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December 12-14, 2022 | Significant Tornado Outbreak


ClicheVortex2014

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  • Meteorologist

In this case you have to keep in mind what the radar beam is trying to deal with. Especially a few scans ago, it was being obliterated by heavy rain so the storm looks really anemic. Unless this cell collapsed, we should see the cell re-emerge as it passes the radar.

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Just now, ClicheVortex2014 said:

In this case you have to keep in mind what the radar beam is trying to deal with. Especially a few scans ago, it was being obliterated by heavy rain so the storm looks really anemic. Unless this cell collapsed, we should see the cell re-emerge as it passes the radar.

Yeah as it passed the radar I knew we wouldn't be able to see much, I should've specified that I saw nothing that would suggest tornado-genesis as it approached radar when you would think we'd see ramping up velocities, just goes to show that they're dropping quick and unexpectedly today!

Edited by Neoncyclone
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Mid-level WV does a pretty good job at showing some of the struggles that the southern cells have been facing. Updrafts will continue to weakly strengthen as long as that dry air continues to sneak through SE TX. It'll be something to keep an eye on.

Looks like the rest of the enhanced risk is clear of the dry air entrainment, at least for now. 

I work a 4am-12pm tomorrow so I'm gonna miss quite a bit of this evening's event.

CODNEXLAB-GOES-East-subregional-Dixie-09-23_21Z-20221213_map_-24-1n-5-100.gif

Edited by ClicheVortex2014
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  • Meteorologist
29 minutes ago, ClicheVortex2014 said:

Watching anything that comes from SW LA. Especially that "squall" NW of Lake Charles

image.png.951d796084046a218c5fa161a46ee268.png

The aforementioned "squall" (line segment would've been more appropriate) is starting to look more supercellular at least on reflectivity. We'll see if it can win the battle against dry air. A couple other cells are trying to get going.

image.png.b221303d43b7a1db17c35e977fccd112.png

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  • Meteorologist

Renewed action should come later this evening with cells that already exist, per SPC. After I'm asleep probably

image.png.e65e2400d55da23f6268675683de7ddd.png

  Mesoscale Discussion 2022
   NWS Storm Prediction Center Norman OK
   0706 PM CST Tue Dec 13 2022

   Areas affected...Central Louisiana and far southwest Mississippi

   Concerning...Tornado Watch 583...

   Valid 140106Z - 140300Z

   The severe weather threat for Tornado Watch 583 continues.

   SUMMARY...The risk for supercells and a few tornadoes is expected to
   continue across WW583 through the next couple of hours. Additional
   development/intensification across central and southern LA is
   expected later this evening.

   DISCUSSION...Across WW583, persistent showers and thunderstorms have
   displayed intermittent rotation and brief organization over the last
   several hours. The environment remains favorable for supercells with
   upper 60s to low 70s F surface dewpoints supporting 1000-2000 J/kg
   of MLCAPE. In addition, strong 0-1 km bulk shear in excess of 30 kt
   evident on SPC mesoanalysis is supportive of low-level mesocyclones
   with a risk for tornadoes with the more established storms.

   While so far organization within the warm advection confluence bands
   farther east has been limited, stronger forcing for ascent is
   expected to arrive from the west in the next couple of hours beneath
   a 40-50 kt low-level jet. Recent HRRR runs suggest additional warm
   sector development/intensification is possible across mainly the
   eastern half of WW583 this evening. With strong shear and sufficient
   buoyancy forecast to persist after dark, the risk for supercells and
   a few tornadoes is expected to continue.

 

Edited by ClicheVortex2014
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1 minute ago, ClicheVortex2014 said:

Renewed action should come later this evening with cells that already exist, per SPC. After I'm asleep probably

image.png.e65e2400d55da23f6268675683de7ddd.png

  Mesoscale Discussion 2022
   NWS Storm Prediction Center Norman OK
   0706 PM CST Tue Dec 13 2022

   Areas affected...Central Louisiana and far southwest Mississippi

   Concerning...Tornado Watch 583...

   Valid 140106Z - 140300Z

   The severe weather threat for Tornado Watch 583 continues.

   SUMMARY...The risk for supercells and a few tornadoes is expected to
   continue across WW583 through the next couple of hours. Additional
   development/intensification across central and southern LA is
   expected later this evening.

   DISCUSSION...Across WW583, persistent showers and thunderstorms have
   displayed intermittent rotation and brief organization over the last
   several hours. The environment remains favorable for supercells with
   upper 60s to low 70s F surface dewpoints supporting 1000-2000 J/kg
   of MLCAPE. In addition, strong 0-1 km bulk shear in excess of 30 kt
   evident on SPC mesoanalysis is supportive of low-level mesocyclones
   with a risk for tornadoes with the more established storms.

   While so far organization within the warm advection confluence bands
   farther east has been limited, stronger forcing for ascent is
   expected to arrive from the west in the next couple of hours beneath
   a 40-50 kt low-level jet. Recent HRRR runs suggest additional warm
   sector development/intensification is possible across mainly the
   eastern half of WW583 this evening. With strong shear and sufficient
   buoyancy forecast to persist after dark, the risk for supercells and
   a few tornadoes is expected to continue.

 

I've had terrible insomnia the last couple days, so i'm sure i'll be posting gifs of CC drops if they happen

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Confirmed near Farmerville LA.

Quote
Severe Weather Statement
National Weather Service Shreveport LA
829 PM CST Tue Dec 13 2022

LAC111-140300-
/O.CON.KSHV.TO.W.0106.000000T0000Z-221214T0300Z/
Union LA-
829 PM CST Tue Dec 13 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CST FOR
NORTHEASTERN UNION PARISH...

At 828 PM CST, a confirmed tornado was located 2 miles north
of Farmerville, or 18 miles southwest of Huttig, moving northeast
at 40 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows, and vehicles will occur.  Tree damage is
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Union Parish, including the following locations...
Haile, Linville and Marion.

 

 

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That confirmed warning just updated saying mobile homes destroyed in Farmerville.

Quote
Severe Weather Statement
National Weather Service Shreveport LA
848 PM CST Tue Dec 13 2022

LAC111-140300-
/O.CON.KSHV.TO.W.0106.000000T0000Z-221214T0300Z/
Union LA-
848 PM CST Tue Dec 13 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CST FOR
NORTHEASTERN UNION PARISH...

At 847 PM CST, a severe thunderstorm capable of producing a tornado
was located 8 miles south of Huttig, moving northeast at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation. Numerous reports of trees and
         power lines downed with some mobile homes destroyed have
         been received near Farmerville with this storm.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows, and vehicles will occur.  Tree damage is
         likely.

Locations impacted include...
Marion, Haile and Linville.

 

 

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