A dry January across Colorado and the rest of the Rocky Mountain West has created a dichotomy of water haves and have-nots.

SAN FRANCISCO (KRON) — Thursday will be the Bay Area’s last dry day before a trend of wet weather builds into the weekend. An approaching atmospheric river is expected to continue into next week.

An atmospheric river gathers moisture from the tropics and moves it inland. California will see heavy rain and snow in some areas, mostly in the north. Arizona will not only remain dry ...