When you hear about a category five hurricane, you know it can be deadly. Now meteorologists have created a new scale to track the strong winter storms that slam the west coast. The new system could help give more people warning and ranks some of our past storms. Northern California is no stranger to strong storms that cause flooding, levee breaks, and mudslides. In the past, they’ve been known as a pineapple express, and more recently they’ve been dubbed atmospheric rivers. Now scientists have developed a new scientific scale to track them.