February 28 through March 6 is Severe Weather Preparedness Week in Illinois
Severe weather in the form of tornadoes, deadly lightning, flash foods, damaging winds, and destructive hail strike Illinois each spring, summer and fall, sometimes with incredible violence.
The National Weather Service urges you to develop a safety plan for use at your home,
workplace, school, vehicle, and for outdoor activities. Be aware of severe weather safety rules. Planning ahead and knowing what to do might save your life. For more information visit the Illinois Emergency Management Agency web site at http://www.state.il.us/iema/.
Tornado Watches and Warnings
Tornadoes are the most destructive storms that occur in Illinois. Being prepared for a tornado can save your life.
A tornado watch means severe thunderstorms and tornadoes are possible in your area over the next few hours. Be prepared.
A tornado warning means a tornado has been sighted by a trained storm spotter, or intense rotation that will likely produce a tornado has been detected by Doppler radar. Get to a place of safety immediately.
Statewide Tornado Drill Tuesday March 2
Tuesday March 2 at 1000 AM CST a test tornado warning will be issued for all Illinois counties. Many locations in Illinois will also test sirens on Tuesday morning.
The test warnings will be disseminated through NOAA Weather Radio – All Hazards with the tone alarm and SAME codes. Many commercial radio and TV stations will participate by passing along the test tornado warning. This would be a good time to review your severe weather procedures or conduct a tornado drill at your school or place of business.
In Illinois and Indiana, most tornadoes occur from April through June, during the mid afternoon through early evening hours, but they can occur anytime of day and any month of the year. Last year Illinois had 52 tornadoes, which is a little above the 30-year average of 43 tornadoes. In 2006, Illinois set a state record with 124 tornadoes. Illinois ranks fifth in the nation in tornado frequency per square mile. There were no fatalities but 27 injuries caused by tornadoes in 2009. The strongest tornado was an EF3 which hit central Illinois from Williamsville to near Beason on August 19. This tornado was up to a half mile wide. It caused about 18 million dollars in damage and injured 19 people.
When a tornado threatens, you may only have seconds to save yourself and your family. Have a preparedness plan for your home, school, and workplace. Know where to find the best tornado shelter.
· In a home, go to the basement and get under the stairwell, or under a heavy piece of furniture. If there is no basement, go to an interior closet, hall or bathroom on the lowest floor and stay away from windows. Cover your head with pillows or sofa cushions.
· In schools, hospitals, churches and office buildings, go to small interior rooms or halls on the lowest floor. Stay away from windows. Avoid large open areas with free span roofs such as gymnasiums and cafeterias.
· In steel and concrete high rise buildings, it is not necessary to get to the lowest floor, but go to interior halls, bathrooms or closets. Stay away from windows.
· In shopping centers, avoid large open areas and glass. Seek shelter in bathrooms, small interior spaces and behind counters. Do not attempt to escape in your vehicle.
· Abandon mobile homes and vehicles for a nearby reinforced building. As a last resort lie flat in a ditch. Do not seek shelter under an overpass.
Lightning is the most frequent important weather threat to personal safety during the thunderstorm season. Keep these lightning safety tips in mind;
Plan ahead and avoid dangerous lightning situations. Check the latest forecast before going outdoors for extended periods. Watch for storms and seek shelter indoors when storms approach.
Lightning often strikes the tallest object. If caught outdoors during a storm, don’t stand next to tall trees or power poles. And don’t be out in an open area where you may be the tallest object. A closed, hard top metal vehicle is safe in a thunderstorm. An open structure such as a picnic shelter will keep you dry but it will not protect you from lightning.
If boating or swimming, get out of the water when storms approach and seek shelter indoors.
Avoid using electrical appliances, corded telephones and metal plumbing when indoors during a thunderstorm. It is okay to use a cell phone or cordless phone.
The best way to stay safe from lightning is to go indoors as soon as there is a threat. “When thunder roars, go indoors!”
Flash Flood Safety
A flash flood is a rapid rise in creeks and streams, or serious urban flooding, caused by heavy rain from thunderstorms, that poses a threat to life and property. Floods and flash floods kill more people nationwide than any other storm hazard. In Illinois, most flash floods occur in July and August, and they often occur at night. Last year, four people died in flooding in Illinois.
About half of all flash flood related deaths occur in vehicles. Don’t drive through flooded roads, especially if the water is moving rapidly. Flooded or washed out roads are especially difficult to see at night. Remember, turn around, don't drown.
Don’t let children play near storm drains, creeks or flooded areas.
If you live near a creek or stream, evacuate to higher ground if water rises rapidly or if a flash flood warning is issued.
Urban flooding is also potentially dangerous. Heavy rain that results in flooding of streets, viaducts and underpasses in an urban area can pose a threat to motorists. Heavy rain can also result in flooded basements, ponding of water in low spots and rapid flooding of drainage ditches and storm sewer systems.
March 15 through 19 is national flood safety awareness week. For more information, visit www.floodsafety.noaa.gov.
Severe Thunderstorm Safety
Severe thunderstorms pose a threat to life and property. They produce damaging downburst winds of around 60 mph or greater, and/or large destructive hail one inch diameter or greater. Flooding rains, frequent cloud to ground lightning, and tornadoes are also possible in severe thunderstorms.
A severe thunderstorm watch means severe thunderstorms are possible in the next few hours. Be prepared.
A severe thunderstorm warning means a thunderstorm capable of causing property damage and injury has been sighted or detected by radar. Go indoors and stay away from windows.
Damaging straight line or downburst winds from a thunderstorm can do as much damage as a weak to moderate tornado, so take severe thunderstorm warnings seriously.
Very large hail, golf ball or larger, is not only very destructive, but it occurs with the most violent of storms.
NOAA Weather Radio – All Hazards and National Weather Service Web Pages
Today, a better understanding of tornadoes, new technology such as Doppler radar, faster communications, and better Skywarn storm spotting networks, allow meteorologists to provide more accurate and timely warnings for destructive tornadoes and severe storms.
But in order for the warnings to be effective, people must receive the warnings in a timely manner and take proper actions to protect themselves.
The best way to receive severe weather watches and warnings is with a tone alert NOAA Weather Radio – All Hazards. A weather radio will give you severe weather information direct from your local National Weather Service office. Watches and warnings are preceded by a tone alert that can automatically activate your radio and get your attention with a high pitched alarm – even if storms hit in the middle of the night. Newer S.A.M.E equipped radios can be programmed to only alert you to watches and warnings for a specific county, or group of counties.
In addition, the radios can alert you to a non-weather emergency such as a hazardous material spill or child abduction.
Weather radios can be purchased at many electronics and department stores for 30 to 80 dollars. They are highly recommended for homes, schools, hospitals, nursing homes, day care centers, and businesses. You should also take one along when boating or camping.
You can get up to the minute forecasts, watches, warnings, storm reports, radar images, satellite pictures, climate data, severe weather safety information, and more from NOAA’s National Weather Service online at weather.gov. You can view warnings graphically to see if you are in the path of a warned storm.
Each National Weather Service issues a Hazardous Weather Outlook every morning. This product highlights any potentially hazardous weather, including severe storms, that is forecast for the next seven days. The Hazardous Weather Outlook is available on NOAA Weather Radio and on the local NWS web pages.
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