ASAP (Ida): Do I need internet to use Storyline?

Hi! TS Ida is going to be sideswiping my area tomorrow, and I'm expecting to possibly lose power and internet. We have a generator, but that won't help with internet. I'm trying to line up my to do list in the event I lose internet tomorrow, but it just occurred to me that I might have a problem. Every now and then, I get an error when launching SL that I need to be logged in to Articulate in order to use it. Is it true that I need to have internet access and be logged in, in order to use SL? Is there anything I can do to ensure I can still use SL, even if I lose internet? If I need to be on the internet to use SL, I'm going to be out of luck. 

I appreciate any answers or advice today or early tomorrow, if a knowledgeable someone can provide it! Thank you in advance!

Lisa