Light Snow Event 1/27/21

[Curt]

Since some were into the 70

[Clarksville Snowman]

Bring it!

[schneitzeit]

3k and 12k NAM look so different. Can someone explain to me why that is?

[Dyersburg Weather]

Latest HRRR looks good for some flakes.


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[schneitzeit]

That's good. HRRR didn't look so hot this morning. Glad it looks better for your area.

[Drifter]

I

[Nash_LSU]

HRRR didn't look so hot this morning.

It was pretty anemic this morning. Now it's showing a light little something for us here, but with it being 63 degrees today and 70 yesterday, I'm not buying anything sticking.

[snowdog]

3k and 12k NAM look so different. Can someone explain to me why that is?

Higher res is picking up on something the 12k isn't. Question is, is it right? One has 1" for BNA, the other nadda.

[Dyersburg Weather]

It was pretty anemic this morning. Now it's showing a light little something for us here, but with it being 63 degrees today and 70 yesterday, I'm not buying anything sticking.

Only got 48 here today.

[snowdog]

00z HRRR wasnt terrible for BNA. Showed about an inch. 0z 3k Nam showed about a half inch.

[Susan]

National Weather Service Nashville TN
302 AM CST Wed Jan 27 2021

.DISCUSSION...

After a very nice Tuesday, big changes are at our doorstep for
today. A fairly deep upper trough will sweep across the region this
afternoon and evening. This trough has a pretty good moisture source
with it, which will spread showers into our west and south this
morning, and eventually over the entire area through the
afternoon, then finally off the Plateau late tonight. Additionally
a weak SFC low will pass just south as well. These features will
bring significant cooling throughout the afternoon and evening,
mixing and or changing pcpn to all snow before ending.

There are big difference in some of the models but at this point
given available remaining moisture and transitions periods, much of
the north and southern plateau may see up to an inch this
afternoon/tonight, with 1-2 inches on the upper Cumberland. Will
issue advisory for just those few counties for late today/tonight
at this point, as confidence is low.

Behind this system we will end the workweek with dry conditions
with temps very close to seasonal normals.

Saturday, weak upper ridging moves east and a fairly deep upper
low/tough moves into the plains. This will shift our upper flow
southwest and good moisture advection will begin early. Showers will
eventually break out during day and become numerous Saturday night
as a tight SFC low passes just north. On Sunday the SFC low will
move further east, dragging a cold front through the area during the
morning, followed by the trailing upper trough in the evening.
Showers will decrease Sunday, but a few will linger on the Plateau
into the night, possibly mixing with snow overnight.

The first of next week will begin dry with another system bring
showers in mid-week.

[cgauxknox]

We've got a WWA to the north of Knoxville and a WSW warning for the higher elevations of the Smoky Mountains but looks like nada for the southern valley. That's to be expected, but the snow is so close I've got my fingers crossed that maybe we'll get a surprise out of this system. At least we've got some action close to us.

[Nash_LSU]

HRRR keeps retreating further north with the snow on every new run. Looks possible for everyone living on the northern and eastern state borders to see snow, but I'm thinking everyone else gets a lovely cold rain. I'd love to be wrong.

[schneitzeit]

HRRR keeps retreating further north with the snow on every new run. Looks possible for everyone living on the northern and eastern state borders to see snow, but I'm thinking everyone else gets a lovely cold rain. I'd love to be wrong.

This one isn't it for anyone south of 40.

[Bruce]

Sweet spot today if there such thing will be Missouri bootheel