In Hawaii, Hurricane Lane is meeting Kilauea this week.

https://www.cnbc.com/2018/08/24/hurricane-lane-could-cause-white-out-landslides-with-kilauea-volcano.html

"Other volcanoes have interacted with hurricanes and the results have been disastrous," said Tracy Gregg, an associate professor of geology at the University of Buffalo. "Kilauea is being polite, in comparison."

Volcanic eruptions have the most potential for catastrophe when they are spewing huge columns of ash and gas into the atmosphere, like Mount St. Helens in 1980 or Pinatubo in 1991, scientists say.

"They are putting heat and ash into the atmosphere and that interacts with the moisture in the hurricane and can cause the ash to glob into little balls while it is up in the air and fall down as essentially hail stones" and cause landslides, Gregg said.

Gregg described it as "two monsters passing in a closet. They are really not going to notice each other. They are just going to keep doing what they do."