* Tonga's outer islands suffered catastrophic damage
* Buildings destroyed or washed away, official toll two
* Tonga navy says 5-10 metres (15-30 feet) waves hit island
* Airport closed, hampering international aid efforts
* Australia, NZ to send aid (Updates with Japan ready to offer aid, comment from Tongan artist)
By Kirsty Needham and Praveen Menon
SYDNEY/WELLINGTON, Jan 18 (Reuters) - Tonga's small outer islands suffered extensive damage from a massive volcanic eruption https://www.reuters.com/business/environment/impact-assessment-aid-efforts-underway-world-responds-tonga-tsunami-2022-01-16 and tsunami, with an entire village destroyed and many buildings missing, a Tongan diplomat said on Tuesday.
The confirmed death toll is two but pictures taken by New Zealand Defence Force (NZDF) reconnaissance aircraft showed "alarming" scenes of a village destroyed on Mango island and buildings missing on nearby Atata island, said Tonga's deputy head of mission in Australia, Curtis Tu'ihalangingie.
"People panic, people run and get injuries. Possibly there will be more deaths and we just pray that is not the case," Tu'ihalangingie told Reuters.
Tonga is expected to issue formal requests for aid soon but in the meantime New Zealand said two ships, HMNZS Wellington and HMNZS Aotearoa, had set off with water supplies, survey teams and a helicopter.
Tonga police told the New Zealand High Commission that the death toll from Saturday's eruption and tsunami was two but with communications in the South Pacific island nation cut, the true extent of casualties was not clear.
Australia's Minister for the Pacific Zed Seselja said Tongan officials were hoping to evacuate people from the isolated, low-lying Ha'apai islands group and other outer islands where conditions were "very tough, we understand, with many houses being destroyed in the tsunami".
The United Nations had earlier reported a distress signal was detected in Ha'apai, where Mango is located. The Tongan navy reported the area was hit by waves estimated to be 5-10 metres (15-30 feet) high, said the U.N. Office for the Coordination of Humanitarian Affairs (OCHA).
Atata and Mango are between about 50 and 70 km from the Hunga Tonga-Hunga Ha'apai https://graphics.reuters.com/TONGA-VOLCANO/mopanwordva/Tonga-Volcano.jpg volcano, which sent tsunami waves across the Pacific Ocean when it erupted with a blast heard 2,300 km (1,430 miles) away in New Zealand.
Atata has a population of about 100 people and Mango about 50.
"It is very alarming to see the wave possibly went through Atata from one end to the other," said Tu'ihalangingie.
The NZDF images, which were posted on a Facebook site and confirmed by Tu'ihalangingie, also showed tarpaulins being used as shelter on Mango island.
Briton Angela Glover, 50, was killed https://www.reuters.com/world/briton-killed-tonga-tsunami-she-tried-rescue-dogs-2022-01-17 in the tsunami as she tried to save the dogs she looked after at a shelter, her brother said.
CLEARING THE RUNWAY
A thick layer of ash blankets the islands, the aerial images provided to Tonga by New Zealand and Australia showed.
The archipelago's main airport, Fua'amotu International Airport, was not damaged but heavy ashfall is preventing full operations, hampering international relief efforts.
The U.N. humanitarian office said Tongan officials had said that clearing the runway was being done manually with the earliest opening on Wednesday.
People on the west coast of the main island of Tongatapu had been evacuated because of "significant damage", OCHA said, while government ministers had broadcast warnings against price gouging amid worries about shortages of supplies.
Australian Foreign Minister Marise Payne said C-130 aircraft from Australia could deliver humanitarian assistance including water purification supplies, while the HMAS Adelaide, which would take five days to get to Tonga, was ready to take engineering and medical teams and helicopter support.
Japan said it hoped to help quickly and would consult others in the region, including Australia and New Zealand.
"The impact not just of the inundation, but of the extraordinary volume of ash which is covering everything, plus the communications issues, of course, makes this very difficult," Payne said.
Scientists say the eruption could deliver long lasting damage to coral reefs, coastlines and fisheries in the region, as well as causing acid rain https://www.reuters.com/business/environment/tongas-volcanic-eruption-may-harm-environment-years-scientists-say-2022-01-18.
International mobile phone network provider Digicel has set up an interim system on the main island using the University of South Pacific's satellite dish, New Zealand said.
ANZ said the bank's Nuku'alofa branch was open for limited services, although clean water and communications were a major challenge.
CUT CABLE
The archipelago has remained largely cut off since the eruption which severed its main undersea communications cable https://www.reuters.com/markets/funds/undersea-cable-fault-could-cut-off-tonga-rest-world-weeks-2022-01-18.
Sydney-based Tongan artist and activist Seini Taumoepeau said the possibility of not seeing loved ones again was the worst fear.
"We've had no contact at all with anyone from Tonga since before the tsunami actually hit, since before the volcano had hit and then everything went dark," she told Reuters.
Subcom, a U.S. based private company contracted to repair subsea cables in the Asia-Pacific, said it was working with Tonga Cable Ltd to repair the cable that runs from Tonga to Fiji.
Samiuela Fonua, the chair of Tonga Cable, said there were two cuts in the undersea cable that would not be fixed until volcanic activity ceased, allowing repair crews access.
The island of Hunga Tonga-Hunga Ha'apai, which sits on the seismically active Pacific Ring of Fire, all but disappeared following the blast, according to satellite images https://www.reuters.com/world/asia-pacific/scientists-struggle-monitor-tonga-volcano-after-massive-eruption-2022-01-17, making it difficult for volcanologists to monitor activity.
Tonga is a kingdom of 176 islands, of which 36 are inhabited, with a population of 104,494 people.
(Reporting by Jane Wardell, Praveen Menon and Kirsty Needham; Additional reporting by Emma Farge, Emma Thomassaon and Elaine Lies; Writing by Jane Wardell; Editing by Richard Pullin, Michael Perry, Robert Birsel and Alison Williams)
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