Start of the Hunga eruption eventually leading to the tsunami. Notice the lightning. One of the reasons plane's can't get in is the amount of ash cloud in the air. Because Hunga was showing volcanic activity before the big eruption, the Government recommended people disconnect their water pipes from the rain water tanks. This isn't a flick of a switch process for most homes and even if this is done, an amount of toxic ash would still settle on roofs and get Into tanks. Drinking water challenges

13 Main Effects Of Tsunami On The Environment