OTHR EIS
US Air Force logo

Homeland Defense Over-the-Horizon Radar
at Northwest Region United States
Environmental Impact Statement

A diagram depicting transmission of radio signals for radar from a transmitter. They go up to the ionosphere, back down to the earth's surface, and, if it hits an object, it bounces back to the ionosphere and then to the receiver.

Project Schedule

Notice of Intent Publication: April 18, 2025

Public Scoping Period: April 18, 2025 through June 2, 2025

Notice of Availability Publication: September 8, 2026

Draft EIS Public Comment Period: September 4 through September 19, 2026