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What To Do If Evacuation Is Not Possible During Eruption?

May 8, 2026

Quick Answer

If evacuation is not possible during a volcanic eruption, find a safe shelter and stay informed about the eruption's progress and any evacuation orders that may still be issued.

Shelters from Lahars

A lahar is a type of volcanic mudflow that can be deadly and destructive. If you cannot evacuate, find a shelter with the following characteristics: at least two stories high, built on a solid foundation, and with no windows that can be easily broken. An example of a suitable shelter is a concrete building with a strong roof and walls, such as a school or a hospital. Avoid shelters made of wood, adobe, or other materials that can collapse.

Protecting Yourself from Pyroclastic Flows

If you are in a shelter, seal all windows and doors with airtight materials like tape, plastic sheets, and plywood. This will help prevent pyroclastic flows from entering the shelter. Stay away from windows and exterior walls, and go to the center of the shelter. Wear long-sleeved shirts, long pants, and sturdy shoes to protect yourself from heat and debris. Bring a battery-powered radio to stay informed about the eruption’s progress and any evacuation orders that may still be issued.

Staying Safe During the Eruption

Stay indoors and away from windows during the eruption. Avoid going outside to watch the eruption, as pyroclastic flows can be deadly. If you must go outside, wear a mask to protect yourself from ash and gas emissions. Bring a first aid kit and a supply of food and water to last at least three days. Stay tuned to local news and emergency alerts for updates on the eruption and any evacuation orders.

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