If you're in New York City or another affected part of the country or if you're known to travel by plane a lot and your friends aren't sure where you are at present, do visit the Automated Check In page that Bill Shunn set up to report that you're okay. And if you aren't in an affected area, you may want to visit the page to see which of your friends have checked in so far.
I just woke up less than a half hour ago and I'm still reeling from the news and I'm still, of course, concerned for oh-so-many people I know. The check-in page has been a blessing so far 'cuz a lot of people I know and care about have checked in already. Here's hoping more do throughout the day.