Atmospheric rivers are long corridors of water vapour, a few hundred kilometres wide, carrying moisture from the tropics to the mid-latitudes. According to NOAA, an average one carries about as much water as the Mississippi pours out at its mouth, and the strongest up to 15 times more. When they hit mountains, they can unleash torrential rain.
On 27 August 1883, the eruption of the Indonesian volcano Krakatoa was heard as far away as Rodrigues Island, nearly 4,800 km away. Its pressure wave was picked up by barometers worldwide and circled the globe several times. The tsunamis that followed killed more than 36,000 people.
The deepest known point in the ocean, Challenger Deep, lies roughly 10,900 m below the Pacific surface. Drop Everest in and its summit would still sit about 2 km underwater. Down there, the pressure is more than 1,000 times what you feel at sea level, roughly a tonne pressing on every square centimetre.