When air slowly sinks due to factors like terrain or diverging surface winds, it warms up. As it warms, the moisture content remains in vapor form, resulting in clear skies. Conversely, when air rises ...

Have you ever wondered how a cloud stays in the sky? In a recent conversation with my friend and colleague Alan Sealls, the AMS President-Elect told me that he pondered this very question, and it ...

NORFOLK, Va. — Spotting a cumulus cloud is pretty easy. The clouds resemble pieces of cotton candy, but why are cumulus clouds fluffy and not flat? To fully understand why, we need to start with the ...

GRAND RAPIDS, Mich. (WOOD) — Just because something floats doesn’t mean it is weightless. A great example is when oil is poured onto water. The oil will float on top of the water, but that doesn’t ...

The answer lies in a combination of engine exhaust, air temperature, humidity and other atmospheric conditions.