Lightning Safety
Outdoors
Each year, about 400 children and adults in the U.S. are
struck by lightning while working outside, at sports events,
on the beach, mountain climbing, mowing the lawn or during
other outdoor activities. About 80 people are killed and
several hundred more are left to cope with permanent
disabilities. Many of these tragedies can be avoided.
Finishing the game, getting a tan, or completing a work shift
aren't worth death or crippling injury.
- All thunderstorms produce lightning and are
dangerous.
Lightning kills more people each year
than tornadoes.
- Lightning often strikes as far as 10 miles away from
any rainfall.
Many deaths from lightning occur ahead
of the storm because people try and wait to the last minute
before seeking shelter.
- You are in danger from lightning if you can hear
thunder.
If you can hear thunder, lightning is close
enough that it could strike your location at any moment.
- Lightning injuries can lead to permanent disabilities
or death.
On average, 20% of strike victims die; 70%
of survivors suffer serious long term effects.
- Look for dark cloud bases and increasing wind.
Every flash of lightning is dangerous, even the first. Head
to safety before that first flash. If you hear thunder, head
to safety!
- Blue Skies and Lightning. Lightning can travel
sideways for up to 10 miles. Even when the sky looks blue
and clear, be cautious. If you hear thunder, take cover. At
least 10% of lightning occurs without visible clouds in the
sky.
The Single Most Dangerous Place
Outdoors is the most dangerous place to be during a
lightning storm. When lightning is seen or thunder is heard,
or when dark clouds are observed, quickly move indoors or into
a hard-topped vehicle and remain there until well after the
lightning storm ends. Listen to forecasts and warnings through
NOAA Weather Radio or your local TV and radio stations. If
lightning is forecast, plan an alternate activity or know
where you can take cover quickly.
The U.S. lightning season is summer but lightning can
strike year round! The Fourth of July is historically one of
the most deadly times of the year for lightning. In summer,
more people are outside, on the beach, golf course, mountains
or ball fields. Outdoor jobs such as construction and
agriculture, and outdoor chores such as lawn mowing or house
painting are at their peak, putting those involved in danger.
Safety Rules
-
Postpone activities promptly. Don't wait
for rain. Many people take shelter from the rain,
but most people struck by lightning are not in the rain! Go
quickly inside a completely enclosed building, not a
carport, open garage or covered patio. If no enclosed
building is convenient, get inside a hard-topped all-metal
vehicle. A cave is a good option outside but move as far as
possible from the cave entrance.
- Be the lowest point. Lightning hits the tallest
object.
In the mountains if you are above treeline,
you ARE the highest object around. Quickly get below
treeline and get into a grove of small trees. Don't be the
second tallest object during a lightning storm! Crouch down
if you are in an exposed area.
- Keep an eye on the sky.
Look for darkening
skies, flashes of lightning, or increasing wind, which may
be signs of an approaching thunderstorm.
- Listen for the sound of thunder.
If you can
hear thunder, go to a safe shelter immediately.
- If you see or hear a thunderstorm coming or your hair
stands on end, immediately suspend your game or practice and
instruct everyone to go inside a sturdy building or car.
Sturdy buildings are the safest place to be. Avoid
sheds, picnic shelters, baseball dugouts, and bleachers. If
no sturdy building is nearby, a hard-top vehicle with
windows closed will offer some protection. The steel frame
of the vehicle provides some protection if you are not
touching metal.
- Listen to NOAA Weather Radio.
Coaches and
other leaders should listen for a tone-alert feature during
practice sessions and games.
-
If you can't get to a shelter, stay away
from trees. If there is no shelter, crouch in the
open, keeping twice as far away from a tree as it is tall.
-
Avoid leaning against vehicles.
Get off bicycles and motorcycles.
-
Get out of the water. It's a great
conducter of electricity. Stay off the beach
and out of small boats or canoes. If caught in a boat,
crouch down in the center of the boat away from metal
hardware. Swimming, wading, snorkling and scuba diving are
NOT safe. Lightning can strike the water and travel some
distance beneath and away from its point of contact.Don't
stand in puddles of water, even if wearing rubber boots.
-
Avoid metal! Drop metal backpacks,
stay away from clothes lines, fences, exposed sheds and
electrically conductive elevated objects. Don't hold on to
metal items such golf clubs, fishing rods, tennis rackets or
tools. Large metal objects can conduct lightning. Small
metal objects can cause burns.
- Move away from a group of people.
Stay
several yards away from other people. Don't share a bleacher
bench or huddle in a group.
What to do if someone is struck by lightning:
- Call for help.
Call 9-1-1 or your local
ambulance service. Get medical attention as quickly as
possible.
- Give first aid.
If the victim has stopped
breathing, begin rescue breathing. If the heart has stopped
beating, a trained person should give CPR. If the person has
a pulse and is breathing, address any other injuries.
- Check for burns in two places.
The injured
person has received an electric shock and may be burned.
Being struck by lightning can also cause nervous system
damage, broken bones, and loss of hearing or eyesight.
People struck by lightning carry no electrical charge that
can shock other people. You can examine them without risk.
Stay Informed About the Storm
Listen to NOAA Weather Radio or local media for the latest
severe thunderstorm WATCHES and WARNINGS. Severe
thunderstorms are those storms with winds in excess of 58 mph
or hail larger than 3/4 inches in diameter. When conditions
are favorable for severe weather to develop, a severe
thunderstorm WATCH is issued.
Weather Service personnel use information from weather
radar, satellite, lightning detection, spotters, and other
sources to issue severe thunderstorm WARNINGS for areas
where severe weather is imminent. Remember, however, that
ALL thunderstorms produce deadly
lightning. |