A major storm is headed to the Santa Clarita Valley and the Southland, bringing concerns of flooding, mudslides, and putting residents in the Sand Fire on high alert.

The storm is expected to hit Santa Clarita on Thursday night, with a 90% chance of rain forecasted for the evening. By early Friday morning, heavy rain will hit: a 100% chance of rain is projected for all day Friday and continuing into the weekend, ending only on Saturday afternoon, when the chance of rain drops to 80% according to the National Weather Service.

In addition, rainfall rates are expected to be around one inch per hour, with rates ranging from two to six inches of rain for valley areas, as reported by the National Weather Service. This in turn is causing flooding and mudslide concerns, especially in recent burn areas where the rain may cause mudslides to occur.

Rain and thunderstorms may also hit the Santa Clarita Valley area on Saturday morning, especially after 10 a.m. However, the rain will likely pass by Saturday evening and leave a slight chance of rain for Sunday.

Currently, Sunday’s forecast is a complete turn from the storm that is soon to hit: the National Weather Service predicts the weather on Sunday will be mostly sunny with highs in the low 60s.