For a live-sound design production of "King Lear" we constructed a rain machine that consisted of a long, narrow (5 foot by 7 inch) wooden box on a teeter-totter fulcrum. The box had dozens of nails sticking out of the bottom and we filled it with dried beans. As you rocked the seesaw back and forth you could get more or less continual rainfall and also ...
A couple of years ago I had the pleasure of watching Encounters at the end of the world at the cinema. The recordings of seals and other marine life in that film are really amazing, and an amazing experience in the cinema
Most of the sounds are like sawtooth LFOs - from high to low.
In a sense though, many natural phenomena ...
Michael Raphael (Rabbit Ears Audio) has been recording some stuff. He's even posted sounds already:
He also posted some pics of his DPA 4060's attached to his windows.
I live in central Maine and while we were not hit with the bulk of the storm, I was able to get some super consistant heavy rain recordings as well as some fun internal bits. Some of my best from last week are a storm gutter inside the building I work in.
Check out this blog about the dispersion of sound waves in ice sheets:
If you listen to the recording at 35s in particular they captured an awesome sound which may be the kind of thing you're after.
They also share their recording technique which is nice.