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Thunderstorm and Lightning
All thunderstorms are dangerous as every one produces
lightning. In the United States, averages of 300 people are
injured and 80 people are killed each year by lightning.
Although most lightning victims survive, people struck by
lightning often report a variety of long-term, debilitating
symptoms.
Other associated dangers of thunderstorms include tornadoes,
strong winds, hail and flash flooding. Flash flooding is
responsible for more fatalities—more than 140 annually—than
any other risk linked with thunderstorms.
Dry thunderstorms that have raindrops evaporating before
hitting the ground can have lightning that still reaches the
ground and starts wildfires.
The following are facts about thunderstorms:
They may occur singly, in clusters or in lines
Some of the most severe occur when a single thunderstorm
distresses one location for an extended time
Thunderstorms typically produce heavy rain for a brief
period
Warm, humid conditions are favorable for thunderstorms
The following are facts about lightning:
Lightning’s unpredictability increases risks to individuals
and property
Lightning may occur as far as 10 miles away from any
rainfall
“Heat lightning” is actually lightning from a thunderstorm
too far away for thunder to be heard
Most lightning deaths and injuries occur when people are
caught outdoors in the summer months
Lightning strike victims carry no electrical charge and
should be attended to immediately.
Know the Terms:
Familiarize yourself with these terms to help identify a
thunderstorm hazard:
Severe Thunderstorm Watch: Tells you when and where severe
thunderstorms are likely to occur. Watch the sky and stay
tuned to radio or television for information.
Severe Thunderstorm Warning: Issued when severe weather has
been reported by spotters or indicated by radar. Warnings
indicate imminent danger to life and property to those in
the path of the storm.
Take Protective Measures
What can I do Before Thunderstorms and Lightning?
To prepare for a thunderstorm, you should do the following:
Remove dead or rotting trees and branches that could fall
and cause injury or damage
Remember the 30/30 lightning safety rules: Go indoors if,
after seeing lightning, you cannot count to 30 before
hearing thunder
Thunderstorms
The following are guidelines for what you should do if a
thunderstorm is likely in your area:
Postpone outdoor activities
Get inside a home, building or hard top automobile
The steel frame of a hard-topped vehicle provides protection
as long as you are not touching metal
Secure outdoor objects
Shutter windows and secure outside doors
Avoid showering or bathing
Unplug all appliances and other electrical items
Use a battery-operated radio for updates
Avoid the following:
Natural lightning rods such as a tall, isolated tree in an
open area
Hilltops, open fields, the beach or a boat on the water
Isolated sheds or other small structures in open areas
Anything metal
What do I do During a Thunderstorm?
If you are:
In a forest:
Seek shelter in a low area under a thick growth of small
trees
In an open area:
Go to a low place such as a ravine or valley
Be alert for flash floods
On open water:
Get to land and find shelter immediately
Anywhere you feel your hair stand on end:
Which indicates that lightning is about to strike
Squat low to the ground on the balls of your feet
Place your hands over your ears and your head between your
knees
Make yourself the smallest target possible and minimize your
contact to the ground
DO NOT lie flat on the ground
What do I do After a Thunderstorm?
Call 9-1-1 for medical assistance as soon as possible.
The following are things you should check when you attempt
to give aid to a victim of lightning:
Breathing - if breathing has stopped, begin mouth-to-mouth
resuscitation
Heartbeat - if the heart has stopped, administer CPR
Pulse
Check for burns where the lightning entered and left the
body.
Also be alert for nervous system damage
Broken bones
Loss of hearing
Loss of eyesight
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