Southern California is bracing for a wet Christmas week, with a Pineapple Express storm set to bring widespread rain beginning Tuesday, NBC4 reports. Monday will be dry with highs around 67°F in downtown LA, dropping to 59°F by Friday.

A flood watch is in effect from Tuesday afternoon through Wednesday evening for much of Los Angeles County, particularly in foothill and mountain areas, including recent burn scars, due to potential mud and debris flows. Rain will arrive in multiple waves, with light to moderate showers Tuesday, heavy rain and strong winds on Christmas Eve, and continued periods of rain on Christmas Day.

Friday and Saturday will see sporadic showers from a moist south-southwest flow, with rainfall generally under a quarter inch per hour. Officials warn of flooding, hazardous mountain conditions, and possible travel disruptions throughout the week. Residents are urged to take precautions and stay updated on weather alerts as the storm moves through the region.

The rainy forecast marks a dramatic shift from the week’s dry start, bringing several inches of much-needed precipitation to Southern California ahead of the holiday.