John1122
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Everything posted by John1122
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GFS is downright bullish through Monday. NAM/RGEM less so as of now. It's going to depend on if you get under some convection or not.
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GFS is pretty decent for the 1st wave for many but doesn't bring as much on the 2nd wave this run. Far SWVA and SEKY add another inch or so to this with wave 2.
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HRRR looks decent for Western areas. Event still ongoing when this ends.
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MRX Disco.
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January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
Looking back at the thread, there was some mixing in some areas but it was way colder than inituallly forecast. MRX had valley highs in the upper 30s. No one seemed to make it above 27. 2-6 inches plus ice/sleet underneath were common here. That may have been the last great clipper we've had here in winter. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
That said, the biggest difference in that event and this one was that one was extremely cold. Models busted like crazy on that aspect. 72 hours out the NAM had heavy precip but had it as rain or freezing rain over a lot of the area. By event time temps were between 19-24 and it was all snow. 84 hours out models were showing 1-3 inches with a few dollops. At 48 hours the RGEM had started showing some 4-6 inch totals. During the event the HRRR started showing the 5-6 inch totals. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
This was in the January 2016, 19th or 20th. -
Need the Margie Ison pic. She was the Clipper queen. We used to get a couple every winter that were 2-4 locks.
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January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
We had an ultra clipper a few years ago that models just downplayed til the end besides the rgem, which began to catch on about 48 hours out. Border counties from the mid-state east got 3-6 inches. I believe 2-4 was fairly wide spread elsewhere. Model totals rose to the very last run and most never caught up. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
Both systems on the 06z GFS by midnightish Monday. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
MRX really downplaying any accumulation outside of where banding sets up Friday night into Saturday but says accumulation will happen under the bands. Which for some reason they say are more likely in NETN/SWVA (which I don't really see why they say that other than that they always say that with any potential event) but they feel short term/hi-res models will likely be the only thing that sniffs them out once the event is very close.. . Regardless, the GFS was particularly nice at 06z with the potential on the 1st wave. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
UKIE has two systems in the next 5 days that do pretty well for a lot of the area. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
Long range GFS fridigity. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
GFS has nearly forum wide accumulations. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
NAM has some good looking snow showers moving across the area and another clipper poised to follow at the end of it's run. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
The Euro has now moved some pretty cold air into our region inside of D10. Looking back from around January 1st, I'm actually more surprised we've seen several wintery chances from then til Jan 15th or so than I am that the cold looks to be moving in around January 20th and beyond. I expected much less favorable weather during these past couple of weeks and modeling was showing that at the time. But as we approach verification time the NAO tends to remain negative and we stay on the cool/warm roller coaster with embedded snow/wintry chances based on timing. We have a good cold shot coming with another wintry chance in a few days. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
Regarding the SSW, it's likely fueling the continued -NAO, which is keeping the SE ridge just enough at bay to keep us from having 0 chance at anything but 60s and cutters. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
Good write up by MRX this morning about the potential for snow Friday night into Saturday morning and how models are very possibly underdoing the precip that falls as snow. MRX also mentioned there will be no temp issues and all areas will see frozen that see precip. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
Later in the run the GFS has a huge snow event and near 0 cold. But it's also likely to change significantly by 06z too. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
The OP GFS after day 7 is not worth getting excited over or upset about. Keep in mind 6 hours ago it tossed the arctic into our backyard at the same time frame as it's showing a poor pattern now. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
The 0z ICON has a perfect southern slider that is really nice for Western areas especially but gets the whole state basically. The GFS has multiple 1-2+ inch events over the next week or so and it really hammers elevated areas in the East with big time upslope. -
January 2021 Medium/Longterm Pattern Discussion.
John1122 replied to AMZ8990's topic in Tennessee Valley
I wouldn't be surprised to have some AN out there but it looks to be transitional. Those forecasts usually center on D11. -
Jan 11-12 Mississippi Mauler: Will it or won't it?
John1122 replied to John1122's topic in Tennessee Valley
Snow moving back in now. Nickels flying.- 112 replies
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Jan 11-12 Mississippi Mauler: Will it or won't it?
John1122 replied to John1122's topic in Tennessee Valley
I'm hoping with dark coming on they can get something to stick if they haven't already.- 112 replies
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Jan 11-12 Mississippi Mauler: Will it or won't it?
John1122 replied to John1122's topic in Tennessee Valley
That band north of Nashville has had some pretty good reflectivity this afternoon. I hope some of our posters in that area at least got something nice to look at.- 112 replies
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