Hundreds of people were evacuated from their homes in Tonga Saturday when severe tropical cyclone Ula slammed into the tiny Pacific kingdom.

However, there were no casualties after Prime Minister Akilisi Pohiva declared a state of emergency before the storm hit "in order to prevent or minimize the loss of human life, illness or injury".

A 6.3-magnitude quake struck off the Pacific nation of Tonga late Friday, the U.S. Geological Survey said, but there was no tsunami warning.

The tremor hit at 11:07 pm local time (1107 GMT) 89 kilometers (55 miles) east-northeast of Hihifo, Tonga, and 235 kilometers southeast of the Samoan capital Apia, USGS said.

A strong 6.5-magnitude earthquake struck off the Pacific nation of Tonga on Saturday, the U.S. Geological Survey said, but there was no immediate tsunami warning or reports of significant damage.

The undersea quake hit 71 kilometers (44 miles) northeast of the Tongan capital Nuku'alofa at a shallow depth of 10 kilometers, the USGS said.

The most powerful cyclone ever to slam into the South Pacific tourist destination of Tonga has destroyed villages, flattened trees and left at least one person dead, officials said Sunday.

Up to 70 percent of houses and buildings in the central Ha'apai islands group, which is home to about 8,000 people and bore the brunt of Cyclone Ian, were damaged or destroyed.

A shallow 6.4-magnitude quake struck off the Pacific nation of Tonga early Sunday, the U.S. Geological Survey said, but no tsunami warning was issued.

The quake hit 345 kilometers (213 miles) northeast of the capital Nuku`alofa at a depth of 10 kilometers.

Flash floods and power cuts hit the Samoan capital Apia Thursday as Tropical Cyclone Evan lashed the Pacific island nation with high winds and heavy rain, witnesses said.

Meteorologists said the category two cyclone, packing wind gusts exceeding 120 kilometers per hour (75 mph), made landfall in the early afternoon and was expected to intensify after moving out to sea.

A strong 6.4-magnitude earthquake struck off the Pacific nation of Tonga on Saturday, U.S. seismologists said, but there were no immediate reports of damage and no tsunami warning was issued.

The quake happened at 11:08 PM (1008 GMT) 78 kilometers (49 miles) from the town of Neiafu, on the south coast of the island Vava'u, at a depth of about 130 kilometers (80 miles), the U.S. Geological Survey (USGS) said.

Tongan King George Tupou V has undergone successful surgery in Los Angeles to remove his right kidney after a "significant" tumor was found, local reports said Thursday.

The Pacific island monarch went under the knife at the Cedars-Sinai Medical Center and is expected to return home on Saturday, the Mantangi Tonga website said, adding that the operation took place last month.