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March 24-25 Winter Storm Threat


Mitchel Volk

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I hate to say it, but it's NAM or bust. The GFS would have a difficult time laying down accumulating snow. If you aren't under the CCB, it's a pretty light to moderate snow that accumulates on some grassy surfaces.

Nam,SREF,GGEM. I don't get why the GFS is so warm. It looked good and then went to crap.

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I hate to say it, but it's NAM or bust. The GFS would have a difficult time laying down accumulating snow. If you aren't under the CCB, it's a pretty light to moderate snow that accumulates on some grassy surfaces.

 

gfs made some pretty nice improvements at h5 up until 54hr...its handling the redevelopment slower and thus shunting the cbb just offshore but not by much. trends are important here, not what its actually printing out during a single run.

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Just keep in mind that the same debacle happened at least twice this year where you had the NAP 50-100 miles further west than the GFS. GFS won both times and it made a huge difference in outcome.

 

It's not just the Nam though.The GFS went towards the GGEM and Nam on the 0z run. Just a little more west and this would have been a good run.

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There are many reasons why it's so hard to get accumulating snow past mid March, this storm has to be a huge hit like the Nam for us to have a chance.

Just think about this, as historical as the late October snow was, it was more likely to accumulate even with moderate snow rates than it would be right now where the sun is equivalent to say September 20.

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In the end the equation is simple In march & april elevation, Precp intensity & accordingly CCB location is everything. In the last overperformer it accumilated with temps at 35 (to start) bec of 2in hr/ rates. If we get Nam solution then no worries. we can lose .5 an inch and still finish with a solid foot!

There are many reasons why it's so hard to get accumulating snow past mid March, this storm has to be a huge hit like the Nam for us to have a chance.

Just think about this, as historical as the late October snow was, it was more likely to accumulate even with moderate snow rates than it would be right now where the sun is equivalent to say September 20.

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Just keep in mind that the same debacle happened at least twice this year where you had the NAP 50-100 miles further west than the GFS. GFS won both times and it made a huge difference in outcome.

 

 

Yeah GFS turned ugly at the end...but it did have some pretty good trends in the first 42-48 hours of the run. If that ULL takes a track similar, I would have to think someone will see pretty good snow underneath that.

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There are many reasons why it's so hard to get accumulating snow past mid March, this storm has to be a huge hit like the Nam for us to have a chance.

Just think about this, as historical as the late October snow was, it was more likely to accumulate even with moderate snow rates than it would be right now where the sun is equivalent to say September 20.

true with regard to sun angle, but there are many other factors that make accumulating snow late in march much more likely than october, water temps, etc

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The GFS is often too warm with sfc temps, but that said you need an almost perfect scenario to accumulate a lot of snow during the day in late March. The Canadian 12z and NAM likely do it, but light or moderate stuff spread over 18 hours probably won't do it. Again, we need a move by the Euro to a better outcome. A brush is the same thing as rain.

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