John1122
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December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Looks like the 18z American models are having issues. My friend has a few acres for sale at 2900 feet. So tempted to move but I'd have to sacrifice things like reliable internet and you know, build a new house plus convince my family moving to fulfill my snow obsession is a good idea when I can drive to 2900 feet in 5 minutes or so. It would probably double my snowfall yearly though. That extra 1200 feet makes a huge difference. I think that area here will probably get several inches of snow out of one or both systems next week. I believe the snow level was down to 2660 feet on a sounding I looked at that showed rain here during the overnight runs. I don't think there's any private land above 3000 feet here anywhere. The government owns it all in some form or another be it WMA, State Park or the Air Force I think owning the 3500+ land on Cross Mountain. The top there averages about 55 inches of snow a year. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The Euro is back to me getting 2 or 3 inches Monday. It's going to be razor thin for a lot of us next week. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Overnight modeling is all too wound up/further north. Very cold rain with snow above 2500-3000 feet. Need everything a good 100 to 150 miles south but there's not much to force it down and cold is extremely marginal. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Wave 2 is weaker and further north. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Too warm on the Euro this run on wave 1. Jamestown gets some heavy mix. The rest of us stay liquid. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
GFS is slowly working it's way more towards the more snowy models. 12z today it bad virtually nothing in the mountains. 00z it buries the mountains with 6-10 inches. Bigger and longer lasting precip shield in general too. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The ICON has a 1 to 2.5 inch event basically for some of middle to the Plateau. Doesn't really hit the far Western areas like the NAM did. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
RGEM is slower/warmer than the NAM. On the NAM the Northern stream wave gets out in front of the southern system. On the RGEM the northern wave is more in synch and is sitting in the great Lakes when the storm is getting going. That shuts down some of the cold for the system on the RGEM so it's a rainer. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The NAM rolled in guns blazing for the West and Mid Valley. Fizzles for the East Valley. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
In the 1960s it snowed here no matter what it seems like. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Ventrice also tweeted earlier that the Westerly OBO was beginning to affect the Troposphere and that could possibly weaken the MJO convection for a while. I've never researched it for here, but for Atlanta's winter events I believe GaWx found they mostly occurred when the MJO was in the C.o.D. Generally if Atlanta is having a shot at snow it's cold here and we've had it too. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The weeklies had probably their snowiest run of the winter season so far. It wasn't spectacular but would represent something close to normal for most areas through January 25th. The snowiest 4 weeks we have are basically January 17th-February 14th so the Weeklies are just reaching there at the very end. It was around 4-6 inches in Eastern areas, 2-4 Western and southern areas. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
If I were guessing most of the big -NAO storms that hit eastern areas come when the Pacific is also favorable. The best temperature set up obviously comes when all three are negative. But when the EPO is negative in conjunction with the AO, basically everyone in the South, west of Raleigh to Columbia is colder when the NAO is positive than they are when the NAO and AO are negative but the EPO is positive. So our ideal combination is -EPO/-AO/-NAO, followed by -EPO/-AO/+NAO, then +EPO/-AO/-NAO. We are rarely dry for long but it can happen. Getting cold is always our biggest step towards wintery weather Valley wide and it's much easier when the Pacific is working for us instead of against us. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The Pacific being poor is just a killer. I'd take a favorable Pacific over the -NAO 8 days a week. Miller A rain event happen when the Pacific is bad. Wide spread winter is possible when it's good even if the Atlantic is bad. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The AO is supposed to go epic in it's negativity. If the Pacific can marginally cooperate we should be heading for frigid weather later in the month. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Definitely and uptick in snow across most members vs 12z. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Starting at 102 the GEFS has most members showing a 24 hour winter event evolving across the Valley. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
There's some school of thought that solar flares tighten the polar vortex and cause the NAO to go + but that it runs in 100 year cycles that cause it to go negative. You can probably guess which cycle we appear to be in right now. However, not all is lost, just late year researchers at Columbia University in the Earth Observatory and School of Engineering released a paper that pretty much debunked any connection between the two. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
The difference in the 00z Euro vs the 12z is the PNA ridging. At 00z is was stronger and it shunted the system further south, that let it wind up more. 12z the ridge was less sharp and the system stayed weak and open as it rolled across the south. I wouldn't sleep on it yet. It may not be a block buster but I wouldn't rule out snow for someone in the region from it. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Not saying the Euro is going to verify, but events like that do happen here, it's just been a while. One of these days it's eventually going to happen again.- 857 replies
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December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Major winter storm on the Canadian as well for the region later in the run. Ice and snow on top of it. The teleconnections look much better. The Euro is getting towards a -EPO/-AO/-NAO look. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
At 500, the GFS looks great around the 15th all of a sudden. Nice -EPO bumping into Alaska with a near nationwide trough. -
December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
Not as extreme as the Euro, but the Icon laid down a solid 2-3 inch stripe from the Plateau to Nashville and a little southwest of there, also a dollop of 2 inch area in NE Mississippi in the same timeframe as the Euro storm. -
For some reason I expected it to be warmer today. It's a steady 35 and should probably start falling in the next hour, as the sun will set for me in about 10 minutes.
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December 2020 Medium/Long Term Pattern Discussion.
John1122 replied to John1122's topic in Tennessee Valley
I just noticed how impressively it blanks Knox county on that run.
