The storm (Storms) occurs when the center of low pressure air and high pressure air occurs around the integration of the impact. , causing wind which resulted, displacement deformation of thunderstorm, such as state called cumulonimbus, which is in the form of a dense clouds cloudy full charge, causing the ฝนฟ thunder.
The low pressure may be caused by the small dots that any area caused by hot air floating up from the ground. Turbulent resulted in little such as the dust storm (dust devils) or a whirlwind (whirlwinds).