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Freezing and Dense Fog Advisories Cut Oregon Visibility to 1/4 Mile Through Midday Saturday

Stagnant air is trapping pollution near the ground, prompting burn restrictions from state air-quality agencies.

Overview

  • The National Weather Service’s freezing fog advisory covers Central Oregon until noon, with visibility dropping to a quarter mile or less.
  • A dense fog advisory is in effect for the Lane County Lowlands until noon, warning of similarly limited visibility and difficult travel.
  • Supercooled droplets can freeze on contact to form rime and near-invisible black ice, increasing crash risk on roads and slickness on sidewalks.
  • Drivers are urged to slow down, use low-beam headlights instead of high beams, leave extra following distance, and pull into a safe location if visibility nears zero.
  • Poor dispersion under an Air Stagnation Advisory is degrading air quality, and officials recommend avoiding outdoor burning and minimizing residential wood smoke, especially for those with respiratory conditions.