Tropical Storm Hilary moves on from California, leaving a trail of damage and debris

A worker from the Coachella Valley Water Department surveys debris flowing across a road following heavy rains from Tropical Storm Hilary, in Rancho Mirage, Calif., on Monday. (David Swanson/AFP via Getty Images)

Hilary, the first tropical storm to hit Southern California in over 80 years, began to dissipate on Monday after walloping the region with record-breaking rainfall.

The storm is moving on to Nevada with less vigor after leaving millions of California residents under flood risk warnings, causing thousands of homes and businesses to lose power and shutting down major school districts.