Protect yourself and community against volcanic ash
March 17, 2025
Alaska has many active volcanoes and while eruptions and ashfall events may be rare, we still need to be prepared. Eruptions often happen without warning so knowing what to do ahead of time can help protect your health and property during these sudden events.
Volcanic ash is a mixture of tiny minerals, rock and glass particles that are small with low density. Ash particles are hard, often having jagged edges. Individuals most at risk are Elders, children and those with pre-existing respiratory issues.
Possible health risks of ash fall:
- Discomfort and irritation of eyes, nose or throat
- Those who wear contacts should remove them immediately
- Heightened respiratory and cardiovascular issues
- Shortness of breath
- Cough or wheezing
Preparing for an ashfall event
- Stay aware of volcanic activity in your area or region
- Sign up for local notifications: https://volcanoes.usgs.gov/vns2/
- Confirm building generators are in working condition
- Keep a stockpile of emergency supplies (respirators, eye protection, plastic sheeting, duct tape, brooms, shovels, etc.).
- Be cautious during clean-up. Serious secondary health problems related to ash are rare and usually occur during clean up (falling from ladders and roofs can be deadly).
Exterior building preparation for an ashfall event
- Shut off and cover outdoor electrical equipment with plastic sheets (security cameras, card readers, alarms, electrical panels)
- Close and seal air intake vents
- Protect essential air intake vents with hoods or filters
- Identify/pre-install safe ways to access the roof for major ash removal
Ways to limit exposure after an eruption
- Clear ash from clothing, shoes and pets before going indoors
- Keep windows, doors, vents, and woodstove dampers closed and HVAC systems off
- Seal gaps where ash can enter and use a damp towel at the base of external doors
- Avoid additional indoor air pollution by not smoking, using harsh chemicals, burning candles/incense, etc.
- Change furnace and ventilation filters
- Dust with a damp cloth
- Turn off house fans
- Stay indoors if possible
- Use a proper fitting N95 mask and goggles when going outdoors, especially while driving an ATV
- Use a HEPA air cleaner/filter
Learn more and be prepared with these helpful handouts:
- Volcanic ashfall: Stay safe during an eruption
- Volcanic ashfall: Protecting buildings
- Volcanic ashfall: Water treatment
- Volcanic ashfall: Clean up
See the latest activity on Mount Spurr, here: https://avo.alaska.edu/volcano/spurr For more information on volcanic ash, please visit: https://volcanoes.usgs.gov/volcanic_ash/health.html