Month's worth of Rain in 6 Hours

Take a look at the amount of rain that poured onto Orange County from 9 pm on 25 November to 5 am 26 November, as seen in THIS ARTICLE:

Yorba Linda: 1.93 inches

Huntington Beach: 1.81 inches

Corona del Mar: 1.81 inches

Costa Mesa: 1.85 inches

Westminster: 1.69 inches

Newport Coast: 1.65 inches

Brea-Olinda: 1.57 inches

Laguna Canyon: 1.57 inches

Laguna Beach: 1.54 inches

Irvine: 1.38 inches

Laguna Niguel Lake: 1.38 inches

Villa Park Dam: 1.34 inches

Garden Grove: 1.26 inches

Santa Ana: 1.28 inches

Anaheim: 1.22 inches

San Juan Capistrano: 1.22 inches

El Toro: 1.22 inches

Upper Oso Creek: 1.22 inches

Upper Harding Canyon: 01.10 inches

Upper Silverado Canyon: 1.02 inches

Coto de Caza: 0.91 inches

---> Keep in mind that OC's November Rainfall Average is 1.31 inches!

OC Parks Are Closed Due to Muddy Conditions today.


Also from the OC Register:
What Are Mudslides and What Are Debris Flows?
How to Prepare for Mudslides and Debris Flows After a Fire
How to Stabilize Your Soil and Prevent Erosion