Californians are being warned to prepare for the potential impact of Tropical Storm Marie, which is currently churning in the Pacific and could bring significant weather changes to the region as the Labor Day weekend approaches. Los Angeles County officials have issued advisories, urging residents not to be complacent due to Southern California's typically mild climate. The Los Angeles County Sheriff’s Department cautioned, “Don’t underestimate the storm.”
While Marie's precise trajectory is still uncertain, some weather models indicate a possibility of the storm nearing Southern California, potentially bringing heavy rainfall, powerful surf, gusty winds, and the risk of dangerous flooding. One model has even suggested the potential for hurricane-force winds, though meteorologists consider this scenario less likely.
This storm threat is occurring against the backdrop of a larger weather pattern. The National Oceanic and Atmospheric Administration (NOAA) forecasts wetter-than-normal conditions across much of the Western U.S. through mid-September, attributed to a strengthening El Niño. Southern California and southwestern Arizona have a 50% to 60% chance of experiencing above-average precipitation between September 9 and September 15, according to NOAA's Climate Prediction Center.
For the immediate Labor Day weekend, forecasts remain fluid. While light to moderate rainfall, generally less than an inch, is anticipated for most areas, forecasters emphasize that conditions can change rapidly based on the storm's path and intensity. Even without a direct landfall, Southern California's coastal areas could face significant effects, including large waves and dangerous rip currents, with a moderate possibility of coastal flooding at south-facing beaches.
Officials are advising residents to take proactive measures. Potential hazards include flooding in areas near creeks, rivers, drainage channels, washes, low-lying neighborhoods, mountains, and recently burned hillsides. Mud and debris flows, rockslides, downed trees, and power outages are also possible.
The Sheriff’s Department has provided specific preparedness guidance: clear debris from gutters and storm drains, secure outdoor furniture, charge electronic devices and backup batteries, inspect vehicles, and stock essential supplies such as food, water, flashlights, and medications. Residents are also encouraged to identify multiple evacuation routes and make plans for children, elderly family members, neighbors requiring assistance, and pets.
Authorities are reiterating a critical safety message for flooded areas: “turn around, don’t drown.” Just six inches of moving water can be enough to knock an adult over, and deeper water can sweep away vehicles. Drivers are strongly advised against attempting to cross flooded roads or drive around barricades. Staying away from rivers, washes, creeks, and flood-control channels during dangerous conditions is also paramount. The Sheriff’s Department emphasized, “If you’re told to evacuate — don’t wait.”
With Tropical Storm Marie still developing offshore and the El Niño pattern potentially contributing to increased rainfall, Californians are urged to prepare for a potentially disruptive holiday weekend.