As for Crepuscular Rays, the following two shots were in my backyard (not near an ocean) and happened suddenly. What took place was a very strange collection of short rays (in a row) that looked somewhat like buildings and then the sky opened up revealing iridescent clouds and Crepuscular rays slicing the clouds apart outward (they are actually parallel) while casting long shadow like fingers across the roof of the sky. I've seen small examples of Crepuscular rays here and there, mostly on the coast, yet not exactly like this. I looked up what these rays exactly signify, which is as follows:
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/opt/air/crp.rxml