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January Storm Term Threat Discussions (Day 3 - Day 7)


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Just now, Wentzadelphia said:

The 6z and 00z gfs would have had ptype issues too but  they were just stronger, closed off earlier,  and thus dynamics took over in the ccb much faster 

Almost all of the members that got good snow here were warmish/rainy to start. Not many southern tracks either. Still pretty far out, but it appears this will have to evolve almost perfectly wrt to strength and track. What else is new? 

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13 minutes ago, GEOS5ftw said:

GFS showing my concern from last night about the lingering low up in PA preventing the cold press in the boundary layer. Thus we rely on dynamic cooling which is going to be very dependent on where the bands set up (if this gets within meso range, expect to see colder sfc temps line up with heavier precip). Weaker system means we lose this effect and get rain. Good news I guess is that this is the bias I'd expect the GFS to show at this range and the para looks good. I'd still rather see the progression that Canadian was showing last night - it moved the low out of PA faster and had a better CAD setup ahead of the storm. But it is trending towards the GFS setup at 12Z.

Sounds like an early March Storm 

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Just now, Quasievil said:

My thought exactly, maybe what ultimately get what the EURO is showing but to think it's a lock now is absurd.

Temps are almost always a concern here.  More so this year.  The problem with those weenie runs is setting the expectation bar too high.  

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28 minutes ago, Ji said:

i dont buy that. Spain had a blizzard a few weeks ago. Lebanon/Middle East/UK. Japan had record snow. Lousiana got 9 inches

Anomalies still happen. But almost all the snow to our south...and at our latitude lately, comes from getting lucky with an upper level feature to crash temps.  When was the last time we saw a huge expanse or cold powder to the northeast of a low coming across the US?  If the coverage of snowfall overall in a larger scale decreases the odds of any one spot getting snow goes down.   

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2 minutes ago, psuhoffman said:

Anomalies still happen. But almost all the snow to our south...and at our latitude lately, comes from getting lucky with an upper level feature to crash temps.  When was the last time we saw a huge expanse or cold powder to the northeast of a low coming across the US?  If the coverage of snowfall overall in a larger scale decreases the odds of any one spot getting snow goes down.   

Define "lately"...Just this year, or did you see something between 2016 and now? Again I'll mention the "bomb cyclone"...lol

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2 minutes ago, psuhoffman said:

Anomalies still happen. But almost all the snow to our south...and at our latitude lately, comes from getting lucky with an upper level feature to crash temps.  When was the last time we saw a huge expanse or cold powder to the northeast of a low coming across the US?  If the coverage of snowfall overall in a larger scale decreases the odds of any one spot getting snow goes down.   

Rare events have weird distributions. That said, 6" of snow wasn't unusual 50+ years ago in  Louisiana. The record snowfall there is 14" and every few years there would be a decent 6+" event in the middle and upper parts of the state where the 9" were recorded.

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