Thinking of the movie dante's peak, are there ash and pyroclastics present during the eruption? would they be consistent with a stratovolcano?

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).

The peak above is part of the  sierra madre occidentals ,  a chain of volcanic mountains that runs through the middle of central america. 

Ineed you to put up a picture of the map so i can you as much as possible.