Natural Disaster Risk — ZIP Code 99139

Natural Hazard Profile: ZIP 99139, Washington

Located in the Pacific Northwest, ZIP 99139 serves the Ione community. The oceanic climate of this part of Washington — bringing mild, rainy winters west of the Cascades and semi-arid conditions to the east — directly shapes the hazard exposure for properties in this postal area.

ZIP 99139's overall natural disaster risk is rated 4.6/10 (Moderate) by FEMA's National Risk Index. Slope instability and debris flows are the primary natural hazard, driven by a combination of local geology, precipitation intensity, and terrain that creates susceptibility to failure. Secondary hazards include avalanche and wildfire.

Relative to other U.S. communities, ZIP 99139's natural disaster risk is near the U.S. national average of 4.5/10, slightly below the 5.8/10 state average. The hazard distribution here is led by landslide and avalanche, as measured by FEMA across Washington. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

With a moderate risk rating, ZIP 99139 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.