smooth edge loop with Bezier Curve,
set up control point between 2~5 ,
slider to control dropoff distance.

p.s
I use mid point of edge loop for arc's tallest point. If you wonder why sometime arc is smaller then the others. To make initial arc taller, you can push the mid of edge loop higher before create the curve.

download from gumroad if you like to try
https://gumroad.com/l/arcDeformer

bug report to n2197472@hotmail.com

miauu's Spline Deformer allows you to manipulate rows of edges as if they were splines. The big advantage is that you can use Soft Selection to helps you on the modeling process.
Now all is up to you and your imagination.
Works with Editable Poly objects and Edit Poly modifier.

This is a commercial script for 3dsMax.
You can find more information here: http://miauumaxscript.blogspot.com/p/miauus-spline-deformer.html