After wildfires burned tens of thousands of acres in parts of Los Angeles County, many evacuation orders have been lifted and residents are returning home.
However, just because the fire did not spread to nearby areas does not mean that homes in that area will not be damaged.
Burnt hillsides stripped of vegetation do not absorb water well, which can lead to flash floods and landslides that can collect debris and destroy structures in their path. The size of the mudflow depends on the intensity of the rainfall, the duration of the storm, and the amount of vegetation left to hold everything in place.
The city of Los Angeles issued an emergency order Tuesday morning in anticipation of possible rain in areas affected by wildfires. Gov. Gavin Newsom issued a similar order Monday. The forecast is for some rain over the weekend.
Los Angeles County is encouraging affected homeowners to prepare. Here’s some advice.
Assume that landslides and mudslides are more likely to occur in burnt areas, valleys, hillsides, mountains, and other steep areas. Make sure to prepare well before a storm hits. As a storm approaches, monitor Los Angeles County Public Works’ debris and debris flow potential forecast. Clear the path of debris. Always put protective equipment in place to deflect debris rather than dam it up or stop it. Be prepared to sacrifice some use of your property to achieve maximum protection. Work with adjacent affected property owners. Avoid changes to drainage patterns that could worsen the situation for your neighbors. Debris often enters buildings through windows, so be sure to board them up. Limit the height of plants near buildings to 18 inches. Use plants and shrubs that are less flammable and keep them watered. This not only helps prevent landslides and mudslides, but also helps with fire safety. Inspect the slope for increased cracks, holes, or other changes. Remove debris and dead/dry plants. Consult with a soil engineer or engineering geologist to minimize the potential effects of landslides.
In addition, authorities recommend always having the following items on hand, especially in hazardous areas:
Large capacity of water for the whole family Food for the whole family Toiletries and medicines Cash Pet food and supplies Tools Large first aid kit AM/FM radio and FRS radio Plug-in analog telephone Cash Important documents Blankets or sleeping bags for the whole family Prescription medications and Over-the-counter medications Flashlight – extra batteries and light bulbs Fire extinguisher – multi-purpose whistle labeled “ABC” Dust mask Basic first aid kit Pet disaster kit
County residents can sign up for the “LA County Alert” program to receive notifications where and when they may be at risk. Most local governments offer similar localized alerts.
A Pacific Palisades home was damaged in half when a hillside collapsed in the Pacific Palisades fire area last week. Before the collapse, the divided house was undamaged.
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