The following events were reported: Debris Flow, Flash Flood, Flood, Heavy Rain. These occurred near station USW00093184, approximately 22.2009 km away, between 2023-01-14 11:00:00 and 2023-01-16 04:30:00. The flood was caused by Heavy Rain. Thankfully, no injuries or fatalities were reported. No significant property or crop damage was reported. Episode Narrative: The last in a series of atmospheric rivers impact Southern California January 14-16. Widespread heavy rainfall occurred in back-to-back two waves, with the first occurring the afternoon of January 14 into the early morning hours on January 15, and the second occurring the night of January 15 through January 16.||The first storm system resulted in numerous reports of flooding in San Diego County, Orange County and Riverside County and high-elevation snow in the mountains of San Bernardino and Riverside Counties. Rainfall amounts generally ranged from 1 to 2 inches for the coast, 1 to 2.5 inches in the valleys, 2 to 5 inches in the mountains and up to one-half of an inch in the deserts.||The second, colder system again produced widespread moderate to heavy rainfall, with the heaviest rain focusing on San Diego County. Many reports of flooding were received in San Diego County, with numerous swiftwater rescues performed, with 19 alone by San Diego City. The San Diego River overflowed, with the highest impacts reported in Fashion Valley on January 16, with a dozen swiftwater rescues performed before dawn. Nearby areas in Hotel Circle were evacuated due to the threat of flooding.||Impressive precipitation amounts were reported from the two back-to-back system, with 2 to 4 inches of rain received at the coast, 2 to 5 inches for the inland valley and 3 to 8+ inches for the mountains. The last in a series of atmospheric rivers impact Southern California January 14-16. Event Narrative: A retaining wall collapsed in Corona around 4:30 AM on January 16 resulting in twenty-four residents who had to evacuate their homes in nearby areas. One home was damaged immediately below the wall, and cracked the foundation above. Broadcast media reported that concrete blocks crashed down into adjacent properties, burying backyards and patios, and smashing through glass doors. Corona has received 1.5 to 3 inches of rain in the preceding 48 hours before the collapse. Widespread heavy rain fell from late morning on January 14 through much of the afternoon. Rain accumulations of 1.25 inch to 2 inches were common across inland Orange County, resulting in widespread flooding reports. The following are reports of flooding from the Department of Highways.||Both lanes of the I-5 north offramp was 4th Ave was flooded in Santa Ana. Four vehicles were stuck in the flood waters.||Farther south, three vehicles were stuck in the flooded onramp to northbound I-5 at Crown Valley Pkwy in Laguna Niguel. Orange County Fire Authority reported a swiftwater rescue of a young adult clinging to a tree in a creek, with rapidly moving water below. The person was airlifted out with no injuries reported. The Department of Highways reported a rockslide in the westbound lane of Highway 74 near Hot Springs Canyon Road. Over 1 inch of rain had fallen in the region.