Ele trical issues or tree issues I imagine is why!
More likely the latter - when I went out for a walk in my neighbourhood Saturday morning I saw a tree trunk blocking an entire side street in an area west of Glebe road. My sister also checked out my parents' former residence in Fairfax city that day and there were bajillions of big tree branches about.
[As far as electrical - per Dominion site it's down to 86k households without power, about half what it was at this time yesterday]