A broad upper level Pacific trough moved through the West Coast on September 14-15 and tapped into remnant tropical cyclone Linda moisture west of the California Bight. Widespread and locally heavy rainfall developed across the entire CWA with 1 to 2 inches of rainfall common. The heavy rain resulted in a major traffic impact during the morning commute in LA and Orange County, along with a debris flow in Silverado Canyon, and widespread urban flooding in San Diego, Orange, Riverside and San Bernardino Counties.

Flash Flood in SAN DIEGO, CALIFORNIA
From 15-SEP-15 11:30:00 to 15-SEP-15 12:30:00 (PST-8)
Location: OVERLOOK
Flood cause: Heavy Rain
Property damage: 800.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several businesses in the Midway District were flooded...with water up to knee deep. Several vehicles were flooded in an underground parking garage in Ocean Beach, including a brand new Lamborghini luxury car flooded halfway deep.

Tsunami in Orange County Coastal, CALIFORNIA
From 16-SEP-15 17:43:00 to 17-SEP-15 11:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An 8.3 magnitude earthquake that struck off the coast of Chile on the 16th led the National Tsunami Warning Center to issue a tsunami advisory at 1743 PST for a swath of California, from Orange County to north of San Luis Obispo. No action was necessary in San Diego County, the Center determined. All beaches, harbors, piers, and marinas in the Cities of Seal Beach, Huntington Beach, Newport Beach, Laguna Beach, Dana Point and San Clemente, including County and State beaches were closed through 0500 PST on the 17th. Tsunami wave heights were observed to be just under one foot along the Orange County coast. The Orange County EOC reported no significant coastal flooding occurred, but to be aware of the high likelihood of strong currents and waves dangerous to persons in or near the water. The advisory was lifted around 1100 PST on the 17th.

Flash Flood in ORANGE, CALIFORNIA
From 15-SEP-15 08:00:00 to 15-SEP-15 09:00:00 (PST-8)
Location: SILVERADO
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An Orange County Emergency Manager reported a debris flow 2 feet deep over Silverado Canyon Road at Maple Springs Truck Trail. Further downstream, there was another debris flow at Silverado Canyon Road and Oak Lane, but the road was still passable.

Flash Flood in ORANGE, CALIFORNIA
From 15-SEP-15 06:30:00 to 15-SEP-15 07:00:00 (PST-8)
Location: SEAL BEACH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported the right lane of the Pacific Coast Highway flooded at the intersection with Main Street...road was nearly impassable.

Flood in ORANGE, CALIFORNIA
From 15-SEP-15 10:00:00 to 15-SEP-15 11:00:00 (PST-8)
Location: SAN CLEMENTE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

CHP reported the #4 lane of the Avenida Pico southbound on-ramp to I-5 south was completely flooded.

Heavy Rain in RIVERSIDE, CALIFORNIA
From 15-SEP-15 09:00:00 to 15-SEP-15 11:00:00 (PST-8)
Location: ESPERANZA
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The CBS affiliate in Los Angeles reported two westbound lanes on the 91 freeway at Green River Road in Corona experienced a 50-yard crack as water penetrated the soil underneath the pavement. An emergency repair of the road took place and multiple lanes were closed.

Flood in SAN BERNARDINO, CALIFORNIA
From 15-SEP-15 08:00:00 to 15-SEP-15 10:00:00 (PST-8)
Location: HIGHLAND
Flood cause: Heavy Rain
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One house had damage inside from flooding on the San Manuel Indian Reservation, while a second house had flooding on the outside, but did not sustain any damage inside. This was dubbed the Victoria Weather Incident by the San Bernardino County EOC.

Flood in SAN BERNARDINO, CALIFORNIA
From 15-SEP-15 08:30:00 to 15-SEP-15 10:30:00 (PST-8)
Location: MONTE VISTA
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Broadcast Media

TV media reported several vehicles stuck in flood waters at Grove Avenue and Francis Street in Ontario. Also, Peyton Drive in Chino Hills was shut down in both directions south of Eucalyptus Avenue due to flooding.

Flood in SAN BERNARDINO, CALIFORNIA
From 15-SEP-15 08:30:00 to 15-SEP-15 09:30:00 (PST-8)
Location: COLTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Valley Blvd. was flooded between Hermosa and Grand Avenues.

Debris Flow in SAN BERNARDINO, CALIFORNIA
From 15-SEP-15 11:30:00 to 15-SEP-15 12:30:00 (PST-8)
Location: FOREST FALLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A debris flow along slide creek closed Valley of the Falls Drive, the main road going into Forest Falls. Also, Mill Creek experienced moderate flooding below Forest Falls.