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December Med/Long Range Discussion


WinterWxLuvr

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3 minutes ago, Bob Chill said:

Man, surface is colder this run. Most of the area west of the fall line stays below freezing through 18z before the precip shuts off. Mappy, psu, and losetoa6 have no power by this time. 

That would be a pretty significant ice event after the snow for NW areas.

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4 minutes ago, Bob Chill said:

Man, surface is colder this run. Most of the area west of the fall line stays below freezing through 18z before the precip shuts off. Mappy, psu, and losetoa6 have no power by this time. 

It is a very cold run which isn't surprising given the high position.  That's the biggest bone of contention between the two camps.  I don't trust either model.  I suspect the GFS is too warm but am not yet sold on the Euro.   Lots of time to figure out which model camp is right. 

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8 minutes ago, Bob Chill said:

Looks like the column is still good @ 12z sat. 850/700hpa temps are good. Surface very cold. Wish I had soundings. Regardless it would be a high impact event so nice to see. 

850's rise 11 degrees Celsius over my house in 6 hours Sat morning.  700 temps are near freezing by that time.  Surface is frigid.

You got a generator?  I'm coming down.

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Just now, usedtobe said:

It is a very cold run which isn't surprising given the high position.  That's the biggest bone of contention between the two camps.  I don't trust either model.  I suspect the GFS is too warm but am not yet sold on the Euro.   Lots of time to figure out which model camp is right. 

Big differences between the two leading in. Euro stalls the upper level low off NF and blocks the hp from going pretty much anywhere. If that feature is wrong then reality will be warmer to much warmer. Back to back runs with similar solutions at least leads some credence. GFS is jump on this one. 

I would say this particular run is the highest potential so we can only go downhill from here. lol

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1 minute ago, WinterWxLuvr said:

850's rise 11 degrees Celsius over my house in 6 hours Sat morning.  700 temps are near freezing by that time.  Surface is frigid.

You got a generator?  I'm coming down.

 

I have a great generator. Cable/internet/food always protected. I'm not drinking right now so BYOB. 

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10 minutes ago, Bob Chill said:

Man, surface is colder this run. Most of the area west of the fall line stays below freezing through 18z before the precip shuts off. Mappy, psu, and losetoa6 have no power by this time. 

Actually if you look at the precip and temps side by side I think 90% of this run is snow. The temps spike as the precip ends. You can tell because if you look at there the precip was over on both frames then go back and look at the temps from that time the warm up is at the back edge of precip. It's a good old 6-8" thump ending as some sleet and freezing drizzle.  The next wave is where ice could be a threat if the boundary hangs around but now we're way out there. 

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1 minute ago, psuhoffman said:

Good catch bob

I compared to 0z. Euro trended stronger and better placement with this feature so that's slightly encouraging. Losing ground is a sucky trend. Odd that the GEFS members mostly looked like the op in some fashion or another. Not much support there at all for what the euro is serving up. Looks like another model war on our hands. 

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26 minutes ago, losetoa6 said:

CAD holding all the  way down to northeast Georgia..Lol Saturday morning on euro . Reminds me of the 1994 ice storms. Of course that was colder and in January. Could get real ugly around here.

Could be similar to 12/8/13 with more snow for the guys south of us. Once south of Baltimore there was a sharp cut off with that one  This upcoming air mass will be stronger than the one 3 years ago so areas south could do well. This cold shot looks legit. High temps in the low  to mid 20's on Thursday  and Friday before the storm is very tough to do in mid December without precipitation falling. Very impressive cold for so early in the season.

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7 minutes ago, Maestrobjwa said:

Now, looking at what has happened the last two winters with storms following very cold air masses...Doesn't the cold air Thurs. and Fri. make the Euro solution a bit more likely?

More about precip to me.  Euro has a low next Sat morning in ne Arkansas which slides almost due east in the next 6 hours. GFS has the low in north central Missouri and slides it to northern Indiana.  That's why the gfs precip is so paltry while we have the cold.  Also, and more importantly, the Euro has a monster high sitting over New England the the gfs doesn't have.  Bob referenced this earlier.

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2 minutes ago, WinterWxLuvr said:

More about precip to me.  Euro has a low next Sat morning in ne Arkansas which slides almost due east in the next 6 hours. GFS has the low in north central Missouri and slides it to northern Indiana.  That's why the gfs precip is so paltry while we have the cold.  Also, and more importantly, the Euro has a monster high sitting over New England the the gfs doesn't have.  Bob referenced this earlier.

Yeah. The major difference I see is the position of the HP. The Euro has it in NE. The GFS has it due East of OC during that same time frame. And we can see why with Bob's explanation above.

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6 minutes ago, losetoa6 said:

Agree about next Thursday/ Friday .Low mid 20 highs with sunshine on December 15th would be very noteworthy for sure "IF " those temps verify.  Couple days ago models had teens up our way for that time period- they backed off slightly.  

 

Btw...do you have the accumulations by chance from December 2013 storm?

Pretty sure I recorder 7.5 inches with decent icing on top. that was on sunday. then we had a break on monday temps got near 40 before another 5.5 inchest fell early Tuesday morning. 

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Man, surface is colder this run. Most of the area west of the fall line stays below freezing through 18z before the precip shuts off. Mappy, psu, and losetoa6 have no power by this time. 



I said anniversary snow, not ice ;)

Could be similar to 12/8/13 with more snow for the guys south of us. Once south of Baltimore there was a sharp cut off with that one  This upcoming air mass will be stronger than the one 3 years ago so areas south could do well. This cold shot looks legit. High temps in the low  to mid 20's on Thursday  and Friday before the storm is very tough to do in mid December without precipitation falling. Very impressive cold for so early in the season.



Ohh, I could get down with 12/8/13 snow. Picked up 7.5" followed by some sleet/ice. Was a nice overachiever if I recall. LWX wasn't calling for 6+.


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