The strongest and potentially wettest storm of the winter season is bearing down on Southern California this week, threatening to unleash debris flows in burn areas in Orange and Riverside counties as the region’s wild winter continues.

The atmospheric river-fueled storm, packed with subtropical moisture, will take aim at large swaths of the already-soaked state beginning early Wednesday and lasting through Thursday.

The amount of precipitation from the storm will vary depending on the region, with San Diego, Orange and Riverside counties likely to be pounded with up to 2 inches of rain along the coast and up to 10 inches at higher elevations. This could create a dangerous situation for residents in recent burn areas, according to the National Weather Service.

Forecasters predict the Holy fire burn scar will see 2.5 to 6 inches of rain, while the area affected by the Cranston fire last year will likely experience 3 to 8 inches of precipitation through Thursday. That has the potential to trigger debris flows and flooding, according to the weather service.

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