We've been looking into the Tonga eruption in more detail. Our latest data says that the main volcanic 'umbrella' reached 35km altitude - but some points (such as the image below) may have reached 55km altitude!
Shocking altitudes that show just how violent this eruption was. https://t.co/AaL4td8MIb pic.twitter.com/55Im0Yvcub

— Simon Proud (@simon_sat) January 20, 2022