This phrase has been popularized of late. It refers to a weather system that is bringing lots of precipitation. It's like a river of water but in the sky or atmosphere. It's what we once referred to as a rain storm or rainy weather. An extended period of rain.
Citizens in western British Columbia are concerned about flooding due to an Atmospheric River heading towards the Province.
A really difficult series of undergraduate and an almost impossible series of graduate Meteorology courses where you are forced, against your will, to derive a lot of pointless shit. Avoid at all costs.
Syn: Succubus, Marriage, Graduate School, and any other thing that leaves the victim completely devoid of a life.
Condescending geek speak for suggesting that your power cord is unplugged. Used to make people with social lives to feel as though they've been bested by a being whose diet consists primarily of Cheetos and Mountain Dew.
There are a bunch of disembodied dicks and assholes floating in the sky and they are fucking so fast that the air around it absorbs the energy, forming the image of a cloud. Except all the assholes are yours.
Look at that cloud!
Yeah, I know about atmospheric absorption theory.