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January Medium/Long Range Discussion


WinterWxLuvr
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15 minutes ago, 87storms said:

I haven’t analyzed the 500 maps much but almost looks like a Jan 2000 situation on the gfs.

Ah! Not carbon copies or anything but for sure strange and similar with the entire track/progression. I'll have to look at the Jan 2000 h5 maps tonight. Interesting. 

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19 minutes ago, Ralph Wiggum said:

6z gefs are head scratching. The Friday system on the means is closer than the Monday system. You would think compared to the ops that the days got reversed on the GEFS. GEFS want little to nothing to do with Monday:

gfs-ememb_lowlocs_us_12.thumb.png.810be24db8a860b24a784b2565139576.pnggfs-ememb_lowlocs_us_24.thumb.png.0db0affea9a26293d88b0bc206bcd47c.png

Way different than the eps

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1 hour ago, mappy said:

Let me try and translate:

06z GFS is wild and white for Monday. Good pattern. Good vort passage, periodic chilly in the future. 2-4 is his first guess. then pattern stabilizes at some point later

You needed to lead your post with this:

image.png.199286fa03994e3c164f88252d967cdc.png

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8 minutes ago, clskinsfan said:

You are killing us man. :) Actually we would take this in a heartbeat compared to what the Euro is saying. Pretty clear battle going on right now. GFS/ICON vs. Euro/CMC. Still a ton of time left though. 

C’mon man. It only showed a foot of snow. How can he be expected to be happy with that?

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2 hours ago, Weather Will said:

It would be nice to see other models pivot toward the GFS current solution today and to see ensembles show some support.  Like a lot of our setups, until we get into the short range, it could go either way.  At least with cold air around we are in the ballpark.

Sage analysis..

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23 minutes ago, Buddy1987 said:

Can anyone answer as to whether or not RAOB sites have improved for model data purposes out in sparse regions of Canada to help us with the vort inbound and timing purposes? 

With satellite sampling the argument for the data sparse regions is not as substantial as some make it out to be. Obviously, we'd rather have RAOBs - but satellites do a really good job of sampling in the holes between sample sites. 

Would argue that GOES and POES do way more to improve forecasts than adding one or two RAOB sites. 

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3 hours ago, Cobalt said:

Looks way more similar to Feb 2014

Yes. The 06Z GFS has that more classic Miller A track, which would equate to a more climo snowfall distribution. In other words, MBY here near Rte 50 east of 95 would more likely have some mixing potential than be in the max snow zone this time around.

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Good morning y'all. Looking at guidance this morning, it's pretty prudent to lead with this potential setup is riddled with fine details and the probability that we are at the final solution is extremely low. In order for the sub-forum to get what the GFS just advertised, you need everything right in terms of 5H spacing, phasing timing, and thermodynamic structure to yield a scenario like that. Absolutely in no way am I saying it can't happen like that. The major storms, especially the historic storms all have that occur, but this isn't a split phased bomb where a southern jet gets merged with a NS vort. This is very much a deep digger, translating into a Miller B bomb that could climb the coast due to increased spacing between the TPV over Quebec and the second s/w progressing through the northern plains at the same time our storm is going off. Timing timing timing. It is everything with this setup, but there is absolutely an environment available for something truly special. We haven't even gotten into the fine details of frontogenic forcing, jet stream dynamics, complexities of LLJ structure and positioning. The big ones are special for a reason, so keep a level head and don't swing hard on each run. That's Ji's job

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6 minutes ago, Fozz said:

The GFS went from another Boxing Day 2010 to another January 2000 in the next run. Obviously this is all very far from certain and it's still being figured out but let's hope the final outcome is similar to this latest run.

Yep, and my guess is we are nowhere close to the way this will all evolve and major changes from run to run are still in store. I mean, look at the GFS now basically pushing the system back in time. It used to be a weekend system and now it's mostly a late Sunday/Monday storm now for us.

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2 hours ago, Ji said:
3 hours ago, Weather Will said:
It would be nice to see other models pivot toward the GFS current solution today and to see ensembles show some support.  Like a lot of our setups, until we get into the short range, it could go either way.  At least with cold air around we are in the ballpark.

Thanks for that

Weather Will is going to post a deceptive accumulation map with 25 inches being gray and 100 inches being purple and say things look bad.

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