Related Clues:

• American liberty? Not American high point
• Something a lighthouse beacon cuts through
• Typical London weather
• Your Highness?
• Driving visibility problem
• Common San Francisco forecast
• Vision obscurer outdoors
• Obstacle to visibility
• Hazard for takeoffs and landings
• It 'comes on little cat feet,' per Carl Sandburg
• Low-visibility forecast
• Dense mist
• "Pea soup" weather
• Low-hanging clouds produce it
• Height about sea level, of a aircraft perhaps