Intuitive fred888: Here's the problem the Big island of Hawaii is facing:

“We are looking at the possibility of a steam-driven eruption at the summit, which is not as large as magmatic eruptions that we see at volcanoes like Mount St. Helens,” Krippner says. “The hazards are ballistic rocks around the summit area, and ash fall can occur in areas depending on wind strength and direction and the size of the eruption.”

end partial quote from:

https://news.nationalgeographic.com/2018/05/kilauea-hawaii-volcano-eruption-explosion-science-spd/

I described this same type of event destroying the planet Maldek where water and

magma or lava met up and created steam explosions that destroyed the planet during

a nuclear war. Even though the nuclear bombs only destroyed 300 square miles or

so it set up a chain reaction when the magma hit the oceans and started blowing up

chunks of the crust into the atmosphere and into space. If you think of the power

of steam locomotives and then think of something the size of Lake Tahoe hitting Magma

all at once and what that would do you get the general idea.

It is possible therefore that the southern part of the big island of Hawaii could explode

and be gone. I'd say it is about a 50-50 chance at this point if the magma goes below

the water tables and the water tables run into the magma and it explodes. It could

do sequential explosions or one big one or many of different sizes or do something

else entirely. We just don't know until it happens.

Such dramatic action from Hawaii's famously gentle volcano is very rare. The peak has not seen this kind of major explosive eruption since 1924, when a steam-powered eruption caused more than 50 explosions over two and a half weeks. The blasts sent chunks of rock weighing as much as 14 tons hurling through the air.

Similarities between then and now have scientists concerned, but it's tricky to predict when and with how much force Kilauea might explode in this fashion.