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By Miriam RafteryPhotos are from the National Weather Service presentation
August 30, 2023 (San Diego)—Across Southern California, communities suffered major damage. The National Weather Service has posted a presentation with dramatic photos of the storm’s damage around the state.
Locally, 13 people were rescued from the San Diego River as floodwaters rose.
Schoolbus-sized boulders blocked Interstate 8 at In-Koh-Pah in East County.
Flooding closed State Route 78 at Yaqui Pass and the San Felipe Wash.
Elsewhere in the state, Hilary derailed a train in Cathedral City near Palm Springs, where cars became submerged, washed out several bridges, half-buried some structures in mud, and caused some residents to be rescued by bulldozer rescued by a bulldozer.
The storm’s torrential rains eroded part of State Route 38 in Angelos Oaks, the main route to Big Bear.
It also caused major flooding and damage in Palm Springs and Coachella Valley.
In Forest Falls, the largest debris flow was 100 yards long by 6 feet deep. (Photo by Alex Tardy, National Weather Service)
Below is a list of the storm’s worst impacts, provided by the National Weather Service:
I-10 closure and 2 rail lines both directions midnight Monday August 21 - 1 lane at Monday 4 pm
Highway State Route 38 multiple washouts Barton flats closed UNF
2 bridge washouts at Sevenoaks with missing person SAR
Bridge washout in Mias Canyon
Major debris flow in Wrightwood, closing state Route two at sheep Creek
Major debris flow in Forest Falls, closing value of the falls
Major debris flow in Oak Glen at Potato Canyon in Little San Gorgonio river
Bridge damage and permanent closure Windy point
Major 250 yard wide debris Flood, Indian Canyon, and date palm with road damage on four-lane road
SR 247 flooded out and mud - Mojave River flooding Helendale
14 persons - rescued in Cathedral City, surrounded by mud
13 people - rescued San Diego River
Boulders/rocks the size of a van on I-8 In Ko Pah
Flooding on Highway 78 closure at Yaqui Pass and San Felipe wash
Rainfall occurred 4 AM to midnight
Areas flooding Perris and Hemet
13.11 inches mission creek 8000 feet white water river
1.5 to 3 inches in Coast Valleys in 18 hours.
2 to 5 inches lower deserts
2 to 6 inches high desert
Widespread 5 to 10 inches San bernardino and Riverside
Ranchita 6 inches of rain up to 1.3 per hour
Raywood flats 11 inches ran up to 2 in./h at peak
Streams and rivers a peek 3 to 6 PM in a secondary Peake 10 PM to 1 AM in high elevation drainage
Broken stream gauges on White water river
San Diego River forecast and reached 9.8 feet
Mt Laguna 7 inches of rain in 12 hours
Mt San Jacinto 9.8 inches are in 18 hours.
Burns Canyon 5.5 inches of rain in Johnson Valley desert
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