Late April severe weather risk ~Mon thru next Mon 4/24-5/01

[SmokeEater]

Structure damage in Utica with this same cell.

[mob1]

The line east of Baton Rouge had many little areas of embedded rotation as well as strong straightline winds, so they just issued a massive tornado warning for the entire line. 

[downeastnc]

Bolton looks to have took direct hit...

[JasonOH]

21 minutes ago, mob1 said:

I don't think you can pause a loop, I just kept taking screenshots of the loop till I had the right one (I'm just primitive that way) 

Hold down the play button and you can select which frame you want to see.

[mob1]

2 minutes ago, JasonOH said:

Hold down the play button and you can select which frame you want to see.

Thanks a lot, that's very useful. 

[JasonOH]

I don't think I've ever seen a blanket tornado warning like this.  Just shows how volitile the environment is this morning.

[Drz1111]

The semi-regular spacing of the spins along the gust front look like a waterspout line.  I'd bet those are landspout-like structures, but strong / deep enough to show up on Doppler. Very cool.

[downeastnc]

12 minutes ago, JasonOH said:

I don't think I've ever seen a blanket tornado warning like this.  Just shows how volitile the environment is this morning.

Yeah I guess they feel they spin up so fast they wont have time to wait till they see the rotations on scans so warn everyone....they do that here in NC when we get landfalling canes, as the outer bands rotate in they usually blanket warn them for tornados since they form and die often in the time it takes the radar to scan once or twice. 

[SmokeEater]

Hold down the play button and you can select which frame you want to see.

Thanks man, I didn't know that either. I would always do the same thing he did, lol.

[MattPetrulli]

We could a decent amount of tornadoes today, a lot of shear present. Still have the second round of storms to deal with. 

[1900hurricane]

27 minutes ago, JasonOH said:

I don't think I've ever seen a blanket tornado warning like this.  Just shows how volitile the environment is this morning.

It's certainly not a common occurrence. I've seen it done on occasion with derechos as well.

[SmokeEater]

I can see why they blanket warned, there's little spinups all over the line.

[SmokeEater]

Structural damage in Flora, MS from a tornado, big TDS at the time. It's nuts how all of these what you would think are quick spin ups, are putting down decent tornadoes.

[downeastnc]

nice curley cue near Durant MS, pretty intense there on velocity scans regardless of whether there is a tornado or not.....then up north of Lexington just west of Durant there is a nasty little spin up.

[1900hurricane]

12 minutes ago, SmokeEater said:

Structural damage in Flora, MS from a tornado, big TDS at the time. It's nuts how all of these what you would think are quick spin ups, are putting down decent tornadoes.

Yeah, the low level shear is pretty hellacious once again with ESRH running over 400 m**2/s**2 in proximity with the line, which in the presence of adequate to good mixed-layer shear, is probably helping these suckers spin up real quick despite being on the line.

 

 

[Tater Tot]

Could it be possible that the debris is more from straightline winds and the spinups are just lofting it high enough to be detected on radar? Sounds weird, but TDS from spinups aren't exactly common themselves.

 

Edit: Now that I think about it, this seems similar to the mini-outbreak in Kansas on May 19, 2012. They formed from a line and seemed very landspout-ish.

[Quincy]

4 minutes ago, 1900hurricane said:

Yeah, the low level shear is pretty hellacious once again with ESRH running over 400 m**2/s**2 in proximity with the line, which in the presence of adequate to good mixed-layer shear, is probably helping these suckers spin up real quick despite being on the line.

Higher-end shear in the lowest kilometer with 0-1km shear in excess of 35 knots, to as much as ~50 knots per mesoanalysis in Mississippi.

[Chinook]

9 tornadoes on the SPC storm reports web page and it's only 11:54AM Eastern. This is kind of a bust in the opposite direction

[SmokeEater]

Tornado watch for E MS and W AL now, includes Tuscaloosa and Birmingham.

[Quincy]

8 minutes ago, Chinook said:

9 tornadoes on the SPC storm reports web page and it's only 11:54AM Eastern. This is kind of a bust in the opposite direction

It would have been pretty wild if the large scale pattern over the past few days didn't produce something. It just looks like most of the production will end up being east of I-35, but hey, that's really not climatologically unusual at all. 

[Hoosier]

3 hours ago, JasonOH said:

I don't think I've ever seen a blanket tornado warning like this.  Just shows how volitile the environment is this morning.

I think it comes down to office preference. Not everyone will do it and perhaps most won't.  I remember IND issuing blanket warnings that spanned like 100 miles from north to south on 4/19/2011.

[weunice]

2 minutes ago, Hoosier said:

I think it comes down to office preference. Not everyone will do it and perhaps most won't.  I remember IND issuing blanket warnings that spanned like 100 miles from north to south on 4/19/2011.

I live near Baton Rouge and from having gone to multiple spotter training events with the New Orleans office it is important to recognize that many significant tornadoes here were not even close to evident one frame, there destroying homes the next and gone the next after that. One of our mets worked in the plains offices for a while and he said it is really hard to get a handle on when to issue tornado warnings here because we get a lot in the line, during hurricanes or in otherwise vast walls of rain. FWIW it is the first time I recall them issuing a warning like that in the many years I have lived here. 

[cstrunk]

Here is the latest from NWS Fort Worth/Dallas on yesterday's tornadoes from Eustace-Canton-Fruitvale-Emory. Tornado #4 could be approximately 51 miles long and have been on the ground for 1 hour and 47 minutes. Tornado #3 was also a long-track tornado on the ground for approximately 40 minutes. On a day when no one expected anything besides brief tornadoes. Wow. It will be interesting to see what the ratings of these tornadoes are. That is a lot of ground to cover so it may take a while to complete those surveys.

[Calderon]

Preliminary indications of at least EF3, potentially higher, for the main Canton tornado (#4).

[1900hurricane]

 

[Natester]

1 minute ago, 1900hurricane said:

 

That looks at the very least very high end EF3 (if the home was poorly anchored to the foundation).

[weatherextreme]

Monday was upgraded to enhanced

 

 

 

[Jim Martin]

The storm system responsible for all the fuss the last few days. From the Goes-16 visible satellite.

[Calderon]

Eustace and Canton tornadoes both just confirmed as preliminary EF3s, the latter being subject to more in depth review.

 

[aggiegeog]

Possible additional tornado in NW Smith Co. north of Lindale on the property adjacent to my family's. One barn destroyed and a mature grove of pecan trees leveled. Luckily the house in the middle of it was undamaged.