Blast Zone and Ash in Wind Projection

Blast Zone

Green Circle is Critical Emergency Zone Area
Blue Line Circles are intimidate wind projections

And North of these areas:
The Red Line circle is the Ash Area (You do not want to be in this circle as it is bad enough anyway.
The Black Line circle is the Wind Drift area where ash could be carried to (but it is mostly going to be in the northern hemisphere where the ash will fall.