I don't have a GTW bag, as you call it (nice concept, btw). I have stuff in my truck already as part of my car kit that I suppose would work - water, food, blanket, etc.

I'm in militsry health care. If I'm at the clinic, I assume I'd stay until relieved. If I'm at home, I only go in if I'm called. Historically over the last few years, if there's an incoming storm or something, the clinic gets closed before it hits.

When I was in a hospital, the scheduled staff was expected to stay for up to 72 hours and pack accordingly if a storm was coming. I have yet to hear of extra folks being 'called in' for an event. I suppose it's possible though. Probably more likely in earthquake zones where it's less predictable.

Now, having said all that, I don't think that transportation will be an issue if something happens when you're already home. Chances are good that, if your vehicle is intact, you can get to work easily. Most people will stay off the streets.