Severe WX December 16-17 2019 Severe Weather Outbreak

[Bama Ravens]

Shelby County Sheriff’s confirm tornado on the ground.

 

[Evan]

Good call by BMX.

 

[KoD]

I couldn't decipher it on the super-res CC. But, on the older lower resolution CC it is definitely noticeable. Kind of odd.

I'm not sure exactly what algorithm they used to derive super-res detail but I imagine the source data is still the raw "lower resolution" initially. It's likely the higher resolution seeks to refine the data to make it sharper but could overcompensate and remove things that are important details. Kind of like a reverse jpg compression for images.

 

[skelly]

I'm not sure exactly what algorithm they used to derive super-res detail but I imagine the source data is still the raw "lower resolution" initially. It's likely the higher resolution seeks to refine the data to make it sharper but could overcompensate and remove things that are important details. Kind of like a reverse jpg compression for images.

I just thought it was too close to the radar site!

 

[Evan]

I'm not sure exactly what algorithm they used to derive super-res detail but I imagine the source data is still the raw "lower resolution" initially. It's likely the higher resolution seeks to refine the data to make it sharper but could overcompensate and remove things that are important details. Kind of like a reverse jpg compression for images.

I think this makes a lot of sense. I agree that the processing applied to the super-res product seems to filter out or distort more granular details in certain situations. It's akin to upconverting 720p content to 2160p. Detail will be lost even if the picture looks "better" in many cases.

 

[Kory]

We had multiple long track tornadoes yesterday. One in Louisiana was on the ground for over 60 miles. Another in Mississippi of similar length and two that began in Mississippi and continued well into Alabama. Storm mode doesn't matter. We can get damage, destruction, and death with QLCS embedded tornadoes much like supercellular tornadoes. Yesterday was a mix of both...

 

[Peter Griffin]

Looking at some of the damage pictures I wouldn't be surprised to see some tornadoes rated EF3 depending on construction in that particular area. What are y'alls thoughts?

 

[WesL]

Tornado Watch issued for portions of Alabama, Georgia and Florida.

 

[warneagle]

Confirmed tornado moving toward Ocilla, GA. Strong TVS and clear TVS. Might miss the town just to the north but it’s going to be a close call.

 

[JayF]

Confirmed tornado moving toward Ocilla, GA. Strong TVS and clear TVS. Might miss the town just to the north but it’s going to be a close call.

Is that just now? there is no Tornado Warning issued at this time.

 

[Gawxnative]

Confirmed tornado moving toward Ocilla, GA. Strong TVS and clear TVS. Might miss the town just to the north but it’s going to be a close call.

TDS with it now.. looking to split distance between Ocilla and Fitzgerald

 

[warneagle]

Is that just now? there is no Tornado Warning issued at this time.

There is now at least.

 

[Gawxnative]

And new Watch (705) out now until 7 pm.. SE Ga/NE Fla

 

[bjdeming]

From yesterday, here's the whole of that McComb tornado chase video that somebody shared here in a tweet:

 

[buckeye05]

Major damage being reported in Mystic, GA from this morning’s tornado.

 

[Equus]

Tornado near Demopolis rated prelim mid-end EF2... so we had fairly sizable tornadoes with that long tracked cell in Alabama for sure.

 

[warneagle]

Major damage being reported in Mystic, GA from this morning’s tornado.

Not surprising given how it looked on radar.

 

[Equus]

Laurel is preliminary low EF3, so we have broken the usual EF2 upper limit on Dixie outbreak DIs and surpassed most of the 2017 high risk days. NWS HUN says Lawrence County damage is at least EF2, so we're going to have multiple strong tornadoes on file from this. MDT was a bold call so early on but it verified phenomenally well.

 

[Lori]

Laurel is preliminary low EF3, so we have broken the usual EF2 upper limit on Dixie outbreak DIs and surpassed most of the 2017 high risk days. NWS HUN says Lawrence County damage is at least EF2, so we're going to have multiple strong tornadoes on file from this. MDT was a bold call so early on but it verified phenomenally well.

 

[CheeselandSkies]

I didn't see any radar signatures quite on the level of Lee County or Lawrence-Linwood yesterday, but a few of the tornadoes were probably at least briefly capable of EF4 damage had they been hitting something capable of registering those DIs at the time.