What is a Pineapple Express? It's a type of atmospheric river that forms a long, narrow tract in the Earth’s atmosphere. This jet stream gathers moisture from the tropics near the equator ...
Pineapple Express has drenched Northern California in the last few days—but what exactly is it? How common is it? Also, go ...
Weather systems that affect the West Coast of the United States often have their origins in the northern Pacific Ocean. This is because the jet stream usually flows in a general west-to-east fashion.
Two atmospheric rivers have ended Northern California's dry spell, bringing heavy rains and setting records in San Francisco.