Writing in the zone

I'm writing in the middle of a thunderstorm.  There's a coconut palm between me and the thrashing grey ocean, and huge heavy branches are tearing off and crashing to the ground.  Coconut are thudding to earth.  And I'm in my study, tapping on my keyboard, lost in another world.  The wilder the wind gets, the more my characters connect with what's happening to them, as if my anxiety level about damage is leaking into their reality, affecting their nerves.  And things are happening in the...