That can quickly prompt melting, runoff and flooding and decrease the snowpack needed for California’s water supply. What is a pineapple express? It is a nickname for a strong atmospheric river ...

Atmospheric rivers happen all over the planet, but a Pineapple Express refers to a specific recurring atmospheric river that hits the U.S. West Coast.

When it reaches the West Coast, the Pineapple Express can dump as much as five inches of rain on California in one day. While the term 'atmospheric river' is relatively new, Kalansky says they ...

WHAT HAPPENS WHEN AN ATMOSPHERIC RIVER REACHES LAND? When the moisture-laden air moves over mountain ranges such as the Sierra Nevada along the California-Nevada line, the water vapor rises and ...

Atmospheric ... the Mississippi River, according to the U.S. Geological Survey. When the moisture-laden air moves over mountain ranges such as the Sierra Nevada along the California-Nevada line ...