Severe Weather Safety - Straight Line Winds/Large Hail

4/18/2017 (Permalink)

Car damaged by large hail

Severe Thunderstorm Straight-line Winds:

• Don’t underestimate the power of strong thunderstorm winds known as straight-line winds – they can reach speeds of 100 to 150 mph. Hurricane-force winds start at 74 mph. Illinois does experience these kinds of winds!
• If a severe thunderstorm warning contains hurricane-force wind speeds seek shelter immediately (as you would for a tornado situation).Stay away from windows and go to the basement or interior room/hallway. Do not use electrical appliances.
• Be aware that tall trees near a building can be uprooted by straight-line winds – that tree can come crashing through the roof of a home and crush a person to death.
• Powerful straight-line winds can overturn a vehicle or even make a person air-borne when they get up over 100 mph!
• One type of a straight-line wind event is a downburst, which is a small area of rapidly descending rain-cooled air and rain beneath a thunderstorm. A downburst can cause damage equivalent to a strong tornado!

Large Hail:

• Although it is rare, people have been killed by large hail stones after sustaining head injuries. Additionally, several people are injured by large hail stones each year in the U.S.
• Some thunderstorms can produce large hail stones that can reach the size of baseballs, softballs, or even as big as computer compact discs (CD) or DVDs! These large hail stones can fall at speeds over 100 mph! – that’s why they are dangerous!
• If a severe storm is producing large hail stones, seek a sturdy shelter and stay away from windows that can easily be smashed.
• If you are in your vehicle before the hail storm starts, get out of it and go to a sturdy shelter. Glass windows in vehicles can easily be smashed by the hail stones. If you can’t get out of your vehicle, then come to a stop and cover your head with your arms and hands.