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This
particular page was designed as a component of SVGMETS public education
programme. Realising SVGMETS role in
our
small and developing economy must transcend the provision of
"data"; we must seek actively to bring about changes in
attitudes and behaviours of it's reliant users, especially the
general public - so that lives and property maybe
protected.
This page
is not a substitute for, but a supplement to, the information
dispensed by local town hall meetings and workshops of the
Disaster Preparedness Organisation. We urge you therefore to attend
all meetings sponsored by the National Emergency Management
Organisation and held in your
district.
The official Hurricane Season occurs every June through
November. Seldom however, does the formation of tropical
cyclones occur outside this period.
By international agreement, all cyclonic circulations
originating over tropical waters are classified by form and
intensity as follows:
TROPICAL
WAVE: An inverted, migratory wave-like disturbance
or trough in the tropics that moves from east to west,
generally best defined by a shift in winds (directions). It
may also have associated cloudiness and rain. In a
well-behaved wave, the low level convergence and associated
convective weather occur on the eastern side of the wave axis.
Normally, it moves slower than the atmospheric current in
which it is embedded and is considered a weak trough of low
pressure. It is often associated with possible tropical
cyclone development and is also known as a Easterly
Wave.
TROPICAL DISTURBANCE:
An area of organized
convection, originating in the tropics and occasionally the
subtropics, that maintains its identity for 24 hours or
more.
Rotary circulation slight or absent at the surface, but
sometimes better developed aloft, no closed isobars (lines of
equal atmospheric pressure) and no strong winds, a common
phenomenon in the tropics. It is often the first
developmental stage of any subsequent tropical depression,
tropical storm, or hurricane.
TROPICAL DEPRESSION:
A tropical
cyclone in which the maximum sustained surface winds are 39
miles per hour (33 knots) or less. Characteristically having
one or more closed isobars
and some rotary circulation at surface.
It
may form slowly from a tropical disturbance or an easterly
wave which has continued to
organize.
TROPICAL STORM: There are closed isobars (lines denoting areas of equal
pressure), distinct rotary circulation, highest wind speed of
74 miles per hour (34-63 knots).
HURRICANE: There are closed isobars (lines denoting areas of equal
pressure), strong and very pronounced rotary circulation,
minimum wind speed of 74 miles per hour (64 knots) or
more.
THE SAFFIR/SIMPSON HURRICANE SCALE:
The Saffir/Simpson Hurricane scale is an index that
attempts to relate hurricane intensity to damage potential.
This descriptive scale, which ranges over a scale of 1 to 5,
is summarised below:
Category 1:
Winds of 74 to 95
miles per hour. Damage primarily to shrubbery, trees,
foliage, and unanchored mobile homes. No real damage to other
structures. Some damage to poorly constructed signs. And/or:
Storm surges 4 to 5 feet above
normal. Low-lying coastal roads inundated, minor pier
damage, some small craft in exposed anchorage torn from
moorings.
Category 2:
Winds of 96 to 110
miles per hour. Considerable damage to shrubbery and tree
foliage; some trees blown down. Major damage to exposed mobile
homes. Extensive damage to poorly constructed signs.
Some damage to roofing materials of buildings; some window and
door damage. No major damage to buildings. And/or: Storm
surges 6 to 8 feet above normal. Coastal
roads and low-lying escape routes inland cut by rising water 2
to 4 hours before arrival of hurricane center.
Considerable damage to piers. Marinas flooded.
Small craft in unprotected anchorage torn from moorings.
Evacuation of some shoreline residences and low-lying island
areas required.
Category 3:
Winds of 111 to 130 miles per hour. Foliage torn from
trees; large trees blown down. Practically all poorly
constructed signs blown down. Some damage to roofing
materials of buildings; some window and door damage. Some
structural damage to small buildings. Mobile homes destroyed.
And/or: Storm surges 9 to 12 feet above normal. Serious
flooding at coast and many smaller structures near coast
destroyed; larger structures near coast damaged by battering
waves and floating debris. Low-lying escape routes inland cut
by rising water 3 to 5 hours before hurricane center arrives.
Flat terrain 5 feet or less above sea level flooded inland 8
miles or more. Evacuation of low-lying residences within
several blocks of shoreline possibly
required.
Category 4:
Winds of 131 to 155 miles per hour. Shrubs and trees
blown down; all signs down. Extensive damage to roofing
materials, windows and doors. Complete failure of roofs on
many small residences. Complete destruction of mobile homes.
And/or: Storm surges 13 to 18 feet above normal. Flat terrain
10 feet or less above sea level flooded as far
as
6 miles. Major damage to lower floors of structures
near shore due to flooding and battering waves and floating
debris. Low-lying escape routes inland cut by rising water 3
to 5 hours before hurricane center arrives. Major erosion of
beaches. Massive evacuation of all residences within 500 yards
of shore possibly required, and of
single-
story residences on low ground within 2 miles of shore.
Category 5:
Winds greater than 155 miles per hour. Shrubs and trees
blown down; considerable damage to roofs of buildings; all
signs down. Very severe and extensive damage to windows and
doors. Complete failure of roofs on many residences and
industrial buildings. Extensive shattering of glass in windows
and doors. Some complete building failures. Small buildings
overturned or blown away. Complete destruction of mobile
homes. And/or: Storm surge greater than 18 feet above normal.
Major damage to lower floors of all structures less than 15
feet above sea level within 500 yards of shore. Low-lying
escape routes inland cut by rising water 3 to 5 hours before
hurricane center arrives. Massive evacuation of residential
areas on low ground within 5 to 10 miles of shore possibly
required.
TROPICAL CYCLONE ADVISORY:
Tropical cyclone public advisories are intended for the
general public in areas threatened by a tropical storm or
hurricane. These products follow a standard format that
provides the following information: A lead statement that
highlights significant aspects of the storm Watches and
Warnings issued: storm location and motion, wind and
intensity, expected storm surge, actions to be taken,
associated events (e.g., rainfall, tornadoes, etc.) and the
forecaster's name.
Initial tropical cyclone public
advisories are issued when data confirms that a tropical
cyclone has developed. After that, the other scheduled
advisories are issued at 6-hour intervals.
Special
tropical cyclone public advisories are issued when conditions
require that a hurricane or tropical storm watch or warning be
issued a significant change has occurred requiring a revised
forecast package
Intermediate tropical cyclone public
advisories are issued every 3 hours once a watch or warning
has been issued and every 2 hours once a reliable center
appears on radar. These intermediate advisories update the
earlier advisories when a tropical cyclone affects, or is
forecasted to affect, a coast. These intermediate advisories
are not used to issue watches or warnings but may be used to
clear all or a portion of a watch or warning area.
SMALL-CRAFT ADVISORY: When a hurricane moves within a few hundred miles of
the coast, advisories notifies small-craft operators to take
precautions and not to venture into the open
ocean.
GALE WARNING: When winds of 38-55 miles per hour (33-48 knots)
are expected, a gale warning is added to the advisory
message.
STORM
SURGE: Storm surge is simply water
that is pushed toward the shore by the force of the winds
swirling around the storm. This advancing surge combines with
the normal tides to create the hurricane storm tide, which can
increase the mean water level 15 feet or more. In addition,
wind driven waves are superimposed on the storm tide. This
rise in water level can cause severe flooding in coastal
areas, particularly when the storm tide coincides with the
normal high tides
STORM WATCH: If the storm continues its advance and threatens lives
and property, a storm watch is added to the advisory. It will
covers a specific area and duration. A storm watch means
that storm conditions are a real possibility; it does not mean
they are imminent. When a storm watch is issued,
everyone in the area covered by the watch should listen for an
advisory upgrading the status to a storm or hurricane warning.
Be prepared to act quickly if warnings are
issued.
STORM WARNING: When winds of 55-74 miles per hour (48-64 knots) are
expected, a storm warning is added to the advisory
message. Gale and storm warnings indicate the coastal
area to be affected by the warning, the time during which the
warning will apply, and the expected intensity of the
disturbance. When gale and storm warnings are part of a
tropical cyclone advisory, they may change to a hurricane
warning if the storm continues along the
coast.
HURRICANE WATCH: If the hurricane continues its advance and threatens
coastal and inland regions, a hurricane watch is added to the
advisory, covering a specific area and duration. A
hurricane watch means that hurricane conditions are a real
possibility; it does not mean they are imminent. When a
hurricane watch is issued, everyone in the area covered by the
watch should listen for further advisories and be prepared to
act quickly if hurricane warnings are
issued.
HURRICANE WARNING: When hurricane conditions are expected within 24 hours,
a hurricane warning is added to the advisory. Hurricane
warnings identify coastal areas in which winds of at least 74
miles per hour are expected to occur. A warning may also
describe coastal areas in which dangerously high water or
exceptionally high waves are forecast, even though winds may
be less than hurricane force.
When a HURRICANE WARNING is issued, all precautions
should be taken immediately. Hurricane warnings are
seldom issued more than 24 hours in advance. If the
hurricane's path is unusual or erratic, the warnings may be
issued only a few hours before the beginning of hurricane
conditions. Precautionary actions should begin as soon
as a hurricane warning is
announced.
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The Plan
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Disaster
Safety and Mitigation
Guidelines
Prepare a Personal Evacuation Plan
1) Prescription
medications and medical supplies
2) Bedding and
clothing, including sleeping bags and pillows
3) Bottled water,
battery-operated radio and extra batteries, first aid kit,
flashlight
4) Important documents
and proof of identity, Keys etc.
NB:
Remember to disconnect all
electrical appliances and gas
connections
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Disaster
Kit:
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First aid kit and
essential medications.
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Canned food and can
opener.
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At least three gallons of
drinking water per person.
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Protective clothing,
rainwear, and bedding or sleeping bags.
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Battery-powered radio,
flashlight, and extra batteries.
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Special items for infants,
elderly, or disabled family members.
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Written instructions on
how to turn off electricity, gas and water if authorities advise
you to do so. (Remember, you'll need a professional to turn them
back on.)
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Enter each HURRICANE Season Prepared! Ignore Rumors. Get
the Facts! Call SVGMETS
Hurricane advisories will help save your
life...but you must help....here is what you can
do!
High
Winds
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Install hurricane shutters
or purchase precut 1/2" outdoor plywood boards for each window of
your home. Install anchors for the plywood and pre-drill holes in
the plywood so that you can put it up
quickly.
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Make trees more wind
resistant by strategically removing branches so that wind can blow
through.
Hurricane Watch Issued?
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Prepare
to bring inside all outdoor valuables. The may be lost and
even become dangerous missiles in high winds.
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Reinforce or cover all
windows of your home Note: Tape does not prevent windows from
breaking, so taping windows is not recommended.
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Fill up
your car's gas tank.
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Check supplies
again.
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Continue
to listen to the local radio or TV stations for up-to-date
storm information.
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Hurricane Warning
Issued?
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Listen to the advice of
local officials; do exactly as you are told. Leave if they say so!
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Finish preparation
activities.
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If you must remain at
home, stay indoors, away from windows.
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The calm "eye" is
deceptive; the storm is not passed. The worst part of the storm
will happen once the eye passes over and the winds blow from the
opposite direction. Damage will begin again.
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Stay away from flood
waters. If you come upon a flooded road, turn around and go
another way. If you are caught on a flooded road and waters are
rising rapidly around you, get out of the car and climb to higher
ground.
Hurricane Passed?
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Keep
listening too the local radio or TV stations for instructions.
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If the
local officials ask you to return home, do so.
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Inspect
your property for damage.
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Use
flashlights in the dark; do not use candles.
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Before Lightning Strikes...
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Keep an eye on the sky.
Look for darkening skies, flashes of light, or increasing wind.
Listen for the sound of thunder.
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If you can hear thunder,
you are close enough to the storm to be struck by lightning. Go to
safe shelter immediately.
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Listen to
your local radio and or television stations for the latest
weather forecasts.
Outside?
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If you are
in a forested areas, take shelter under the shorter trees.
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If you are
boating or swimming, get to out of the water and find shelter
immediately!
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Go to a
low-lying, open place away from trees, poles, or metal
objects.
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Squat low
to the ground. Place your hands on your knees with your head
between them. Make yourself the smallest target possible. Do not
lie flat on the ground--you will give a larger surface area and so
too make a larger target.
See Someone Struck by Lightning?
That person carries
no electrical charge and can be handled safely.
Call for help. Get
someone to dial 999, 911, 4561955 or 4561185.
The person has
received an electrical shock and may be burned, both where they were
struck and where the electricity left their body. Check for burns in
both places. Being struck by lightning can also cause nervous system
damage, broken bones, and loss of hearing or eyesight.
Give first aid. If
the person has a pulse and is breathing, look and care for other
possible injuries. If breathing has stopped, begin rescue breathing.
If the heart has stopped beating, a trained person should give CPR.
(Don’t know CPR? Call the Red Cross or the Disaster
Coordinator).
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Drought?
Indoor Use
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Never pour water down
the drain when there may be another use for it. Use it to
water your indoor plants or garden.
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Make sure your
plumbing is free of leaks.
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Repair dripping
faucets by replacing washers. (One drop per second wastes
2,700 gallons of water per year!)
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Replace or fix leaky
toilets.
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Take shorter showers.
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Place a bucket in the
shower to catch excess water for watering plants.
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In the shower, turn
the water on to get wet; turn off to lather up; then turn the
water back on to rinse. Repeat when washing your hair.
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Don't let the water
run while brushing your teeth, washing your face or shaving.
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Avoid flushing the
toilet unnecessarily. Dispose of tissues, insects, and other
similar waste in the trash rather than the toilet.
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When hand washing
dishes, do the whole lot in one basin of soapy water, then
rinse in another of clean water containing a small amount of
chlorine bleach. Do not use a running pipe.
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Do not use running
water to thaw meat or other frozen foods. Defrost food
overnight in the refrigerator, or use the defrost setting on
your microwave.
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Do not waste water
waiting for it to get hot. Capture it for other uses such as
plant watering or heat it on the stove or in a microwave.
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Manually washing clothes? Then do whole lot in a container
basin of soapy water, then rinse in another of clean water.
Don’t use a running faucet
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To
work efficiently, washing machines must be fully loaded or
set the water level for the size of your load.
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Clean vegetables in a
pan filled with water rather than running water from the tap.
Re-use the water that vegetables are washed in for cleaning or
watering plants.
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Outdoor Use
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If you have to wash
your vehicle, use a shut-off nozzle on your hose that can be
adjusted down to a fine spray, so that water flows only as
needed. When finished, turn it off at the faucet instead of at
the nozzle to avoid leaks. Check hose connectors to make sure
plastic or rubber washers are in place to prevent leaks.
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Cut lawn at least
three inches, A higher cut encourages grass roots to grow
deeper, shades the root system, and holds soil moisture.
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If you have a
swimming pool, consider leaving it drained. If you are a
commercial operator, the consider installing a new
water-saving pool filter. A single backflushing with a
traditional filter uses 180 to 250 gallons of water.
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Within the
Community
Participate in public water
conservation and management meetings in your area.
Follow water conservation and water
shortage rules in effect.
Report water losses (broken pipes,
open hydrants, errant sprinklers, abandoned free-flowing wells,
etc.) to the property owner, local authorities or your water
management district.
Encourage your school to develop and
promote water conservation.
Support efforts that create a concern
for water conservation among tourists.
Try to do one
thing each day that will result in saving water. Every drop counts!
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Landslides ?
Some landslides move slowly and cause damage
gradually, whereas others move so rapidly that they can destroy
property and take lives suddenly and unexpectedly. Gravity is the
force driving landslide movement. Landslides most often occur where
this is steepening of slopes by erosion or construction, earthquake
or construction shaking, and volcanic eruptions and such the
like.
Landslides, typically associated with
periods of heavy rainfall tend to worsen the effects of flooding
that often accompanies these events. In areas burned by forest and
brush fires, a lower threshold of precipitation may initiate
landslides.
Mudslides, mudflows, or debris avalanches, are
common types of fast-moving landslides. These flows generally occur
during periods of intense rainfall. They usually start on steep
hillsides as shallow landslides that liquefy and accelerate to
speeds that are typically about 10 miles per hour, but can exceed 35
miles per hour. The consistency of debris flows ranges from watery
mud to thick, rocky mud that can carry large items such as boulders,
trees, and cars. Debris flows from many different sources can
combine in channels, and their destructive power may be greatly
increased. They continue flowing down hills and through channels,
growing in volume with the addition of water, sand, mud, boulders,
trees, and other materials. When the flows reach flatter ground, the
debris spreads over a broad area, sometimes accumulating in thick
deposits that can wreak havoc in developed areas.
Among the most destructive types of debris
flows are those that accompany volcanic eruptions. Areas near the
base La Soufriere volcanoes in the north central areas of St.
Vincent at risk from the same types of flows during future volcanic
eruptions.
If you are at risk from
landslides:
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Talk to your insurance agent. Landslide may not be covered by your current home
insurance.
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Develop an evacuation plan. You should know where to go if you have to leave. Making
plans at the last moment can be upsetting and confusing. Discuss
the plan with your family. Each should know what to do in case all
family members are not together. Discussing disaster ahead of time
helps reduce fear and lets everyone know how to respond during an
event.
During Intense Rain?
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Stay alert and
awake. Many debris-flow fatalities
occur when people are sleeping. Listen to the local radios and
TV stations. Be aware that intense, short bursts of rain may
be particularly dangerous, especially after longer periods of
heavy rainfall and damp weather.
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If you are near a
stream or channel, be alert for any
sudden increase or decrease in water flow and for a change
from clear to muddy water. Such changes may indicate
landslide activity upstream, so be prepared to move quickly.
Don't delay! Save yourself, not your belongings!
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Be especially
alert when driving. Embankments along
roadsides are particularly susceptible to landslides. Watch
the road for collapsed pavement, mud, fallen rocks, and other
indications of possible debris
flows.
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Landslide Imminent?
Contact your local fire, police, or public works
department and disaster management agencies. Local officials are
the best persons able to assess potential danger.
Inform and help neighbors. Your neighbors may
not be aware of potential hazards. Advising them of a potential
threat may help save lives.
Evacuate. Getting out of the path of a
landslide or debris flow is your best
protection.
During a Landslide?
Quickly move out of the path of the landslide or
debris flow. Moving away from the path of the flow to a stable
area will reduce your risk.
If escape is not possible, curl into a tight ball
and protect your head. A tight ball will provide the best
protection for your body.
Landslide Passed?
Stay away from the slide area.
There may be danger of additional slides.
Check for injured and trapped
persons near the slide, without entering the direct slide area.
Direct rescuers to their locations.
Help those who may require special
assistance--infants, elderly people, and people with
disabilities. Elderly people and people with disabilities may
require additional assistance.
Listen to the local radio
or television stations for the latest emergency
information.
Watch for flooding, which may occur after
a landslide or debris flow. Floods sometimes follow
landslides and debris flows because they
may both be started by the same event.
Report broken utility lines to
appropriate authorities. Reporting potential hazards will get
the utilities turned off as quickly as possible, preventing further
hazard and injury.
Check for land and building structure
damage. Damage noted helps you assess the safety of the
area.
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Volunteering?
When disaster strikes many people and the
organisations that assist them become needy of a “helping hand”. You
can assist in providing that hand that helps. You can help directly
with people, serve on management committees, as managers, advisors,
and provide behind the scenes support.
Become a volunteer. The national disaster
preparedness and mitigation Authority and the local Red Cross can
work with you to to utilize your talents, or provide training to
help you serve your community.
Ready to volunteer…
More Preparedness Material
Hurricane
Preparedness
Back to Top
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A Source: Talking About Disaster: Guide for Standard
Messages.
Produced by the National Disaster Education
Coalition, Washington, D.C.,
1999. |
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Updated December 12, 2006. |
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