3/17: FCST: Wednesday in TX, LA and AR

[mrobinson]

[Broken External Image]:http://img13.photobucket.com/albums/v38/mrobinson68135/31704.gif

I was curious about that myself..

 

[David Draun]

sorry to ask but what is a V notch? On the ground, would you be viewing a clear slot?

I hope I have my terminology right. Maybe I'm calling it the wrong thing?
the V-notch is what you see on a Nexrad image on the NE or E corner of a supercell. I think it is also known as a "flying eagle" Also, that above radar image looks kind of old. Here's a newer one.


http://www.srh.noaa.gov/radar/latest/DS.p1...0/si.ksrx.shtml

Note the concave shapes in the echoes ahead of the precip cores.

 

[Matthew Hatton]

Cheers guys. Have to say that last storm has pretty good radial velocity signatures on it and an apparent TVS, nothing showing to interupt inflow so this could have a chance of a tornado?

 

[David Schuttler]

spotters seeing wall clouds with lowering, should have went dang it. Muskogee county

 

[Aaron Kennedy]

V-notch is due to the updraft splitting the upper level flow. Flying or "screaming" eagle typically refers to a full bodied supercell on radar with a hook echo (on base reflectivity).

Aaron

 

[Gabe Garfield]

Awesome hook echo currently in NE Oklahoma...wouldn't doubt a tornado or two could form as LCLs lower and the low level jet increases. Just amazing!

Gabe

 

[David Schuttler]

[Broken External Image]:http://bamlock.web.aplus.net/sitebuildercontent/sitebuilderpictures/31704.jpg


This was looking SE from Tulsa about 6:15

 

[David Draun]

Spc finally had the MD out at about 6:16 CST, and get this, they were not even expecting to issue a weather watch. They just now are showing it.

And let me add, Nice pic!

 

[Joe Guerra]

There are now 5 confirmed mesos. My Swift WX is showing a nice j hook from cell ID A1. Good luck for those chasing and get a twister for me. :lol:

 

[Matthew Hatton]

even if there are no tornadoes there would surely be a gustnado or two looking at RV - its a bit messy there but certainly possible. Thanks for the info on flying eagles too Any further word from those spotters?

 

[David Schuttler]

MD on this was out by 3pm central time

 

[Kevin Scharfenberg]

A few notes:

Severe thunderstorm watch #28 was issued by SPC for northeast OK and northwest AR at 5:10pm effective til 11:00pm.

Saying a storm is "high-based" does not imply that the storm is not "surface-based". High-based, to me, means surface-based but with a very high LCL/LFC (whereas "elevated" to me, means the parcels lifted into the storm's updraft are not surface based). So the storms in eastern Oklahoma are high-based but surface-based storms.

The dewpoint depressions are still quite high (20+F) at 7:15pm, and so far the hook echoes and low level shear signatures have been transient and/or weak, so I'm not too pumped about the tornado threat.

Back to watching radar.

 

[Matthew Hatton]

radar shows those left splitting supercells rather nicely when you run the loop on Weathertap at the moment. Any more news from people in the field?

 

[David Draun]

A few notes:

Severe thunderstorm watch #28 was issued by SPC for northeast OK and northwest AR at 5:10pm effective til 11:00pm.

Saying a storm is "high-based" does not imply that the storm is not "surface-based". High-based, to me, means surface-based but with a very high LCL/LFC (whereas "elevated" to me, means the parcels lifted into the storm's updraft are not surface based). So the storms in eastern Oklahoma are high-based but surface-based storms.

The dewpoint depressions are still quite high (20+F) at 7:15pm, and so far the hook echoes and low level shear signatures have been transient and/or weak, so I'm not too pumped about the tornado threat.



Back to watching radar.

I'd like to thank the more seasoned weather watchers out there for correcting my earlier errors. I'm not an expert at this subject, but I learn more every day.

Perhaps tornadoes will not occur from these storms, but at least there's some good structure out there according to the spotters. Too bad it's getting dark now.

Dave

 

[John Gnuechtel]

Since all these people seem to be online talking about this event right now, I'd like to float a question...

Is it safe to assume that at least a few of the tiny storms to the southwest of the main cluster (best visible here http://www.srh.noaa.gov/radar/latest/DS.p1...0/si.ktlx.shtml) might be LP supercells?