Volcanoes and ashfall

Where the risk is

Ready.gov says:

• There are 161 potentially active volcanoes in the United States.
• Alaska, Hawaii, California, Washington, and Oregon have the most, but other states and territories have them too.
• Lava and debris can flow at up to 100 mph.
• Ash can contaminate water, damage machinery, reduce visibility, and irritate skin, eyes, nose, and throat.

Prepare now

• Sign up for the free USGS Volcano Notification Service.
• Ask local emergency management about evacuation and ash shelter plans.
• Store food, cleaning supplies, and water for several days.
• Talk to your doctor if you have breathing problems.
• Plan for pets and livestock.
• Check what your homeowner's insurance covers.

During

• Evacuate early if told to.
• Avoid areas downwind of the volcano and river valleys downstream of it.
• If you have supplies, shelter where you are. Cover vents and seal doors and windows.
• Avoid driving in heavy ash.
• Do not get on your roof to remove ash.

After

• Stay indoors until authorities say it's safe.
• Text rather than call.
• People with asthma or lung conditions should avoid contact with ash.
• See USGS volcanic ash guidance.