Does it really matter why the power loss happened? There are a lot of things that can cause the power to go out in an area. My power company can't keep the power on for more than a few weeks at a time (though typically very brief, the outages last just long enough to shut down all my electronics). Sure, the skies were clear in Boston. All the tornadoes were hundreds of miles away. But that doesn't mean the power can't go out for other reasons. I checked the national grid status online when the game went down and there were reports of outages in the Boston area.