California is once again being deluged by atmospheric rivers that have unleashed major flooding across the state, with river number 12 scheduled to dump more precipitation the week of March 19.

Experts from Northeastern explained in a story that originally ran in January what causes these flowing streams of vapor that causing the record rains and deadly floods that have put millions of people under an evacuation order.

They talked with Northeastern Global News about the science behind the weather events–and whether climate change and global warming will increase the intensity of rainfall associated with these rivers in the sky.

Read more at Northeastern Global News.

Photo by David McNew/ Getty Images