LOS ANGELES, Calif. – A Pacific storm system is making its way into Southern California, bringing the region its most widespread rainfall of the season so far. Meteorologists warn the system could produce heavy downpours, flooding, and potential mudslides in areas scarred by recent wildfires.
According to the National Weather Service, rain will begin Thursday evening and continue through the weekend, with showers possibly lingering into next week.
Heavy Rain and Flood Concerns
Forecasters say rainfall totals could exceed 2.5 inches in foothill and canyon areas, particularly in Altadena, Pacific Palisades, and other recent burn zones, where loose soil raises the risk of mud and debris flows.
“The biggest concern right now is flash flooding and mudslides in burn scar areas,” the Weather Service stated. “Residents should monitor alerts closely and be prepared to evacuate if conditions worsen.”
Steady rainfall will arrive with a cold front from the north, spreading across Los Angeles, Orange, Riverside, and San Bernardino counties by late Thursday night.
Storm Timeline and Expected Totals
Thursday Evening:
- Los Angeles and Orange Counties: Cloudy conditions with a 60% chance of rain at night. Highs near 72°F, lows around 56°F.
- Valleys and Inland Empire: Highs around 74°F, lows near 53°F. Up to 3 inches of rainfall possible Friday.
- Coastal Areas: Around 1 inch of rain expected by Friday evening.
- Mountain Regions: Highs near 59°F, lows dropping to 34°F. Mostly rain expected, with little to no snow accumulation.
- Deserts: Between ½ and 1 inch of rain, with highs near 74°F and lows around 47°F.
Friday–Sunday:
Rainfall will peak Friday, with intermittent downpours through the weekend. Coastal areas and inland valleys will see the heaviest precipitation on Friday afternoon into Saturday morning, while higher elevations will experience consistent rain through Sunday night.
Meteorologists also warn of strong winds accompanying the storm, particularly in mountain passes and coastal zones.
Burn Area Hazards and Safety Measures
The Los Angeles County Office of Emergency Management advises residents living near burn scars to remain alert for changing conditions and avoid driving through flooded roadways. Even small creeks and drainage channels may quickly fill during heavy downpours.
“If you live near a recent fire zone, have an evacuation plan ready,” officials said. “Mudslides can happen suddenly, often with little warning.”
Communities near the Bobcat, Palisades, and Eaton Canyon burn areas are under close watch for debris flow potential.
Looking Ahead
While showers may taper off briefly on Sunday night, meteorologists say another system could move in early next week, continuing the wet pattern into Tuesday and Wednesday.
Despite the rain, temperatures will remain mild, with highs in the upper 60s to low 70s across the coast and valleys.
Southern Californians are urged to stay updated on local forecasts, enable weather alerts on their devices, and report flooded or blocked roadways to local authorities.
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