For a few minutes now, never come across this before.

Literally non stop, very strange.

Alien invasion of just an unusual phenomena?

OP, are you sure it's not your belly?

It usually takes a little time, after you hear the rumbling for the lightning to come out.

Or it's the other way around?

Quite a bit of rumbling out here in Mae Rim too.... just wish the heavens would open up and give a a good downpour though. Humidity is crazy at the moment (As it has been for about a week)

May have to head out to the dam for a dip in the next few days if this keeps up. Could go to a local pool, but the dam is a good venue and fresh water beats chlorine in my book

Been around for a few years, heard thunder in quite a few countries but never a continual rumbling, 4-5 minutes or more.

But whatever, the rain has just arrived going to take off a few articles of clothing and dance around outside scaring the neighbours.

Lucky you..... no rain here and my neighbours would be scared off if I start stripping off outside! Maybe if I put a shower head onto the garden hose I could get away with it?

Nope not today, the missus want to water the garden..... bugger (Kiwi/Aussie slang for darn it).