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A team of scientists has the volcano that under the sea near Tonga in January a record. The Tonga-Hunga Ha'apai volcano erupted on January the 15th. It was the biggest explosion ever using modern instruments and technology. It was also the biggest to in the past 150 years. The scientists said the blast may have as large as the Krakatoa eruption that place in Indonesia in 1883. Dr Robin Matoza from the University of California said: "Tonga a truly global event, just as Krakatoa was. But we've now all these geo-physical [recording] systems, and they something that was really [unmatched] in the modern data."

The volcanic eruption atmospheric shock waves and tsunami waves around the world. It also sonic booms that people heard 10,000km away in Alaska. The eruption even clouds in the sky above the UK, which is 16,500km from Tonga. Scientists in the UK the sudden disappearance of clouds as they higher into the atmosphere. UK scientist Professor Giles Harrison said the atmosphere was "a remarkably interconnected thing". He said: "What on one side of the planet can [] around to the other side at the speed of sound." NASA has the volcano's effects also space and could have the weather in space.