Thanks for all of the replies.
I straightened the crop a little and it helped. Thanks. Processed in SNS HDR Pro. Three images. Went as easy as I could on the HDR effects. Started with the neutral preset. Used the masks function of SNS to bring up the highlights in the sky while keeping the sky darker (great feature). This increased the tonal separation in the sky - contrast adjustment do not have the same effect, much harsher. Also masked and adjusted the land to bring it into balance. This image required HDR because the suns disk is in the image. I had previously processed some of these images using Nik, Photomatix, fusion and others and comparing the results with SNS, they look like crap. Of course, I did not know as much then as now and I could probably do better now with those programs, so it is not a fair comparison.
Interesting example. The image posted below was taken 2min and 11 sec after the original posted image (I work fast). Only difference is that the camera was swung right by a small amount, note extra tree on right. Focal length (35mm equiv.) and camera position were the same. This is not an HDR but was done entirely in LR 4.1 as the suns disk is no longer in the image and the raw captured the full range. Note how the clouds have receded and are no longer as dramatic - it was a very fast storm front. Timing (and luck) is everything! I think I could get a little more from this image if I used SNS but it is not worth it.