Heavy rain flooded California roadways and much-needed snow piled up in the mountains as the first of back-to-back atmospheric rivers pummeled the state Thursday.

This story was updated to correct spelling in headline. An atmospheric phenomenon called a Pineapple Express is expected to bring heavy rains and snowfall to California and the Northwest this week.

California is under a state of emergency as the atmospheric river named Pineapple Express for its origins in Hawaii is slamming the West Coast with heavy rain.

The atmospheric river-fueled storm landed Wednesday in Northern California, bringing brief hourly rain rates of 0.5 to 1 inches, according to the Weather Prediction Center.

The first of two atmospheric rivers is unloading heavy snow at high elevations and gusty winds and soaking rainfall Thursday across a large part of California. More than 20 million people are ...

A series of three atmospheric river storms are soaking Northern California this weekend and into the week ahead in the form of valley rain and mountain snow, with the potential for significant ...

The intense weather was brought on by a "potent Pineapple Express," the National Weather Service said this week, using the term for an atmospheric river that brings moisture-rich, low-pressure ...

The atmospheric river is called a “pineapple express” because it originates in Hawaii. Fox Weather. San Francisco reached a gust of 60 mph Wednesday evening while Oakland wasn’t too far ...

An atmospheric river, known as a "Pineapple Express," is set to bring significant rainfall to parts of California next week, with meteorologists warning that flooding may be possible.

Atmospheric river known as Pineapple Express will bring California heavy snow and rain It's not a strain of cannabis nor a film, this is actually a life-threatening event Atmospheric River effect.

The enormous atmospheric river storm currently slamming California, nicknamed the Pineapple Express, is set to significantly increase the state's snowpack levels, easing concerns about drought ...