Right Movers

[Caleb Routt]

Okay so how does a supercell become a right mover? Been looking for the awnser everywhere!

 

[Caleb Grunzke]

The direction a supercell moves is dependent on the vertical wind shear profile. A supercell can develop two separate updrafts with opposing rotations, one cyclonic (counter-clockwise) and the other anti-cyclonic (clockwise). A clockwise curved hodograph will favor the vertical motion on the right-flank (cyclonic updraft) of the supercell while having the opposite effect on the left-flank (anti-cyclonic updraft). When the storm splits into two, the right-mover will become dominant while the left-moving cell will die off.

I recommend you going through "A Convective Storm Matrix: Buoyancy and Shear Dependences" (https://www.meted.ucar.edu/training_module.php?id=22#.VKmABSvF-Sp) on the MetEd UCAR site. This helped a lot with learning about how different types of hodographs will affect supercells.

If someone else wants to give a more detailed explanation, please do so.

 

[Brian G]

It's a fairly complex topic. I recommend reading Mesoscale Meteorology by Paul Markowski and Yvette Richardson. It can be had for less than $70 on Amazon. It will explain the dynamic pressure perturbations (both linear and nonlinear) that contribute to updraft longevity and propagation. It will explain how different hodograph shapes cause deviant left and right motions. To fully appreciate what happens in a mesocyclone you have to understand the mathematics, but even if math isn't your thing then you'll still get a lot out of the book. Oh, and I second the MetED module that Caleb posted.

 

[Jeff Duda]

Also try a search of this forum. I almost 100% guarantee this subject has been covered in previous posts from years prior.