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Chill Storm Discussion and Obs


WinterWxLuvr

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Well I'm not. Equality should be emphasized when it comes to winter storms in the greater D.C. are. Equality.

Yeah but you all get all the fun summer severe weather when we get shafted. :)

I'll be about 30 miles NW of Pittsburgh at 1200' this storm instead of Frederick so I think I'll get to see some good snows for a change!

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6z GFS and EURO certainly are interesting for the beginning of this storm out here....NAM is blech...we shall see..

MERRY CHRISTMAS and HAPPY HOLLIDAYS everyone

Merry Christmas and Happy Holidays to you and everyone else as well.

Haven't really followed the NAM that closely but will be now with it being within 48 hours. You wouldn't know off hand if it's temp profiles have stayed consistent or if they have trended warmer or colder?

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6z GFS and EURO certainly are interesting for the beginning of this storm out here....NAM is blech...we shall see..

MERRY CHRISTMAS and HAPPY HOLLIDAYS everyone

Every time I look at a model, this low seems just a bit further east and the transfer a bit further south. The NAM has this in NE AL tomorrow morning. I can't tell where the Euro is exactly because of the 24 hr jumps, but it looks coolish.

I know location is a big deal with this one, but this may have been written off too quickly.

Merry Christmas everyone.

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Merry Christmas and Happy Holidays to you and everyone else as well.

Haven't really followed the NAM that closely but will be now with it being within 48 hours. You wouldn't know off hand if it's temp profiles have stayed consistent or if they have trended warmer or colder?

Colder. For my area anyway.

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Colder. For my area anyway.

Though the GFS has steadily trended colder in my area suggesting a fairly substantial slopfest the NAM and the SREF's are the ones I put more weight into considering the time frame we are at with the storm. At this point both suggest little to no frozen outside of the mountains and should really raise a red flag for anyone in the area hoping for more then a token snow flake or sleet pellet. Here's hoping we start seeing them coming in with substantially colder runs

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A tale of two models. At 18Z today's GFS has the temp at JYO at 34 while the NAM has 36 and change. More importantly, the GFS warm layer still is like 0.6C while the NAM is already 1.6. It essentially has Leesburg as sleet while the GFS still might support snow. Both warm up quickly after that. Leesburg looks to be on the line of where something decent might happen or they join the rest of us with a mostly rain storm. Ths surface temps with this storm just aren't that impressive. Back when I was still at HPC I could get verification at least of the 850 temps and knew the biases. Back then, the GFS usd to be a little cold at 850 and underplayed the elevated warm layer. I don;t know if that is true any longer or not.

The srefs really show that there will be a demarcation somewhere across the area west of DC and east of cumberland Maryland. Dc nmay start as very sloppy above freezing snow but then quickly changes to rain.

post-70-0-33223400-1356451724_thumb.png

Cumberland is far enough west that most of their precip on the various SREF members are some type of winter weather.

post-70-0-78232100-1356451815_thumb.png

Since I ahve no hope of getting any real storm. I'm leaving this thread and will let winterrluvr and those who might get some love have it. My gut feeling is the warmer sounding will be right at least for the elevated layer. At the surface, much depends on how cold it gets tonight.

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A tale of two models. At 18Z today's GFS has the temp at JYO at 34 while the NAM has 36 and change. More importantly, the GFS warm layer still is like 0.6C while the NAM is already 1.6. It essentially has Leesburg as sleet while the GFS still might support snow. Both warm up quickly after that. Leesburg looks to be on the line of where something decent might happen or they join the rest of us with a mostly rain storm. Ths surface temps with this storm just aren't that impressive. Back when I was still at HPC I could get verification at least of the 850 temps and knew the biases. Back then, the GFS usd to be a little cold at 850 and underplayed the elevated warm layer. I don;t know if that is true any longer or not.

The srefs really show that there will be a demarcation somewhere across the area west of DC and east of cumberland Maryland. Dc nmay start as very sloppy above freezing snow but then quickly changes to rain.

post-70-0-33223400-1356451724_thumb.png

Cumberland is far enough west that most of their precip on the various SREF members are some type of winter weather.

post-70-0-78232100-1356451815_thumb.png

Since I ahve no hope of getting any real storm. I'm leaving this thread and will let winterrluvr and those who might get some love have it. My gut feeling is the warmer sounding will be right at least for the elevated layer. At the surface, much depends on how cold it gets tonight.

fringed by the cold air....would be poetic justice for me to get rain while just to my West is pummeled after yesterday's snow.....always on the line here...sometimes it works sometimes no
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That CAD signature on the EC is beautiful for the northern Shenandoah Valley. 30.45"+ pressure over Montreal.

I don't have soundings for the euro, but using GFS soundings you flip around 2-3pm......maybe to sleet a bit earlier....I know some people like to use the NAM but it is not a good model...not sure it is worth a whole lot unless it a vast improvement over last winter

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