The National Weather Service updated 48-hour rainfall totals Thursday morning for the ongoing atmospheric river storm impacting Southern California. Several areas had already received half a foot of rain by Wednesday afternoon, and totals continued rising overnight, with more precipitation forecast throughout Thursday.
Some locations in the Los Angeles County foothills reported over a foot of rain, while other spots across the Southland recorded upwards of ten inches.
Los Angeles County
Metropolitan
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Monte Nido: 3.62 in
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Bel Air: 3.12 in
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Big Rock Mesa: 2.99 in
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Downtown LA: 2.66 in
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Hollywood: 2.66 in
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Beverly Hills: 2.64 in
San Fernando/Santa Clarita Valleys
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Newhall: 5.98 in
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Pacoima: 5.51 in
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Canoga Park: 5.47 in
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Chatsworth: 5.18 in
San Gabriel Valley
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Eaton Dam: 4.12 in
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Eagle Rock Reservoir: 3.78 in
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Mt. Olive High School: 3.44 in
Mountains/foothills
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San Gabriel Dam: 12.43 in
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Crystal Lake: 12.13 in
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West Fork Heliport: 7.72 in
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Warm Springs: 6.59 in
In the L.A. County desert, Palmdale and Lancaster received 1.89 inches and 2.22 inches, respectively.
Ventura County
Coastal
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La Conchita: 4.26 in
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Oxnard: 4.12 in
Western Valleys
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Matilija Dam: 8.75 in
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Ojai: 6.70 in
Mountains
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Old Man Mountain: 10.83 in
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Nordhoff Ridge: 9.09 in
Orange County
Coastal
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Coto de Caza: 2.40 in
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Fullerton Creek: 2.21 in
Santa Ana Mountains
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Upper Silverado Canyon: 4.68 in
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Coldwater Canyon: 4.13 in
San Bernardino County
Valleys
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Larson Ranch: 4.05 in
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Glen Helen Regional Park: 3.55 in
Mountains
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Middle Fork Lytle Creek: 12.32 in
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Wrightwood: 9.89 in
High Desert
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Mojave Forks Dam: 5.86 in
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Hesperia: 2.76 in
Riverside County
Valleys
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Temescal Fire Station: 2.64 in
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Prado Dam: 1.74 in
Mountains
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Mount San Jacinto: 2.99 in
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Snow Creek Trail-Idyllwild: 2.64 in
Coachella Valley
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Morongo Valley: 1.70 in
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Palm Desert: 0.23 in
The NWS warns that the “long duration atmospheric river event” is not over. Additional impulses moving through the area Thursday and Friday could bring heavy showers and a slight chance of thunderstorms, with a high potential for flooding. Conditions are expected to improve by late Friday, with dry and warmer weather returning for the weekend and into the middle of next week.
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