Warnings issued after 7.3 quake hits Tonga

The government of Tonga has issued a tsunami warning after an earthquake of magnitude 7.3 struck in the sea about 207km from the capital, and urged residents to move inland to higher ground.

The earthquake was at a depth of 24.8km that struck in the sea at about 207km east of southeast of Neiafu, according to the United States Geological Survey (USGS).

Tonga's meteorological service warned residents to move inland.

"An urgent tsunami advisory is now in force for all of Tonga due to a strong earthquake being felt in the Kingdom tonight. Please move inland immediately until further advised," it said on its Facebook page.

The Joint Australian Tsunami Warning Centre said on Friday night that there was no tsunami threat to the Australian mainland, islands or territories.