Satellite imagery shows a massive ash cloud and shockwaves spreading from the eruption.
A tsunami warning has been issued for the islands of Tonga. Tsunami advisories have also been issued as far away as New Zealand’s North Island.
Waves crossed the shoreline of Tonga’s capital, Nuku’alofa, on Saturday, flowing onto coastal roads and flooding properties, according to CNN affiliate Radio New Zealand (RNZ).
Tonga’s King Tupou VI was evacuated from the Royal Palace after the tsunami flooded the capital, RNZ reported, citing local media reports that a convoy of police and troops rushed the monarch to a villa at Mata Ki Eua.
Residents headed for higher ground, RNZ said, as waves swept the palace grounds, waterfront and main street.
Ash was falling from the sky in Nuku’alofa on Saturday evening and phone connections were down, RNZ said.
The Hunga-Tonga-Hunga-Ha’apai volcano first erupted Friday, sending a plume of ash 20 kilometers (12.4 miles) into the air, according to RNZ.
A second eruption hit on Saturday at 5:26 p.m. local time, RNZ reported.
Australia’s Bureau of Meteorology said it recorded a tsunami wave of 1.2 meters (about 4 feet) near Nuku’alofa at 5:30 p.m. local time on Saturday.
The Pacific Tsunami Warning Center said tsunami waves of 2.7 feet (83 cm) were observed by gauges at Nuku’alofa and waves of 2 feet at Pago Pago, the capital of American Samoa, Reuters reported.
The volcano is located about 30 kilometers (18.6 miles) southeast of Tonga’s Fonuafo’ou island, according to RNZ, and about 65 kilometers (40 miles) north of Nuku’alofa.
In addition to the tsunami warning, Tonga’s Meteorological Services have issued advisories for heavy rain, flash flooding and strong winds in lands and coastal waters.
The nearby island of Fiji has also issued a public advisory asking people living in low lying coastal areas to “move to safety in anticipation of the strong currents and dangerous waves.”
A tsunami watch is in effect for all Samoan low-lying coastal areas, the Samoa Meteorological Service said. “All people living on low-lying coastal areas are advised to stay away from beach areas,” the agency said, and the public should refrain from visiting coastal areas.
A tsunami advisory has also been issued for coastal areas on the north and east coast of New Zealand’s North Island and the Chatham Islands, where “strong and unusual currents and unpredictable surges at the shore” are expected, according to New Zealand’s National Emergency Management Agency.
New Zealand’s official weather service said its weather stations across the country had observed “a pressure surge” on Saturday evening from the eruption.
Scientist Emily Lane, of New Zealand’s National…