How do rain storms form

Fangju Fangju answered. Rainstorms formation process is quite complicated, the general physical condition of the macro for the main physical conditions produce heavy rainfall is adequate stream of water vapor, strong and sustained increase in air movement and atmospheric structure instability.

Medium and small scale weather systems and a variety of surfaces, especially the favorable combination of topography can produce large rainstorm. China's heavy rain caused large-scale weather systems are mainly front, cyclone, shear line, vortex, trough, typhoons, easterly waves and tropical convergence zone and so on. Furthermore, in arid and semi-arid heat of thundershowers in some areas can also result in short duration and small area of heavy rainfall.

Where are severe thunderstorms most common? The greatest severe weather threat in the U. But, no place in the United States is completely safe from the threat of severe weather. A watch can cover parts of a state or several states. Warnings mean there is a serious threat to life and property to those in the path of the storm. ACT now to find safe shelter! A warning can cover parts of counties or several counties in the path of danger.

How does a thunderstorm form? As the air rises, it transfers heat from the surface of the earth to the upper levels of the atmosphere the process of convection. The water vapor it contains begins to cool, releases the heat, condenses and forms a cloud. The cloud eventually grows upward into areas where the temperature is below freezing.

As a storm rises into freezing air, different types of ice particles can be created from freezing liquid drops. The ice particles can grow by condensing vapor like frost and by collecting smaller liquid drops that haven't frozen yet a state called "supercooled". When two ice particles collide, they usually bounce off each other, but one particle can rip off a little bit of ice from the other one and grab some electric charge.

Lots of these collisions build up big regions of electric charges to cause a bolt of lightning, which creates the sound waves we hear as thunder. Read More ». A quantum-inspired model explains why objects moving in a fluid experience drag even at high speeds where viscosity should be negligible.

Swirling winds inside clouds may be one of the keys to quick formation of raindrops. Balkovsky, G. Falkovich, and A. Fouxon Phys. Fluid Dynamics. Superconductivity Quantum Solution to Classical Drag Puzzle September 10, A quantum-inspired model explains why objects moving in a fluid experience drag even at high speeds where viscosity should be negligible.