Key Highlights
- The heaviest rain from this storm is expected to hit Saturday.
- Los Angeles County issued evacuation warnings as the storm approached Southern California.
- Rainfall could bring an end to fire season but also risks of flooding and mudflows.
- The potential for significant mud and debris flows exists, especially on Saturday.
SoCal Braces for Intense Rainstorm: Evacuation Warnings Issued
As an atmospheric river approaches Southern California, the region is bracing for what meteorologists are describing as a potential record-setting rain event. The storm, forecast to peak on Saturday, has prompted evacuation warnings across Los Angeles County due to the heightened risk of flooding and mudflows.
Potential Impact
According to the National Weather Service (NWS), downtown Los Angeles is expected to receive 2.62 inches of rain from Friday morning through Sunday, a significant amount that could lead to minor river swelling and debris flows. There’s a 30% chance of even higher precipitation, reaching up to 4.81 inches over the same period, which would significantly increase the risk of substantial mud and debris flows.
High Risk Saturday
The day of highest risk is forecast for Saturday when there’s a “pretty substantial potential” for heavy rain, with a reasonable risk for flash flooding and debris flows. Ryan Kittell, a meteorologist from the NWS office in Oxnard, emphasized that while 99% of the area will not experience severe conditions, residents should be prepared to change any outdoor plans.
“Consider changing any plans that you might have for Saturday. Stay home and indoors, and it’ll protect you from all these hazards,” Kittell advised. “If you hear thunder or see lightning or rapidly changing winds, no need to panic.
Just go inside. Stay away from the windows, and you should be fine.”
Local Variations
While downtown Los Angeles is at the center of this forecasted heavy rainfall, other areas are also expected to experience significant precipitation. Long Beach is projected to receive 2.38 inches, Redondo Beach 2.48 inches, and Santa Barbara as much as 4.21 inches.
“The most concerning peak is from Friday night through Saturday,” Kittell noted, adding that peak rainfall rates could be between 0.75 and 1.25 inches per hour in Southern California.
Other Impacts
Meteorologists warn that while the storm may end the fire season by bringing much-needed rain, it also carries a risk of damaging mudflows. The region has seen extraordinary fire risks in recent years due to climate change and development in fire-prone areas.
“This will certainly help,” Kittell said about the potential rainfall. “If we do end up getting the rainfall that we expect, this will certainly get us close to the end of the fire season.”
However, there is uncertainty regarding how intense the storm will be, and forecasters are closely monitoring multiple computer projections. While some models suggest a moderate-to-heavier rain scenario, others indicate a possibility of less rain due to the “cut-off low” nature of the storm.
Conclusion
The upcoming atmospheric river storm is poised to bring significant rainfall to Southern California, potentially ending a long fire season but also increasing risks of flooding and mudflows. Residents are advised to stay informed about weather updates and prepare for potential hazards as the storm approaches on Saturday.
