But, the truth is, we don't know everything. At least the general population doesn't. In fact, although there is plenty of meteorological reseach out there for reference, a wide swath of the population clings to a number of weather myths that, although they sound correct, just aren't true. Earlier this month, AccuWeather.com set out to put some of these weather myths to bed by explaining some of the most widespread and misinformed of the bunch. Click though to learn what you've been doing wrong all these years.

Myth #1: Humid air is heavier than dry air

According to AccuWeather.com meteorologist Steve Wistar, dry air is actually heavier than humid air, despite the fact that it seems like you can “feel” humid air as you move through it. “There are more molecules of water in humid air which are lighter than molecules of air,” he said in the story.

Myth #2: Tornadoes don't hit cities or mountains

As someone who lives in an urban area on the Great Plains can admit, this is just wishful thinking. Why would a city have been built here if it was a common tornado area? Residents of Kansas City, Denver and Oklahoma City might have some opinions on that.

The truth is, although rough terrain and tall buildings do tend to distrupt the circular forces that create tornadoes, they aren't impossible in these areas.

Myth #3: Red sky at night, sailor's delight…

Kinda true, kinda not.

The idea behind the classic axiom — “red sky at night sailor's delight, red sky in morning sailors take warning” — is that red skies are most common when the atmosphere is dry, meaning that they appear at sunset when the dry area is to the west (since the sun sets in the west). Dry air to the east means a red sky in the morning at sunrise.

Since weather patterns in North America generally move from west to east, this idea stands up most of the time, but it isn't a guarantee because weather systems can move in any direction, not just west to east.

Myth #4: Today's cars can drive safely through flood waters

To be honest, I'm not sure how common this myth really is, but it never fails during flood season to see news coverage of at least one driver who has been swept away after trying to drive through flood waters.

Truth is, as little as two feet of water can float a car.

Myth #5: Lightning doesn't strike the same place twice

Of course it doesn't, right? There is so much space out there, why would lightning ever need to repeat?

But it does, according to AccuWeather.

“The Empire State Building gets struck repeatedly [on average of 100 times a year]. It all depends on how much an object sticks up in the sky,” Wistar said.