ash fall

American  

Or ashfall

noun

Geology.

1. a rain of airborne ash resulting from a volcanic eruption.

2. the deposit produced by such an event.

---

Example Sentences

Authorities had instructed residents to stay indoors and use masks during the ash fall and limit outside exposure for children and pets.

From Washington Post

An ash fall advisory expired at 10 a.m.

From Washington Post

But Solidum said activity would not be as explosive as the January 2020 eruption and that ash fall could be limited to communities within the volcano, which sits in the middle of a lake.

From Reuters

"Going through the tsunami that night…moving from daylight to darkness, in over half an hour because of the ash fall, we recognise that's a problem," he told me in an interview for the BBC's Newsday programme.

From BBC

Scientists are now trying to obtain and study samples of the ash fall to better understand its potential health impacts, said Professor Stewart, who teaches at Massey University’s School of Health Sciences in Wellington, the New Zealand capital.

From New York Times