A low pressure system moved over Southern California, bringing rain and high level mountain snow. Coast and valley areas received between 0.50 inch and 1 inch, with locally higher amounts up to 2 inches in the valleys. Mountain areas received 2 to 3 inches, with locally higher amounts in the San Bernardino Mountains. Desert areas received 0.25 to 0.50 inch.  Heavy rain resulted in river flooding along the San Diego River, where water levels at Fashion Valley topped out at 9 feet (action stage). Many roads around Fashion Valley Mall were closed due to flooding. The Tijuana River also flooded the Tijuana River Valley, closing roads and trapping cars in flood waters. A hiker went missing on Mount Baldy on December 8th, and a search and rescue worker died on December 14th during a search for the missing hiker.

Flash Flood in RIVERSIDE, CALIFORNIA
From 04-DEC-19 10:00:00 to 04-DEC-19 15:00:00 (PST-8)
Location: CRAF
Flood cause: Heavy Rain
Property damage: 759.00K
Crop damage: 0.00K
Reported by: Department of Highways

Interstate 10 in Redlands had a large sinkhole on the shoulder of the interstate due to flooding. Total cost to repair the damage was $759,000.

Flood in SAN DIEGO, CALIFORNIA
From 04-DEC-19 12:00:00 to 04-DEC-19 16:00:00 (PST-8)
Location: (NRS)NAF IMPERIAL BE
Flood cause: Heavy Rain
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Department of Highways

Hollister Street flooded in the Tijuana River Valley. Cars were stalled in 2 feet of water, some requiring water rescues.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 04-DEC-19 11:00:00 to 04-DEC-19 14:00:00 (PST-8)
Location: PHELAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 138 eastbound near Phelan flooded and was closed down. Tractor trailers were stalled out in the flood waters.

Winter Weather in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 04-DEC-19 05:00:00 to 04-DEC-19 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media reported a missing hiker on Mount Baldy on December 8th, with treacherous winter weather conditions on the mountain. A search and rescue worker died on December 14th after falling down an icy ravine while searching for the hiker. All search and rescue operations were halted after the worker death. The missing hiker was never found.

Flash Flood in RIVERSIDE, CALIFORNIA
From 04-DEC-19 09:30:00 to 04-DEC-19 12:30:00 (PST-8)
Location: BLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 60 at Grove Ave was flooded due to heavy rain.

Flood in SAN DIEGO, CALIFORNIA
From 04-DEC-19 15:00:00 to 04-DEC-19 18:00:00 (PST-8)
Location: HILLCREST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Avenida del Rio flooded at Fashion Valley Mall due to the San Diego River reaching 9 feet. Water was approximately 12 to 18 inches deep.

Flood in SAN DIEGO, CALIFORNIA
From 04-DEC-19 10:00:00 to 04-DEC-19 15:00:00 (PST-8)
Location: DEL DIOS
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Department of Highways

Harmony Grove flooding over low lying water crossing from Escondido Creek. This is a flood prone area that has flood gates and cameras.

Flood in SAN DIEGO, CALIFORNIA
From 04-DEC-19 09:00:00 to 04-DEC-19 12:00:00 (PST-8)
Location: CREST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Dehesa Road, just east of El Cajon, had debris across the road approximately 3-4 feet wide.