• The Hunga Tonga-Hunga Ha'apai eruption injected a record amount of water vapor into the stratosphere, nearly four times that of the Mount Pinatubo eruption.
• Unlike typical eruptions that warm the stratosphere, the Tonga eruption cooled it by 0.5 to 1 degree Celsius due to the water vapor releasing heat to space.
• The eruption caused a significant tsunami with waves reaching over 50 feet near Tonga, affecting global sea levels.