Volcano
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.
Before: Learn about your community warning
systems and emergency plans.
Be prepared for the
hazards that can accompany volcanoes:
Make evacuation
plans. 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. In case family members are separated from
one another during a volcanic eruption (a real possibility
during the day when adults are at work and children are at
school), have a plan for getting back together. Ask an
out-of-state relative or friend to serve as the “family
contact,” because after a disaster, it’s often easier to call
long distance. Make sure everyone knows the name, address, and
phone number of the contact person.
Have disaster
supplies on hand:
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Although it may seem
safe to stay at home and wait out an eruption, if you
are in a hazardous zone, doing so could be very
dangerous. Stay safe. Follow authorities’ instructions
and put your disaster plan into action.
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Get a pair of goggles
and a throw-away breathing mask for each member of the
household in case of ashfall.
Contact your local
emergency management office or American Red Cross chapter for
more information on volcanoes.
During: Follow the evacuation order issued
by authorities.
Avoid areas downwind
and river valleys downstream of the volcano.
If caught indoors:
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Close all windows,
doors, and dampers.
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Put all machinery
inside a garage or barn.
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Bring animals and
livestock into closed shelters.
If trapped outdoors:
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Seek shelter
indoors.
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If caught in a
rockfall, roll into a ball to protect your head.
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If caught near a
stream, be aware of mudflows. Move up slope, especially if
you hear the roar of a mudflow.
Protect yourself
during ashfall:
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Wear long-sleeved
shirts and long pants.
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Use goggles to
protect your eyes.
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Use a dust mask or
hold a damp cloth over your face to help breathing.
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Keep car or truck
engines off.
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Mudflows are powerful
“rivers” of mud that can move 20 to 40 mph. Hot ash or
lava from a volcanic eruption can rapidly melt snow and
ice at the summit of a volcano. The melt water quickly
mixes with falling ash, with soil cover on lower slopes,
and with debris in its path. This turbulent mixture is
dangerous in stream channels and can travel more than 50
miles away from a volcano. Also intense rainfall can
erode fresh volcanic deposits to form large mudflows. If
you see the water level of a stream begin to rise,
quickly move to high ground. If a mud-flow is
approaching or passes a bridge, stay away from the
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Stay out of the area
defined as a restricted zone by government officials. Effects
of a volcanic eruption can be experienced many miles from a
volcano. Mudflows and flash flooding, wildland fires, and even
deadly hot ashflow can reach you even if you cannot see the
volcano during an eruption. Avoid river valleys and low lying
areas. Trying to watch an erupting volcano up close is a
deadly idea.
Listen to a
battery-operated radio or television for the latest emergency
information.
After: If possible, stay away from volcanic
ashfall areas.
When outside:
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Cover your mouth
and nose. Volcanic ash can irritate your respiratory system.
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Wear goggles to
protect your eyes.
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Keep skin covered
to avoid irritation from contact with ash.
Clear roofs of
ashfall. Ashfall is very heavy and can cause buildings to
collapse. Exercise great caution when working on a roof.
Avoid driving in
heavy ashfall. Driving will stir up more ash that can clog
engines and stall vehicles.
If you have a
respiratory ailment, avoid contact with any amount of ash.
Stay indoors until local health officials advise it is safe to
go outside.
Remember to help your
neighbors who may require special assistance — infants,
elderly people, and people with disabilities.
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