An undersea volcano that erupted (pictured) in Tonga, triggering a 7.4 magnitude earthquake, was so large it was visible from space and sent tsunami waves crashing into the coast of the Pacific island, and left it covered in ash and cut off from aid. In the US, waves of up to 4.1 feet were recorded in Port San Luis on Saturday, and tsunami-effect waves were recorded along the coast in California, Oregon, Washington, British Columbia, and Alaska . Satellite images showed the spectacular eruption from space and despite the dire warnings, spectators flocked to the beaches to view the surging tsunami waves, while surfers threw caution to the wind to catch the powerful waves generated by the surge. Tsunami-hit Tonga remained largely uncontactable on Sunday with telephone and internet links severed, leaving relatives in faraway New Zealand praying for their families on the Pacific islands as casualty reports had yet to come through. The massive ash cloud covering the tiny island nation of Tonga is preventing surveillance flights from New Zealand to assess the extent of damage.