Issy seems to have Mythic headquarters in a tissy, here is Sanya's post on the Herald concerning the status of things:

Hey, everyone. If you're wondering what's making the East Coast a little sketchy, check http://www.weather.com/index.html. Our servers should not be affected, as they are buried approximately ten miles under Mordor. However, our office building's power supply is not nearly so secure. So, considering we lose power during a mildly amusing thunderstorm, we're going on the assumption we WILL be affected by the hurricane later today. Technical Support and Billing will be closing early at 3:00 PM EDT. Our in-game support will still be provided on a limited basis. Sorry for the inconvenience, and for y'all on the Carolina/Virginia coasts - be safe, people.