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Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
I'm down to 14 degrees and it's back to absolutely pouring down again. Vis around 1/4th mile. The radar doesn't even look impressive but even seeing returns at all on the Plateau when the DGZ is almost to the surface, is impressive. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
The HRRR snow expansion down the valley and along the foothills is happening before our eyes in real time. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
At these temps the pre-treatment is way less effective. Could the sounds have been a wreck? -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
It's been crazy how it's just sat in place. The bands, as you guys are now getting to see, are darn fun. That's the best and worst part about ULLs. At times their banding may give an area 6 inches, and 20 miles away that area may only get an inch. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
That's ripping. I can never get good photos of snow falling! -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
I have a spot where I measure and a spot that I clean off every three hours to measure. That will give you a good idea of your rates. And in cases where the snow is wetter than this, it will give you a better measurement of how much snow actually fell since you won't have as much compaction. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
I'm down to about 1/4th inch per hour now, hopefully it can keep up here until 9am at least. That would get me another inch and a half. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
I think the 10+ projections from models that way will probably verify. The ratios are incredible so it will really stack up. I can't account for micro climates there because I don't know them like the folks who live there. But I did see that this was overperforming around Bristol at least. And Tri had 5 inches 2 hours ago. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
That's when I started really accumulating fairly quickly. It got up to about 3/4ths inch to 1 inch per hour for a few hours. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
Looks like Hamilton is getting in on the action now. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
Looks like the radar is about to light up over TellicoWx soon. It's quickly filling Blount County and extending down into Monroe County now. I see that the Tri-Cities has 5+ already and Tys over 2. Hopefully our NE Tn crew us doing well. I hope Holston's snow hole wasn't a thing either. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
This isn't quite developing the way the HRRR seems to think it should, which was down the Apps and expanding NW, but a big shield is developing over the Plateau and its heading towards the valley. The radar does look like it's itching to explode down the 75 corridor to the mountains of SE TN. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
5.5 inches, tiny flakes but very thick and foggy looking, its 15 degrees. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
Looks like radar is filling in back to the South west too, with a solid area that may move over everyone south of 40, provided it survives the Plateau. -
Jan 30th-February 1st 2026 Arctic Blast/ULL Snow OBS Thread.
John1122 replied to John1122's topic in Tennessee Valley
You may be a little too far from the radar for it to see that band well. I hope some of our Knox crew us up, looks like heavy snow sagging across them.

