Why Landslide Preparedness Matters
The largest landslide in the U.S. was the 1980 eruption of Mount St. Helens. In the United States, landslides affect Pacific Northwest and California, but preparedness principles apply regardless of where you live.
The difference between a close call and a tragedy often comes down to preparation made weeks or months before the event. People who have rehearsed their evacuation routes, stocked their emergency kits, and established family communication plans consistently fare better than those who rely on improvisation under pressure.
What to Do Before a Landslide
Before the threat arrives, your goal is to reduce risk, build supplies, and establish a clear plan. Start with a household meeting to assign roles — who grabs the emergency bag, who is responsible for pets, who picks up children from school if evacuation orders come during work hours.
Sign up for your local emergency alert system. Most counties have a free text and email notification service that will push landslide warnings directly to your phone. This is faster and more reliable than TV or radio in the critical first minutes of a warning.
What to Do During a Landslide
- Evacuate immediately if advised by authorities.
- Avoid areas near steep slopes and cliffs.
- Listen to emergency broadcasts for updates.
- Check on neighbors who may need assistance.
What to Do After a Landslide
After a landslide, resist the urge to return home or begin cleanup until authorities confirm it is safe. Document all damage with photos before making repairs or touching anything. Contact your insurance company immediately. If you are displaced, register with FEMA at DisasterAssistance.gov — registration opens federal aid programs including temporary housing assistance, home repair grants, and low-interest disaster loans.
Monitor yourself and family members for signs of stress or trauma in the days and weeks following a landslide. Crisis counseling and mental health resources are available through FEMA's Disaster Distress Helpline (1-800-985-5990).
Most Affected Regions
Landslides most commonly affect Pacific Northwest and California in the United States. Residents in these areas should have landslide-specific plans and know their local warning systems.