we were on the northern edge (last winter too) and then in December and so far in March we've been on the southern edge. Just doesn't seem like the lows like to move so that we are comfortably in the "safe zone" without worrying about mixtures or being missed. I am interested in what we would average if we didn't get lake effect snow.

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Oh, I was referring to this storm. Model run after model run as shown this warm tongue come up through southern Michigan.

I am also learning that the common tracks of lows through this area consistently put this area right on the edge...most of the winter we were on the northern edge (last winter too) and then in December and so far in March we've been on the southern edge. Just doesn't seem like the lows like to move so that we are comfortably in the "safe zone" without worrying about mixtures or being missed. I am interested in what we would average if we didn't get lake effect snow.

Sounds like over here, except without the lake effect. So you'd probably average a relatively paltry 50".

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12z UKIE gives SE MI a shot of defo band Thursday night. Unlike the GEM, looks like it'd be cold enough for snow.

Euro looks like it might clip us. Looks like a repeat of the last storm with the secondary going a bit further west and a bit quicker. Seems like a complex setup to me. The better we do with this one, I think the worse we will with the clipper because if this secondary hangs around it wont it shear out the clipper or force it away from this region? If the low did move out then the clipper would probably head north. Can't have it all I guess.

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Oh, I was referring to this storm. Model run after model run as shown this warm tongue come up through southern Michigan.

I am also learning that the common tracks of lows through this area consistently put this area right on the edge...most of the winter we were on the northern edge (last winter too) and then in December and so far in March we've been on the southern edge. Just doesn't seem like the lows like to move so that we are comfortably in the "safe zone" without worrying about mixtures or being missed. I am interested in what we would average if we didn't get lake effect snow.

There are places in southern WI (away from Lake Michigan) that only average about 35" of snowfall per season.

See the attached map for more details:

http://www.crh.noaa.gov/mkx/climate/wisnow.gif

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Some of the big storms this year were? Assuming closed low? Need to learn the differences.

Cutoff lows are completely removed from the upper level steering winds. They're closed, and are stationary or tend to wander aimlessly. Was trying to find a good example. Not sure if this is it:

http://www.meteo.psu.edu/~gadomski/NARR/2010/us0313.php

Notice how that gyre in the OV just sits and spins while the main belt of westerlies flow around that trough in the Pac NW and then shoot up into Canada. That's at least a close approximation of a cutoff low.

A closed low is simply a closed H5 center, but is still incorporated into the broader jet stream pattern. They're more typical.

Jan 2-3, 1999. Closed but not cutoff.

http://www.meteo.psu.edu/~gadomski/NARR/1999/us0103.php

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I find it somewhat interesting that every 12z ensemble member on e-Wall brings "measurable" snow to IN at 48 hours, but the OP GFS is "weaker". Granted it's still marginal with surface temps, but I'm desperate to get another 1.1" of snow. :lol:

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