
John1122
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Everything posted by John1122
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January 28th-29th Clippers/NW Flow Obs/Last Minute Forecasts.
John1122 replied to John1122's topic in Tennessee Valley
Slowly picking up here. Nickels and dimes falling now. Sticking on cars that haven't been running, deck rails etc. -
January 28th-29th Clippers/NW Flow Obs/Last Minute Forecasts.
John1122 replied to John1122's topic in Tennessee Valley
I saw those soundings in the showers on the HRRR. Should be just blinding snow as the cells come by. Hopefully they get as many of us as possible. -
January 28th-29th Clippers/NW Flow Obs/Last Minute Forecasts.
John1122 replied to John1122's topic in Tennessee Valley
Light snow here. Not really showing up on radar really. 33 degrees. -
January and February 1984 were awesome here for winter weather. We had 14 inches of snow in January. A 4 inch event, a 3 inch event a few days later and a 7 inch event a few days after that. There were two days of well below zero cold and several more near zero. February was a roller coaster but we got a foot that month. 7 inches early in the month on the 6th and 5 inches on leap day. The early February event had a -7 low in its wake. Looking at observations it was a northern Plateau pattern. Oneida and Jamestown have similar numbers. Numbers taper off south or east of those areas but I never trust airport data. To many M's that happen around snowfall days.
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January 28th-29th Clippers/NW Flow Obs/Last Minute Forecasts.
John1122 replied to John1122's topic in Tennessee Valley
The hi-res models keep putting that band right over me. The RAP put down 3-4 inches on its extended 09z run. I'm hoping for an inch. -
January 28th-29th Clippers/NW Flow Obs/Last Minute Forecasts.
John1122 replied to John1122's topic in Tennessee Valley
A few strays are floating by out there right now. Lots of dry air still. The lapse rates are really steep in the convective snow showers the HRRR has been advertising. 20-25c temperature drop from the surface to 700mb. -
MRX added the Northern Plateau counties to the WWA but mentioned that heavier convective showers are also possible into the Central Valley. Should be fun if you get a band or snow squall. The eastern mountains are golden.
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Historic Tennessee Valley Cold, Snow, and Ice Events
John1122 replied to Carvers Gap's topic in Tennessee Valley
January 10th/11th 1997. There was 3-5 inches from the Plateau west. Not sure about Chattanooga, Tri, and Knox, very unreliable snowfall data from MRX during that time frame, but it shows those area with 1-2 inches. It was a very cold/high ratio snow. I had 4.5 inches. A coop station near me recorded .35 precip. The airports in East Tennessee recorded much less QPF, like .10 to .15. Probably an error but I am not sure. OHX has Crossville, Allardt and Jamestown at 5 inches on .4 precip Nashville at 3 inches. MEG has 3.6 in Memphis, and a general 3-4 across most of West Tennessee. It ushered in a very cold week.- 127 replies
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Euro took a huge step southeast with the system next week. Major Apps runner/winter storm for western forum areas vs a cutter up into Illinois at 12z. The trend this year has been East and South. Maybe another storm in the process of doing that. Another step like this last one and we are looking at something like what the GFS was showing that it lost.
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HRRR has that aggressive band from Kentucky across my house and it pushed it down to North Knox around PowellVolz.
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GFS with a best case scenario for mby. I've seen vigorous systems like this break off the Plateau and stream into Knoxville before.
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If it unfolds like that people may score an inch or two in a hurry. It's beginning to show some heavy streaks in places outside the eastern mountains. Especially SE and E Kentucky. It will struggle with the exact placement of the heavy streaks but it shows the potential if you get under one.
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Cash me out for winter if we get this. Most of this falls at D9 too, so not total fantasy land. Gonna be a huge storm for someone from Missouri to the Carolinas. Who will be a mystery. Bitter below 0 cold behind it. Not as extreme as 06z.
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Same here, except for the parking lot piles. People don't often get their lots graded here. But north and east facing places still have snow. My back steps still have it and part of the yard.
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RGEM ratio'd also looks pretty good for a widespread inch or two. If it doesn't melt tomorrow, and it shouldn't, I'll have maintained snow cover. My grandmother always said that snow that lays around in the shade is waiting on the next one.
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There were some notable upstream changes in modeling today that are starting to play out with some westward shift. We likely do not have enough downstream blocking to lock in a significant inland shift, but even a further slight shift and readjustment over the coast on the 0z & 6z suites would significantly increase accumulation potential for the eastern Valley. Obviously Western-Central VA/NC and the Blue Ridge would end up the big winners. Just hoping we at least get some kind of accumulation along the I-75 and I-81 corridors beyond a dusting. There are apparently going to be some Gulf Stream flight datasets for a later time that could further change modeling suites tomorrow. We shall see... The unfortunate thing is, 95 times out of a 100 without the blocking that's currently not there, the eastern half of North Carolina especially, would have almost no chance of being West of a storm.
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The GFS was a massive shift west into North Carolina with the snow shield. I don't know if we can get another one like that, but if we did it would be a very nice event for East Tennessee even at lower elevations.
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In model mania, the Euro bounced back a little for Eastern areas. Pretty good upslope in the mountains and around an inch or so elsewhere.
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GFS whimpered again. I guess the ultra dry runs are going to come to pass.
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That definitely looks less strung out and more tilted that those two runs. I'd love to see it slightly ahead of the northern energy and let it tug it back some.
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Wait until 0z and it will change again I suspect.
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The NAM at 84 is similar to the 12z GFS with the 500mb vort in the SW. Probably going to see the 18z GFS evolve in similar fashion.
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06z GEFS had a sizable bump on the mean as well.
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Very cold behind the storm that run. Highs in the 20s and lows near 0 in snowpack areas.
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Another big improvement with the 06 GFS. Taps the gulf and gets East Tennessee into some heavy snow.