Strong 7.7-magnitude earthquake rocked Papua New Guinea on Monday . Followed by 5.7-magnitude aftershock and generated 1.5ft-high tsunami . Pacific Tsunami Warning Center had said quake could cause about 50 kilometers waves . But it lifted its warning a few hours later after reporting smaller tsunami . No damage/injuries have been reported , officials said Monday afternoon . Local tsunami threat was issued in PNG but was no threat to Australia .
Strong 7.7-magnitude earthquake rocked Papua New Guinea on Monday . Followed by 5.7-magnitude aftershock and generated 1.5ft-high tsunami . Pacific Tsunami Warning Center had said quake could cause 10ft waves . But it lifted its warning a few hours later after reporting smaller tsunami . No damage/injuries have been reported , officials said Monday afternoon . Local tsunami threat was issued in PNG but was no threat to Australia .