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eo.ucar.edu/kids/dangerwx/tstorm4.htm

How Do Thunderstorms Form? On a hot summer day the surface of the Earth is heated by the sun. The Earth's surface heats the air just above the surface through the process of conduction. The action of warm air rising and cold air sinking (convection) plays a key role in the formation of severe thunderstorms.

en.wikipedia.org/wiki/Thunderstorm

Thunderstorm preparedness and safety refers to taking steps before, during, and after a thunderstorm to minimize injury and damage. Preparedness. Preparedness refers to precautions that should be taken before a thunderstorm. Some preparedness takes the form of general readiness (as a thunderstorm can occur at any time of the day or year).

scied.ucar.edu/shortcontent/how-thunderstorms-form

Most thunderstorms form with three stages: the cumulus stage when storm clouds form, the mature stage when the storm is fully formed, and then the dissipating stage when the storm weakens and breaks apart.. The Cumulus Stage When warm, moist air moves upward in an updraft, puffy cumulus clouds may form in the atmosphere.

www.nssl.noaa.gov/education/svrwx101/thunderstorms

Severe Weather 101 Thunderstorm Basics. What we do: Read more about NSSL's thunderstorm research here. What is a thunderstorm? A thunderstorm is a rain shower during which you hear thunder. Since thunder comes from lightning, all thunderstorms have lightning.

www.weatherwizkids.com/weather-thunderstorms.htm

What is a thunderstorm? A thunderstorm is a storm with lightning and thunder. Its produced by a cumulonimbus cloud, usually producing gusty winds, heavy rain and sometimes hail. What causes a thunderstorm? The basic ingredients used to make a thunderstorm are moisture, unstable air and lift. You need moisture to form clouds and rain.

www.youtube.com/watch?v=TTff6Ik3D-4

In this Weather Wizard segment, meteorologist Mark Elliot looks shows us how a thunderstorm is created. Hint: rising air that does not mix.

www.reference.com/science/thunderstorm-form-6ab1972c77f9ad38

How Does a Thunderstorm Form? Thunderstorms form when rapidly rising warm air brings moisture to higher parts of the atmosphere, then water vapor cools and condenses into droplets that fall to the Earth as rain. The process of rising warm air is called convection, which occurs when the atmosphere above the surface of the planet is unstable due ...

www.eartheclipse.com/geography/thunderstorm-formation-types-effects.html

How a Thunderstorm is Formed? The integral ingredients for making a thunderstorm are moisture, unstable air, and lift. Moisture is necessary for the formation of clouds and rain. The unstable air should be somewhat warm and able to rise rapidly. Lastly, the lift can form from sea breezes, mountains, or fronts.

answersdrive.com/how-is-a-thunderstorm-formed-251172

All thunderstorms, severe or not, must have three conditions present in order to develop. The first necessary condition is moisture in the lower and mid levels of the atmosphere. As air rises in a thunderstorm updraft, moisture condenses into small water drop which form clouds (and eventually precipitation).

www.nasa.gov/audience/forstudents/k-4/home/F_What_Causes_Lightning_Flash.html

How is lightning made? People used to make up stories to answer that question. Today, science tells us how. You have heard of Ben Franklin. Did you know he flew a kite during a thunderstorm? He wanted to prove that lightning is a form of electricity. We know now that flying a kite in a storm is not ...