Weather Quiz

Unstable conditions are characterized by cumulus clouds, turbulence, showery precipitation, and good visibility.

The difference between the existing lapse rate of a given mass of air and the adiabatic rates of cooling in upward moving air determines if the air is stable or unstable.

An individual microburst will seldom last longer than 15 minutes from the time it strikes the ground until dissipation. However, there may be multiple microbursts in the area.

A squall line is a non-frontal, narrow band of active thunderstorms. The line may be too long to easily detour and too wide and severe to penetrate. It often contains severe steady-state thunderstorms and presents the single, most intense weather hazard to aircraft.

Standard sea level pressure is 29.92 "Hg. Standard sea level temperature is 15°C.