The magnitude of Friday's quake has been upgraded to 9.0.
Fuji News Network reports that 3,000 persons have been confirmed dead or missing.
The chief of the Miyagi Prefectural Police says that the number of dead in his prefecture will likely reach the tens of 1000s.
To reduce pressure in the reactor core, radioactive steam was released from Reactor 3 at the troubled nuclear plant in Fukushima. A nuclear power expert analyzing the situation at the plant for Fuji News rates yesterday's explosion of part of Reactor 1 a "5" (on the IAEA's scale of 6), in other words, between Chernobyl and Three Mile Island in criticality. Evacuation has been ordered for those within a radius of 20 km.