4/10/09 NOW: LA, MS, AL, GA, TN, KY

[Dave Gallaher]

I've been watching a long-lived supercell that has tracked along I-20 from Shreveport (where I think it's the same cell that caused damage there, but can't be certain from my GRL3 loop). It has been TOR-warned through a minimum of five counties so far, and is on a nearly due-east heading that will take it north of Jackson if it holds together. 1:31am velocity on the 0.5 tilt shows a 105-knot couplet. Damage has been reported in Caddo, Bossier, Webster, Lincoln and Ouachita parishes.

This cell has been tail-end Charlie for a while, and will run into slightly backed surface winds in the DGX region.

As I type this, TOR Watch # 130 has gone up for counties immediately south and west of Huntsville...

 

[Chip Redmond]

I probably should have started a new now thread instead of posting in yesterdays since it was after midnight :/. Oh well.

You are correct, that is the same exact storm that did damage in Shreveport. I just can't stop watching it keep on keeping on and am amazed by its longevity. It seems to be just out front/along of a weak surface vort max. What was a more stable air mass over MS is beginning to rapidly destabilize with decreasing LI's, decreasing LCL's, CAPE increasing and dewpoints although not as high as they were in LA are increasing into low 60s. I now don't see anything slowing this storm down for at least another hour or two...


Chip

 

[Jacob Ferden]

A line appears to be gradually filling in from the north, with additional development to the south. Will be interesting to see how the lone cell reacts to this...

 

[Dave Gallaher]

If I'm figuring correctly, the first damage reports from this cell are straight line winds in Harrison County, TX at 0240Z. That means that the storm has been ongoing for at least five hours. Latest radar view shows it starting to stringbean out, so it may be fading--or just cycling.

EDIT: After such a long history of independence, this cell is finally losing its rudder and is beginning to track more to the northeast. ATTM it looks like the forming line is going to outrun it, so it may wither up--looks like it will be nothing but a puddle-maker by the time it crosses I-55.

A most impressive cell--it should precipitate some earnest papers and reports.

Now it's time for sleep before the first round gets here--but I just heard thunder...

 

[Jeff Piotrowski]

PDS Watch TN-AL-GA

SPC just issued a PDS Watch for TN-AL-GA.

Looking at the SPC meso page looks like tornado parameters are in place ahead of the line of storms.

Based on radar and surface obs could see some long track tornados today.

Huntsville Stations Streaming live.



http://www.waaytv.com/

http://www.whnt.com/

http://www.waff.com/

 

[Brad Nelson]

Very impressive shear profiles off the forecast soundings for this afternoon and also going off the 12Z observed sounding data from this morning, especially in northern AL into northern GA. Quite the day we're talking about here.

 

[Will Tinder]

WKRN out of Nashville is showing a traffic cam footage of large tornado on the ground in Mufreesboro, literally about 3 minutes ago. Crossed I-24.

 

[Steve Polley]

Tornado Emergency Issued for Murfreesboro TN

Very strong couplet near the city of Murfreesburough, TN with a tornado emergency issued.

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1238 PM CDT FRI APR 10 2009

TNC015-149-189-101815-
/O.CON.KOHX.TO.W.0032.000000T0000Z-090410T1815Z/
CANNON TN-RUTHERFORD TN-WILSON TN-
1238 PM CDT FRI APR 10 2009

...TORNADO EMERGENCY FOR MURFREESBORO AND NEARBY LOCATIONS...

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM CDT FOR SOUTH
CENTRAL WILSON...RUTHERFORD AND NORTHWESTERN CANNON COUNTIES...

AT 1236 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED 5 MILES WEST OF MURFREESBORO...MOVING NORTHEAST
AT 30 MPH.

THE TORNADO WILL BE NEAR...
MURFREESBORO BY 1245 PM CDT...
WALTERHILL BY 1255 PM CDT...

 

[Brad Nelson]

Nearly every storm in TN is going tornado warned now. The cells near Murfreesboro and south of Lewisburg are looking very impressive with couplets at this time.

 

[Chris Hayes]

Tornado reported north of Hopkinsville, Kentucky.

 

[Andrew Stoller]

http://www.newschannel5.com/

Large damaging tornado with houses destroyed being reported in Tennessee. Didn't get the county.

 

[Will Tinder]

I hope the radar is wrong, but it looks like the Lewisburg couplet went right over town. Almost every storm seems to be rotating.

EDIT - Rutherford County is where houses were reported destroyed, according to WKRN.

 

[Mark Farnik]

The cell in Itawamba Co., MS is rapidly developing a nasty looking hook and will be crossing into Franklin Co., AL shortly, with the circulation passing near Russelville in the next half hour or so.

Also, the cell in central Colbert/southern Lauderdale Co. AL is also developing a strong couplet and will be affecting the Muscle Shoals/Florence vicinity shortly.

 

[Kurt Hulst]

I am really kicking myself for sitting this one out today. I just took a look at the radar and warnings the whole line of storms is tornado warned from north TN, south to MS and Soon AL borders with no breaks in warning coverage. The cell south of Crofton KY has had tornadoes being reported on the ground.

I am noting that the time of post was 2:04 PM EDT. The time stamp shown on the post is 11:54 am. looks like a glitch and may fix itself but found it odd

 

[Mark Farnik]

The Murfreesboro cell is completely hooked out - GR3 currently showing 115 kts of g2g shear. I'm betting the tornado that struck Murfreesboro is still on the ground, chewing up the Tennessee countryside...