Explosive volcanoes blast hot solid and molten rock fragments and gases into the air.
As a result, ashflows can occur on all sides of a volcano and ash can fall hundreds of miles downwind. Dangerous mudflows and floods can occur in valleys leading away from volcanoes. If you live near a known volcano, active or dormant, be prepared to follow instructions from your local emergency officials. If you live in a known volcanic hazard area, plan a route out and have a backup route in mind. Develop an emergency communication plan.