Natural Disaster Risk in Blocksburg

Natural Hazard Profile: Blocksburg, California

Blocksburg is a small unincorporated community in Humboldt County, in the western mountain region near the Pacific Coast. The area experiences dry summers and mild, wet winters with pronounced drought cycles, with a critical fire season from late summer through fall shaping the pattern of natural hazards that residents encounter. Understanding the local risk profile is essential for anyone living in, moving to, or owning property in Blocksburg.

FEMA rates Blocksburg's composite natural disaster risk at 5.5 out of 10 — moderate risk. The area faces significant landslide risk, where mountainous topography and saturated soils during wet periods combine to create hazardous mass movement conditions. Residents should also account for tsunami and earthquake risk in their preparedness planning.

Blocksburg's risk score, slightly below the 5.9/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Humboldt County, the highest-scoring are landslide, tsunami, and earthquake. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

With a moderate risk rating, Blocksburg residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for landslide is recommended.