Friday, January 22, 2010

Winter Storms and Extreme Cold

Heavy snowfall and extreme cold can immobilize an entire region. Even areas that normally experience mild winters can be hit with a major snowstorm or extreme cold. Winter storms can result in flooding, storm surge, closed highways, blocked roads, downed power lines and hypothermia.

How can I protect myself from winter storms and extreme cold?

* Know your winter storm and extreme cold terms
* What to do before winter storms and extreme cold
* What to do during a winter storm
* What to do after a winter storm
* Learn about floods that can result from winter storm thaws

Thursday, January 21, 2010

Thunderstorms and Lightning

* Facts About Thunderstorms
* Facts About Lightning
* How Can I Protect Myself From a Thunderstorm or Lightning?

All thunderstorms are dangerous. Every thunderstorm produces lightning. In the United States, an average 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 thunderstorm-associated hazard.

Dry thunderstorms that do not produce rain that reaches the ground are most prevalent in the western United States. Falling raindrops evaporate, but lightning can still reach the ground and can start wildfires.
Facts About Thunderstorms

* They may occur singly, in clusters, or in lines.

* Some of the most severe occur when a single thunderstorm affects one location for an extended time.

* Thunderstorms typically produce heavy rain for a brief period, anywhere from 3 0 minutes to an hour.

* Warm, humid conditions are highly favorable for thunderstorm development.

* About 10 percent of thunderstorms are classified as severe—one that produces hail at least three-quarters of an inch in diameter, has winds of 58 miles per hour or higher, or produces a tornado.

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Facts About Lightning

* Lightning’s unpredictability increases the risk to individuals and property.

* Lightning often strikes outside of heavy rain and 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. However, the storm may be moving in your direction!

* Most lightning deaths and injuries occur when people are caught outdoors in the summer months during the afternoon and evening.

* Your chances of being struck by lightning are estimated to be 1 in 600,000, but could be reduced even further by following safety precautions.

* Lightning strike victims carry no electrical charge and should be attended to immediately.

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How Can I Protect Myself From a Thunderstorm or Lightning?

* Know your terms
* What to do before a thunderstorm
* What to do during a thunderstorm
* What to do after a thunderstorm

What to Do After an Earthquake


* Expect aftershocks. These secondary shockwaves are usually less violent than the main quake but can be strong enough to do additional damage to weakened structures and can occur in the first hours, days, weeks, or even months after the quake.

* Listen to a battery-operated radio or television. Listen for the latest emergency information.

* Use the telephone only for emergency calls.

* Open cabinets cautiously. Beware of objects that can fall off shelves.

* Stay away from damaged areas. Stay away unless your assistance has been specifically requested by police, fire, or relief organizations. Return home only when authorities say it is safe.

* Be aware of possible tsunamis if you live in coastal areas. These are also known as seismic sea waves (mistakenly called "tidal waves"). When local authorities issue a tsunami warning, assume that a series of dangerous waves is on the way. Stay away from the beach.

* Help injured or trapped persons. Remember to help your neighbors who may require special assistance such as infants, the elderly, and people with disabilities. Give first aid where appropriate. Do not move seriously injured persons unless they are in immediate danger of further injury. Call for help.

* Clean up spilled medicines, bleaches, gasoline or other flammable liquids immediately. Leave the area if you smell gas or fumes from other chemicals.

* Inspect the entire length of chimneys for damage. Unnoticed damage could lead to a fire.

* Inspect utilities.
o Check for gas leaks. If you smell gas or hear blowing or hissing noise, open a window and quickly leave the building. Turn off the gas at the outside main valve if you can and call the gas company from a neighbor's home. If you turn off the gas for any reason, it must be turned back on by a professional.

o Look for electrical system damage. If you see sparks or broken or frayed wires, or if you smell hot insulation, turn off the electricity at the main fuse box or circuit breaker. If you have to step in water to get to the fuse box or circuit breaker, call an electrician first for advice.

o Check for sewage and water lines damage. If you suspect sewage lines are damaged, avoid using the toilets and call a plumber. If water pipes are damaged, contact the water company and avoid using water from the tap. You can obtain safe water by melting ice cubes.

What to Do During an Earthquake

Stay as safe as possible during an earthquake. Be aware that some earthquakes are actually fore shocks and a larger earthquake might occur. Minimize your movements to a few steps to a nearby safe place and stay indoors until the shaking has stopped and you are sure exiting is safe.
If indoors

* DROP to the ground; take COVER by getting under a sturdy table or other piece of furniture; and HOLD ON on until the shaking stops. If there isn’t a table or desk near you, cover your face and head with your arms and crouch in an inside corner of the building.
* Stay away from glass, windows, outside doors and walls, and anything that could fall, such as lighting fixtures or furniture.
* Stay in bed if you are there when the earthquake strikes. Hold on and protect your head with a pillow, unless you are under a heavy light fixture that could fall. In that case, move to the nearest safe place.
* Use a doorway for shelter only if it is in close proximity to you and if you know it is a strongly supported, load bearing doorway.
* Stay inside until shaking stops and it is safe to go outside. Research has shown that most injuries occur when people inside buildings attempt to move to a different location inside the building or try to leave.
* Be aware that the electricity may go out or the sprinkler systems or fire alarms may turn on.
* DO NOT use the elevators.

If outdoors

* Stay there.
* Move away from buildings, streetlights, and utility wires.
* Once in the open, stay there until the shaking stops. The greatest danger exists directly outside buildings, at exits, and alongside exterior walls. Many of the 120 fatalities from the 1933 Long Beach earthquake occurred when people ran outside of buildings only to be killed by falling debris from collapsing walls. Ground movement during an earthquake is seldom the direct cause of death or injury. Most earthquake-related casualties result from collapsing walls, flying glass, and falling objects.

If in a moving vehicle

* Stop as quickly as safety permits and stay in the vehicle. Avoid stopping near or under buildings, trees, overpasses, and utility wires.
* Proceed cautiously once the earthquake has stopped. Avoid roads, bridges, or ramps that might have been damaged by the earthquake.

If trapped under debris

* Do not light a match.
* Do not move about or kick up dust.
* Cover your mouth with a handkerchief or clothing.
* Tap on a pipe or wall so rescuers can locate you. Use a whistle if one is available. Shout only as a last resort. Shouting can cause you to inhale dangerous amounts of dust.