HAPPINESS

IS A WARM CUP

December 20, 2025 5:14 pm

Southern California Overview:

Dry conditions with above average temperatures inland will continue into early this week. Periods of patchy fog expected near the coast and valleys through Sunday. An Atmospheric River will bring widespread heavy rain and mountain snow above 8000 ft late Tuesday into Thursday (Christmas Day). Additionally gusty southerly winds can be expected across much of the area, including the coast. There are additional chances for showers Friday and next Saturday but chances are lower.

United States Overview:

Active pattern to continue for the West Coast with heavy rainfall and higher elevation heavy snow over the next couple of days. Flood potential will increase across central/northern California on Sunday and Monday with several inches of rain forecast. Temperatures will be well above average from the Intermountain West into the southern to central High Plains.

A very wet period began 12/17 and continued through 12/22 as strong westerly flow across the Pacific tapped a pool of deep subtropical moisture near Hawaii, resulting in days of moderate to heavy rainfall. Four to 12 inches of rain fell in the coastal and valley areas over six days, 12 to 28 inches in the mountains, up to nine inches in the high desert and less than four inches in the lower desert. Major landslides and flash flooding impacted the communities of Laguna Beach, Apple Valley, along the Whitewater Channel in the Coachella Valley near Palm Springs, Highland, Corona, Loma Linda, La Jolla, and the city of San Diego from 12/21 to 12/22. Qualcomm Stadium was flooded, but was miraculously drained and prepared for the Poinsettia Bowl held there on 12/23. Heavy wet snow accumulated above 6500 feet with amounts over six inches and as much as two feet above 7500 feet.

Southland WX

Southland WX

HAPPINESS

IS A WARM CUP

Southern California Overview:

United States Overview: