Los Angeles

NWS Issues Flood Watch Amid Predicted Thunderstorms and Heavy Rainfall

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Published on December 20, 2023
NWS Issues Flood Watch Amid Predicted Thunderstorms and Heavy RainfallSource: National Weather Service

Los Angeles is bracing for severe weather as the National Weather Service (NWS) has issued a flood watch for the region, forecasting heavy rain, thunderstorms, and potential flooding through late Thursday night. The city, which typically enjoys dry weather, is expected to be drenched with rainfall amounts ranging from two to five inches in most areas, and possibly exceeding twice that on south-facing slopes. According to the NWS advisory, L.A. residents should prepare to swiftly take action should flooding occur.

The coastal and valley areas, already soggy from recent storms, are set to receive even more rainfall, raising concerns about widespread roadway flooding and dangerous mudslides, especially in areas with steep terrain. The NWS alert, published early Wednesday, emphasizes the risk of flash flooding and debris flows, particularly around the South Fire burn scar in Ventura County. Moreover, residents should expect significant travel delays and potential road closures.

The rain is not just limited to a drizzle, with the possibility of thunderstorms likely after 5:00 pm today and continuing through Friday, reports the detailed forecast from the NWS. Besides the imminent road hazards, authorities are also concerned about high river flows and a non-negligible risk of the Ventura River flooding.

For those living in flood-prone zones, the message from meteorologists: vigilance is key. "There is a high risk of extensive roadway flooding, especially in low-lying areas," the NWS warning states. "There will likely be rock and mudslide activity on and below canyon and mountain roadways." Emergency services are preparing to deal with swift water rescues amidst such dangerous conditions. Likewise, those in the forecast area should be alert for possible flood warnings, and ready to take necessary safety measures quickly.