Sunrays like this are always exciting to see, but from a photographic standpoint this would have been improved with a skyline with a bit more interest - some trees or buildings, or even people, as the light would have allowed for strong silhouettes.
You've done a good job capturing the rays of light as they come through the clouds. A horizon with some more trees or texture might give this photo a little more impact....but when you see something striking like this lightplay, sometimes you just have to enjoy it where you are :-)
This image immediately made me think of the movie "Frailty." Nice capture of the rays; good color in the lower sky. The horizon seems tilted down to the right a bit. :)