This weekend is my cousin's wedding. It appears our travel will miss being affected by Florence, although by flying through Atlanta, we could be flying through inclement conditions on the way home.
I found a link flightaware.com that tracks delayed and canceled flights.
I'm making progress on the How Far is Mars website. I'm still dealing with the math and calculus to calculating relative velocity and acceleration. My test program had been doing it wrong, so I'm correcting the algebra.