One caveat though if you don't mind me suggesting this. The clouds in image #1 seem to have some blown out values. I think this image dramatic as it is already could be taken to another level by blending a reduced exposure iteration of the same frame (assuming you did not bracket your exposures in which case you can do some HDR blending) to compensate for the clouds blown highlights to match the rest of the scene. Otherwise very cool stuff.
Falls Creek Falls?