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1/11/25: The little weekend thing.


dailylurker
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4 minutes ago, Bob Chill said:

What qpf range did the mesos show leading in and does reality coincide or is it juicier? Was the northern extent well modeled or is reality further north?

Remember Bob, this is a weather board. Reality has no place here.

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8 minutes ago, Bob Chill said:

What qpf range did the mesos show leading in and does reality coincide or is it juicier? Was the northern extent well modeled or is reality further north?

I'm saying that the models picked up on it pretty darn well in my area anyway. Here the QPF I think was like 0.5?! And we're on course for 5". Nice to have temps in the upper 20s to stay on course with the 10:1 ratio. Kuchera and the 10:1 were almost identical for the last 24 hours. And they're seeming to be fairly on the money.

In Missouri I'd say that the northern extent was very well modeled. I was extremely skeptical, as were a lot of people in the Western states forum that it would hold that way. Surely the cutoff had to be much sharper than what the models were saying. That always freaking happens.

Not this time.

Of course, the Appalachians could throw a big wrench into it for you all when it heads East. But so far, the sharp cutoffs we assumed were not being modeled correctly have not materialized.

We're headed to a nice 4-5" here. And STL, about 65 miles north of me, is on track for about 2-2.5." Exactly what last nights NAM and HRRR were saying.

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You all probably have seen also though what has happened further south. DFW and ATL were a lot wetter than originally anticipated. And slightly colder. Radar is apparently showing sleet in the metro but it's actually falling as very heavy, wet snow. With a layer of sleet underneath it. Just an absolute mess. Reminds me of what we got with last weekend's storm here.

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4 minutes ago, The Ole Bucket said:

You all probably have seen also though what has happened further south. DFW and ATL were a lot wetter than originally anticipated. And slightly colder. Radar is apparently showing sleet in the metro but it's actually falling as very heavy, wet snow. Just an absolute mess.

Atl had 2hrs of snow and then went to zr/ip at 10am.

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6 minutes ago, Ji said:

why is Ryan Mahue saying he got 5 inches of snow

Atlanta proper made it into a heavy fronto band that came through for those 2-3 hours dropping 1-2" rates of heavy wet flakes. Reports around the city of 2-4 inches which is genuinely impressive for that short window. They're back to ZR/IP now though 

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1 hour ago, WxUSAF said:

Soundings on the 12z run look MUCH better than any I’d seen to this point. Deeper saturated layer, colder aloft, and strong lift in a deeper DGZ. Only fly in the ointment is the strong winds at that level. But overall more supportive of something a bit better than 10:1 perhaps.

Everyone is crapping on the Kuchy maps because their ratios busted bad last time, but predicting ratios is part of the process of predicting snowfall...and sometimes you just get it wrong.  In this case the Kuchera maps for the most part are not predicting crazy high snowfall ratios and seem about what I would expect.  All the snowfall maps have flaws, the main one being they are only as good as the predictions they are based on.  

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39 minutes ago, clskinsfan said:

My son says its snowing in Charleston, SC right now. He moved there to get away from cold and snow. :)

Funny, my nephew lives in Charleston and said nothing yet and that it might be too warm lol.  He's on the outskirts, so not sure if that matters.

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13 minutes ago, psuhoffman said:

Everyone is crapping on the Kuchy maps because their ratios busted bad last time, but predicting ratios is part of the process of predicting snowfall...and sometimes you just get it wrong.  In this case the Kuchera maps for the most part are not predicting crazy high snowfall ratios and seem about what I would expect.  All the snowfall maps have flaws, the main one being they are only as good as the predictions they are based on.  

My issue isn't with Kuchera itself - it's a tool that attempts to boil down the prediction of ratios into an algorithm even though there are an exponential number variables that feed into that equation. It's simplistic and flawed (as is every other model) and should be taken with a grain of salt but I understand the intention and it at least makes an attempt at prediction. 

Therein lies the skill of the forecaster. We do see 'lazy' forecasters (present company excluded lol) giving it a bit too much weight.

 

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Snow on kinda sorta snow for our land in Sandy Level. Hard pack frozen snow/sleet/zr lol on our driveway. No give underfoot. My tractor has awesome traction but if the treads can't break that crust I may end up involuntarily downhill. Lol. Maybe way down hill hahaha. No seat belts or airbags on 1967 tractors 

 

20250110_115212.jpg

 

Eta: it's 26 degrees right now. No way we hit 33 forecast. No wasted flakes

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7 minutes ago, Bob Chill said:

Snow on kinda sorta snow for our land in Sandy Level. Hard pack frozen snow/sleet/zr lol on our driveway. No give underfoot. My tractor has awesome traction but if the treads can't break that crust I may end up involuntarily downhill. Lol. Maybe way down hill hahaha. No seat belts or airbags on 1967 tractors 

 

20250110_115212.jpg

 

Eta: it's 26 degrees right now. No way we hit 33 forecast. No wasted flakes

Nice tractor. Its snowing in Stony Gap right now. So its on its way to you soon. 

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10 minutes ago, Bob Chill said:

Snow on kinda sorta snow for our land in Sandy Level. Hard pack frozen snow/sleet/zr lol on our driveway. No give underfoot. My tractor has awesome traction but if the treads can't break that crust I may end up involuntarily downhill. Lol. Maybe way down hill hahaha. No seat belts or airbags on 1967 tractors 

 

20250110_115212.jpg

 

Eta: it's 26 degrees right now. No way we hit 33 forecast. No wasted flakes

Nice tractor Bob! I felt the same way about our driveway, shoveled the rest out on wednesday morning (that is semi-flat), was afraid the car would 'walk/slide' across it instead of drive thru or break it. 80% of my driveway looks like the steepness of your pic. 

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39 minutes ago, Terpeast said:

15z RAP shows 0.2+ qpf for both IAD and DCA by tomorrow. That's double from 03z.

HRRR smaller uptick but noise-ish

The RAP that showed 15” for north Maryland 6hrs out from the last event. Ya I’ll pass on ever looking at that model again. 

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