NorthGAWinterWx link said:
[quote author=Stormlover link=topic=80.msg5112#msg5112 date=1483152134]
[quote author=NorthGAWinterWx link=topic=80.msg5110#msg5110 date=1483151381]
[quote author=Stormlover link=topic=80.msg5109#msg5109 date=1483150890]
18Z GFS gives Huntsville 1.6 inches of snow with temps of 28-31 on Thursday night alone, before any second wave
170106/0000Z 168 02007KT 31.0F SNOW 15:1| 0.7|| 0.00|| 0.00|| 0.045 15:1| 0.7|| 0.00|| 0.00|| 0.04 100| 0| 0
----------------------------------------------+----++-----+-------------++--------------++-------------++-----------+---+---
170106/0300Z 171 02007KT 30.1F SNOW 6:1| 0.3|| 0.00|| 0.00|| 0.050 11:1| 1.0|| 0.00|| 0.00|| 0.09 100 0| 0
170106/0600Z 174 01007KT 29.4F SNOW 10:1| 0.3|| 0.00|| 0.00|| 0.028 10:1| 1.3|| 0.00|| 0.00|| 0.12 100 0| 0
170106/0900Z 177 01007KT 28.3F SNOW 9:1| 0.3|| 0.00|| 0.00|| 0.029 10:1| 1.6|| 0.00|| 0.00|| 0.15 100 0| 0
Again, it depends on how far south the first wave will be. If it's further south, Huntsville will be on that colder edge.
Most likely the model is picking up that it's actually IP accumulations.
I have no idea where the snow is coming from. The 850mb temps won't be cold enough to support snowfall...there could be a narrow band of snow along the colder edge but I would think that the precip would be mostly IP...depends on how deep the cold layer will be.
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[/quote],That's incorrect.(striked through that part) This takes the 850's into account and says the chance for snow as the precip is 100% at those times(in bold)
And I went and checked the 850's on weatherbell and they are all below freezing from the time this starts (0Z Thur night) through the period, they come crashing in from the NW and continue to fall).
[/quote]
Are you sure your looking at the right model? 18z GFS 850 temps are 5c north of Birmingham at 0z Thur and all the way till 18z Thur. The 850 temps warm to 10c even for Huntsville at 18z Thur. 850 temps start crashing over Hunstville Fri evening on that run.
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[/quote] Birmingham has nothing to do with it, and 18Z Thur has nothing to do with it. I'm not wasting any more time on someone that clearly doesn't know what he's talking about. When you find the 850's for 0Z Friday(Thur night) and into Friday, come back and talk. Do you even now how to read the times on the GFS output I posted? :
??? here's a hint, 0Z Jan 6 is 6PM Central Thur night...THAT'S ABOUT WHEN THE SNOW STARTS on the output I posted. Jeez...