An atmospheric river is slamming portions of California ... Atmospheric rivers are long, narrow tracts of the Earth’s atmosphere that gather moisture from the tropics near the equator and ...

The weather phenomena are common for California winters, but they could cause dangerous debris flows or mudslides in recently ...

Another atmospheric river is expected to bring heavy rain to ... narrow tracts of the Earth’s atmosphere that gather moisture from the tropics near the equator and sweep it toward the poles.

like a river on earth," she says. When the ARs collide with the topography along the coast, they are forced upward higher in the atmosphere. That upward motion causes the water vapor they carry to ...