San Francisco Receives More Rain in First Eight Days of January Than All of 2013
Extreme weather, from drought to heavy downpour, lambasted much of California over the last couple of weeks.
An atmospheric river brimming with moisture, known as the "Pineapple Express," brought tropical Hawaiian water to California with some of the worst flooding since 2005. The river can carry up to 15 times the equivalent volume of the Mississippi River. According to NASA, "Between 30 and 50 percent of the annual precipitation in the western U.S. comes from just a few atmospheric river events."