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The Heart of American Fire Chiefs would like to remind you of the hazards associated with severe weather. Knowing the safety precautions could prevent injuries and possibly save your life and/or someone else’s life. Know how to protect yourself and your family during severe weather and different emergency situations.
Severe Weather Terms
The “WATCH and WARNING” advisories are passed to local radio and television stations and broadcast over local NOAA Weather Radio stations serving the warned areas. These warnings are also relayed to local emergency management and public safety officials who can activate local warning systems to alert communities.
Tornadoes are relatively short-lived local storms. They are composed of violently rotating columns of air that descend in the familiar funnel shape from thunderstorm cloud systems. The weather conditions that tend to generate tornadoes are unseasonably warm and humid earth surface air, cold air at middle atmospheric levels, and strong upper-level jet stream winds. Tornadoes can occur anywhere in the United States during any month of the year. However, the Great Plains and Gulf Coast States experience the largest number of tornadoes. The greatest frequency of tornadoes occurs in April, May and June.
The destructive path of a tornado averages about 250 yards in width and 15 miles in length. In extreme conditions, a tornado may travel more than 300 miles and leave a path of total destruction more than a mile wide. Tornadoes will travel up to 60 mph, with wind speeds approaching 400 mph in the tornado’s center. Tornadoes usually travel from a westerly direction to an easterly direction.
By definition, a thunderstorm is a cloud that contains lightning and thunder. A typical storm is usually 15 miles in diameter lasting an average of 30 minutes. Every thunderstorm produces lightning, which kills more people each year than tornadoes.
Lightning often strikes outside of heavy rainfall and may occur as far as 10 miles from the rain. If you are outside during a lightning storm, seek inside shelter immediately and stay off the telephone. Debunking a myth, rubber-soled shoes and/or rubber tires provide NO protection from lightning. However, if lightning hits the car you are in, the steel frame of a hard topped vehicle will provide increased protection provided you are not touching metal when your car is hit by lightning.
A severe thunderstorm is a storm that contains large hail (three-quarters of an inch in diameter or larger), damaging or straight-line winds (58 mph or greater) and/or a tornado. A downburst is a strong out rush of wind formed by rain-cooled air. Strong down bursts, which produce extensive damage, are often mistaken for tornadoes. A downburst can easily overturn a mobile home, tear roofs off houses and topple trees.
The National Weather Service considers a thunderstorm severe if it produces hail at least three-quarters of an inch in diameter, winds of at least 58 mph and/or a down burst.
Heavy rain from thunderstorms can lead to flash flooding. The power of flowing water can easily sweep away trees, building, automobiles and people. Missourians needlessly die when they drive their cars into low water crossings and drown when the car is swept off the road.
On an average, it takes about two feet of water for a car to float downstream. However, it takes less than one foot of water for a smaller car to stall. Once a car stalls, the driver normally walks to safety. If the driver is not careful, he could be swept into deeper water beneath the low water crossing.
NEVER drive into a flooded area. NEVER drive around road barricades. NEVER assume the water isn’t deep. Looks can be deceiving. How many times have television crews captured dramatic footage of rescue workers plucking victims out of flooded water downstream caused by low water crossings? While the water may only look two feet deep, it might be closer to five or six feet deep.
Be proactive. If you are camping near a small stream, be prepared to move quickly if flooding occurs. Heavy rain upstream may lead to serious flooding near your campsite with little or no warning. Avoid camping near streams if rain is forecast.
Signs and Warnings
Tornadoes develop during severe thunderstorms. While not all thunderstorms create tornadoes, the potential is there. During violent weather, keep tuned to a local television or radio station for tornado reports.
If you are outside and see a funnel-shaped cloud with obvious rotating motion, it may be a tornado. As a tornado develops, it will produce a loud roar that grows louder as the funnel cloud touches the ground. When nearby, a tornado sounds comparable to the combined roars of several jet engines.
The National Severe Storms Forecast Center in Kansas City issues tornado watches. Local National Weather Service offices issue tornado warnings. Local officials may sound sirens in a tornado warning.
The best preparation for a tornado is to designate a safe place in or around your home as a tornado shelter. Tornado shelters are safest if they are underground. A storm cellar or basement away from windows offers the best protection.
If neither of these is available, plan to find shelter under heavy furniture or mattresses near an inside wall of your house on the ground floor. Get under solid furniture or cover yourselves with mattresses pulled off the bed.
During a year, there are a lot of potential disasters that could impact your family: a Hazardous Material accident could force your family to evacuate your home; a winter storm, an earthquake or tornado could cut off basic services such as gas, water, electricity or phone service.
There are six basic types of supplies you should have packed in a special container (such as a large trash container, a backpack or a duffel bag) in case of a natural or man-made disaster. Those supplies include:
If you have a storm cellar or shelter, go to it immediately with your family. If no shelter is available, go to your basement and get under a heavy workbench or stairs. Do not position yourself directly underneath heavy appliances on the floor above you.
If your home has no basement, stay in the center of the house away from the windows or in a small room on the ground floor that is away from outside walls. Take cover under solid furniture or mattresses. Protect your head.
In mobile homes or vehicles, evacuate and take shelter in a substantial structure. If there is no nearby shelter, lie flat in the nearest ditch or ravine with your hands shielding your head.
In any large building, such as an office or department store, avoid all large, poorly supported roofs. Go to the basement or to an inner hallway on a lower floor.
Do not drive. You are safer in a home or basement shelter than in a car. If you are driving in a city and spot a tornado, get out of your car and go to a nearby building. If you are driving in open country, drive at a right angle away from the tornado’s path if you can safely do so. Do not try to outrun the storm. If you cannot avoid the tornado, get out of your car. Lie flat in the nearest depression, such as a ditch, culvert or ravine. Protect your head and stay low to the ground.
LIGHTNING – WHAT TO DO
If you are caught outside in a thunderstorm, get inside a building or a car. If you must stay outside, keep away from metal, including golf carts, motorcycles, fences, metal lines or pipes. Stay below ground level, away from hilltops, open beaches or fields. And most importantly stay away from open water.
LIGHTNING – STAY INSIDE: Each year lightning kills more Americans than tornadoes or hurricanes. Most of these deaths happen outside. If you are inside a building, or even a car, your chances of being struck by lightning are slim. Stay on top of weather conditions when planning camping trips, swimming, fishing, golf or other outdoor activities.
NEVER DRIVE INTO WATER: Never drive into a flooded area. It takes two feet of water on the road to make a car float. Once floating, the car will be swept downstream and will often overturn, trapping occupants inside. If your car stalls in high water, abandon it immediately – MOVE TO HIGHER GROUND.
FO – Weak (40-72 mph) – chimneys are lightly
damaged, branches break, signs blow down
F1 – Weak (73-112 mph) – Roofs are damaged, mobile homes overturned automobiles blow off road
F2 – Strong (113-157 mph) – Objects become airborne; crops flatten
F3 – Strong (158-206 mph) – Walls collapse, trains derail, trees are uprooted, and cars are lifted and thrown,
F4 – Violent (207-260 mph) – Well-constructed houses are leveled, large objects become airborne, crops are uprooted
F5 – Violent (261-318 mph) – Strong frame houses disintegrate, cars are thrown more than 100 yards, trees are debarked, and gound becomes barren
Six Common Lightning Myths
For further information visit the websites below or contact your American Red Cross, National Weather Service, Local Emergency Management and Fire Departments, or local offices in your area. This information is being provided in general, for detail information see the websites or contact the above agencies for printed information.
Click on Tornado, flood or Lighting safety
Click on appropriate topics.
Click on appropriate topics.
Floyd Peoples, Chief Fire Marshal, Kansas City, Mo., Fire Department, 816-784-9100
Heart of America Metro Fire Chiefs Council, 9550 W. 95th St., Overland Park, Kan. 66212