SYDNEY, March 5 (Xinhua) -- A tsunami warning for Australia' Norfolk Island remained in place on Friday afternoon, following a series of earthquakes northeast of New Zealand.
Norfolk Island is around 1,450 km east of the Australian mainland and roughly 1,100 km north west of New Zealand's northern tip.
Tsunami activity was recorded at Norfolk Island on Friday morning, according to Australia's Bureau of Meteorology (BOM), with a sea level gauge registering a 64 centimeter surge.
"Tsunami waves are more powerful than the same size beach wave. It is the power rather than the height that makes tsunami waves so destructive, hence dangerous to swimmers and boaters," the BOM said in a statement.
"There could be many waves and the first wave may not be the largest. The threat is expected to persist for several hours."
While evacuations were deemed unnecessary for residents of Norfolk Island, people were advised to get out of the water and move away from the immediate water's edge.
"Norfolk Island residents are strongly advised to stay out of the water and move away from the immediate water's edge of beaches, marinas, harbours, coastal estuaries and rock platforms."
The Joint Australian Tsunami Warning Centre said there was no current tsunami threat to the Australian mainland.