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December 9-11, 2012 (Winter?) Storm


weathergy

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Don't jinx me please, lol, and most importantly, don't tease me. I have no expectations of snow from this storm. Although my area tends to get shafted by dry slots, and mixing issues. It's rare that we get all snow the whole entire storm.

Dryslot is entirely dependent on stormtrack. Very interesting you mention mixing issues. Most storms here have no problem being all snow. If have to look at my data but I would say that a good 80% of snowfalls, say ov er 3" tend to be all snow.

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Dryslot is entirely dependent on stormtrack. Very interesting you mention mixing issues. Most storms here have no problem being all snow. If have to look at my data but I would say that a good 80% of snowfalls, say ov er 3" tend to be all snow.

I know the dry slot is dependent on track, but it seems more often than not, it passes through at least some portion of SEMI. Even DTX makes a mention of a dry slot in their AFD since we're famous for it. :lol:

I could be wrong, but I've noticed this with many storms.

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At least we are tracking something :)....Feels pretty good!

Yea but still a bit confused with this event. If phasing occurs in the southwest, is it likely to track in the plains/western great lakes or will there be something north stunting it, thus a further south track/movement more ENE. If theres something to the north blocking it, does that affect how strong the phasing is or affect the strength of the low? Always wondered if a strongly phased storm can move ENE. Usually see a more NNE movement. My first post this winter. Nice to see everybody and wishing everyone a spread the wealth winter.

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I know the dry slot is dependent on track, but it seems more often than not, it passes through at least some portion of SEMI. Even DTX makes a mention of a dry slot in their AFD since we're famous for it. :lol:

I could be wrong, but I've noticed this with many storms.

Historically, we had quite a few major storms go from heavy snow to rain, but in recent years, I really don't remember such a storm. The few that do changeover tend to be rain TO snow rather than the other way around. Looking at our top 10 snowfalls for 2010-11, the GHD had some sleet the latter portion of the storm, but it didnt really affect the outcome (dryslot did however)....and the Dec 12th storm started as rain but turned to heavy snow....all other storms were all snow. Our top 10 snowfalls for 2011-12 (if you can believe it LOL) were also primarily snow. The Dec 5th snowfall started as rain but turned to snow, and the Feb 23/24 storm ended as light rain, all others were all snow. I chart the top 10 snowfalls each winter and my estimate seems to be pretty good....a good 80% are all snow, and not even 10% are situations where snow ends as rain.

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Yea but still a bit confused with this event. If phasing occurs in the southwest, is it likely to track in the plains/western great lakes or will there be something north stunting it, thus a further south track/movement more ENE. If theres something to the north blocking it, does that affect how strong the phasing is or affect the strength of the low? Always wondered if a strongly phased storm can move ENE. Usually see a more NNE movement. My first post this winter. Nice to see everybody and wishing everyone a spread the wealth winter.

Welcome back aboard!

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And yet again the GFS finds a new way to spin up a system with different issues. I wonder if the system that slams into the GOA ridge around 114/120hr is playing a role in the trof orientation over the plains. It's a good deal further south this run as the 12z run had it further north over/near Alaska.

consistency issues are one of my biggest issues with the GFS right now

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Yea but still a bit confused with this event. If phasing occurs in the southwest, is it likely to track in the plains/western great lakes or will there be something north stunting it, thus a further south track/movement more ENE. If theres something to the north blocking it, does that affect how strong the phasing is or affect the strength of the low? Always wondered if a strongly phased storm can move ENE. Usually see a more NNE movement. My first post this winter. Nice to see everybody and wishing everyone a spread the wealth winter.

The upper level divergence is much stronger in a deeper low pressure along the ridge leading to that motion. Weaker storms aren't as amplified by the jet stream leading to a more easterly flow

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