The "bomb cyclone" has hit northern California, bringing an "atmospheric river" of rain and with it, urban flooding and mudslides in recently burned areas. By the time the storm clears out, some areas will have received as much as a foot of rain, while eight feet of snow could fall in the mountains over 8,000 feet.
- Mudslides have already caused Highway 70 to close in the Feather River Canyon near Oroville.
- Rain over wildfire burn scars is particularly dangerous, as the vegetation that burned away is no longer able to hold the soil together.
- Earlier this year, the remains of a 17-year-old boy were found more than three years after a Jan. 8, 2018, mudslide in Montecito, California, that damaged or destroyed hundreds of homes and closed a 30-mile section of U.S. Highway 101 near Santa Barbara. The teen is one of 23 people who died. The slide happened after torrential rains hit the area burned by the 280,000-acre Thomas Fire that began a month earlier.
- The rain won't do as much as one might think to fill reservoirs after years of drought.
- The ground is so dry that it will soak up most of the water, rather than letting it run off into streams and then into reservoirs.
- The storm will spread southward throughout the remainder of Sunday and Monday. Rain should peak midday Monday in the Los Angeles area.