CW3E Event Summary: 4-6 February 2024
14 February 2024
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Major CA Winter Storm (4-6 Feb 2024)
Overall summary:
- A strong atmospheric river (AR) impacted much of California on 4-6 Feb 2024.
- It was an AR3 in the Santa Barbara base on the Ralph (2019) AR scale.
Precipitation impacts:
- Widespread precipitation of 1-5” fell across most of California with 5-10” in the coastal mountains and Los Angeles Basin. Some areas of the San Gabriel Mountains received 10-15” of precipitation.
- Los Angeles recorded one of its wettest multi-day stretches on record.
- Heavy rain resulted in hundreds of mudslides and high flows on area rivers.
- Year-to-date percent of normal snowfall increased by 10-20% across the Sierra Nevada mountains.
Wind and power outages:
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- Storm produced widespread winds of 60+ mph across northern California with local peak wind gusts around the San Francisco Bay Area of 80-100 mph.
- Strong winds and wet soils felled hundreds of trees.
- A reported 1.4 million customers were without power at various points across the state.
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Summary provided by: P. Iniguez, C. Castellano, J. Cordeira, , J. Kalansky, S. Roj, and M. Steen.
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