What is actually an atmospheric waterway?

.FOR CALIFORNIANS it seemed like du00e9ju00e0 vu. In 2015 a march of storms, fuelled through atmospheric rivers, killed at least 21 individuals and also resulted in almost $5bn-worth of damage throughout the state. On February fourth this year the very same form of storm once more created chaos.

Hurricane-strength winds buffeted the central coast near Significant Sur. In Los Angeles personalities were saturated as they reached the Grammy honors’ ceremony. Residences in the Hollywood Hills were dealt with in dirt.

A minimum of 3 individuals have actually died. What are actually atmospherical rivers, and also are they a risk past California?