A second earthquake of magnitude 6.4 has struck southern Japan in the same area affected by another quake earlier.

A weakened typhoon slammed into Japan, leaving one person dead, more than 30 injured and prompting evacuation alerts for some 1.1 million residents near swollen rivers.

A powerful earthquake hit Tokyo and nearby areas shortly after dawn today, halting trains and forcing two nuclear reactors to shut down for safety checks.

A powerful earthquake sent a two-metre high tsunami crashing into a beach resort on Indonesia's Java island today, killing at least six people and causing extensive damage to hotels, restaurants and homes, police and witnesses said.