Superstorm93

I do agree that overall storm mode is still somewhat questionable for tomorrow, but the magnitude of effective shear we have available is pretty astounding. Even if things congeal a little too quickly during the course of the afternoon, we'll definitely have to watch for embedded strong mesocyclones. Just the thought of rain-wrapped tors with already poor visibility is pretty unnerving. (The overlay feature on weathernerds is pretty awesome by the way)

Some lingering questions about the tornado risk remain due in part to some conditional factors yet to occur. However, it appears the tornado risk may maximize in 2 corridors. First, a diurnally focused tornado risk (primarily supercellular) across northern LA into far southern AR vicinity between 3-9pm. A second area of potential concern may focus from northeast LA near the MS River east-northeast across central and into parts of northeast/east MS during the evening into the overnight. A mix mode of supercell/QLCS or hybridization of the two within a convective line are possible. Along with damaging gusts, strong tornadoes may also occur with a few of the most intense storms. While the pre-frontal, cellular convection should diminish overnight, a semi-organized band of storms -- with embedded rotating updrafts and continued severe/tornado potential -- will move across the central Gulf Coast states through the end of the period.

Very nice pattern in the LR Could be a start to another active end to the month.

All Day 7 risks so far... http://tweetimgs.pmarshwx.com/pmarshwx/20160421/20160421022044.png

Looks like we're going to be busy again soon..

Maybe some more action next week.

Honestly, I don't think they knew any better. Some of the folks in the videos barely knew they were looking at a tornado.

One of my favorites of all time... Who says that tornadoes can't cross large hills? The structure is simply incredible.

Imagine how much worse this could have been if the northern MDT risk had actually verified? All in all, good job by the SPC.

Video just put up a few days ago by James Spann.

The morning derecho that preceded the outbreak was pretty insane as well. Many people forget about that aspect of the outbreak, but there were some here that though that all the left over convection would damper the potential outbreak.

To think that the Moore/Bridge Creek Tornado was a confirmed 318mph (possibly stronger) beast and did not leave any evidence of ground scouring like the Philadelphia tornado did, is just scary... The appearance of the tornadoes of that day will ALWAYS stick with me for the rest of my life. The insane amount of motion in each one just showed how ridiculous the atmosphere was that day. I have seen dinky little horizontal vorts on EF3+ tornadoes before, but the vorts on these tornadoes MUST have been able to do some sort of damage with how fast they were rolling and how close to the surface they actually were. Does anyone know if the NWS surverys found anything about this?

I remember watching this thread from the day it was started until many days after the outbreak had actually ended. Amazing info and events are in here. Somehow, this needs to be saved for good along with the Joplin thread.

Excellent pictures. Thanks for the updates!

That's horrible. Here's the LSR from a few minutes after it happened:

This is pretty awesome. .

Crazy...

TWCBreaking TWC Breaking AP death toll has risen to 72, 58 of those being in Alabama alone. #severe

There must have been 30 TORE's issued today. Usually 5-12 a year.

Wow... That footage that TWC just showed of the Philadelphia tornado was incredible.

Probably some of the best tornado footage ever will come from this tornado.

I really liked how the SPC issued the PDS watches hours in advance today. They did an excellent job...