Thank you guys, I am OK.
The explosion happened two stops from where I have to change line. Trains move now exactly from my home in the North of Moscow (Rechnoy Vokzal station on green line) to Novokuznetskaya where I change lines OTW to work. The whole Southern part of green line is cut off, meaning that huge "sleeping" districts are almost isolated from the center.
I stayed at home untill lunch time, thought there will be crowds in an underground. Surprisingly the underground is nearly empty, and there are hundreeds of Militia warriors, as far as I saw - not from regular line underground militia but from city departments.