The Japan Meteorological agency reports a 7.4 quake in northeastern Japan, which hit at 11:32pm local time. USGS reports the same, about 60 miles from Sendai, Japan. Tsunami warnings, the first since the catastrophic March 11 quake and tsunami, are being issued throughout the region.
NHK TV is reporting that the nuclear safety agency says the nuclear power plants in the region have been shut down, but that workers at Fukushima Daiichi are being (or have been) evacuated just now. The area where this quake struck is the same region most affected by the March 11 disaster, so the earth there is generally unstable, and populations in the area are already vulnerable.