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Kirk Mellish's Weather Commentary

Posted: 11:38 a.m. Wednesday, Feb. 9, 2011

love the net, hate the net 

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By Kirk Mellish

They seem to have fixed the last bug keeping my web access limited.

As I've been saying over the week this looked like a weak storm system not a major winter storm, and with the exception of the Canadian, sometimes the UK and Warf, most models seem to agree.

This is not a typical snow scenario for Georgia, even though there is plenty of cold air available. The problem is the surface low pressure is multiple instead of just one, and they are weak. Also the track is a little far to the South and then East to be optimal.

Above all, if modeling is right, the system is not deepening as it heads our way. In fact the  upper energy is projected to weaken or dampen out. The energy gets strung out and does not show much of a negative tilt as the upper trough flow remains in a broad troff configuration. The best dynamics aloft and the best or deepest moisture are for most of the region disconnected, certainly not ideally juxtaposed. This is why what is a big snow storm for states west of us, its fizzles in the Southeastern U.S.

These are the reasons I have not been giving out a specific guideline for where the heaviest or lightest will occur, as the chances are almost even across the Northern half to two-thirds of the state. Legitimate arguments available for the heaviest to be in the mountains and far NW Suburbs, and legitimate arguments for the heavier amounts to be near the AL line and far south suburbs. Either way it looks like minor amounts will be the more common and substantial amounts not. So the media coverage will be deeper than the snow. IF you get an inch or more consider yourself lucky. (or cursed if you hate it)

Bottom line is, that unless I am really missing something, widespread significant snow accumulation is not expected. In many areas, after the rain changes over there may be more snow in the sky falling from the clouds than on the ground. This would mean for most of us this ranges from curiosity--nuisance snow to minor inconvenience snow. There can always be surprises in southern snow systems that will make some people happy and others unhappy with the surprise that plays out. That's just life.

The discombobulated nature of this system is why the models continue to struggle to give us guidance even at this late hour. It's a sign we should have low confidence in any specifics in the forecast. One thing that occurs to me in our forecasting such modest light amounts, is that the highest range is only 3 inches. But with the normal expected and unavoidable margin of error that means just a dusting or zero on the ground can not be ruled out. 

One way or the other, if our temp forecast is on track we still will have to watch for some slick spots especially bridges and overpasses tomorrow morning. The good thing is that with the timing, by the time the alarm clock goes off for work and school tomorrow, we will know what's what and won't have to wait any longer. Also, with the moderate temps to follow and the big warming trend and sun coming after this weak weather system, there will be no repeat of the week with travel troubles we had with the real snowstorm last month.

Also the long-advertised thaw is still on schedule starting late this weekend and for next week, it would not surprise me if we saw 70 before the month is done. That does not mean there can be no more cold snaps or snow scares but the odds really go down and it looks like the worst of winter will be behind us, or best of winter depending on your view.

Listen for updates on the radio in the newscast.