One I remember well is a trip away with the boys over on Ausvarmint - we camped on a property down south and set up near a tail end of a dam, anyway all was well until late afternoon when the heavens opened up and what can only be called a severe storm cell parked it's ass right on top of us and let rip for about 6-8hrs straight.
We were camping near a dry creek bed which ran into the dam and it wasn't long before that sucker was flowin like mad, it was up about a 3/4m in a hour or so and rising fast we made for a restless night to say the least but that wasn't as bad as the Niagara Falls we had flowing off the back of the mountain we were camped down the bottom of which decided it needed to flow straight through the middle of our tent
I spend the night bailing the thing out as it had about 6" of water in it none stop, the air bed was saturated as were we (not a stitch of dry clothes anywhere, the daughter bailed out and into the car to sleep, we spent the night bailing and tying down the tent to secure it from the severe winds that decided to join the part along with the torrential rain and awesome thunder and lightning show.
She was one wild night that won't be for gotten in a hurry and we were glad to see the sun out the next day which had everything and everyone dry soon and we were back into having shooting fun.