Atmospheric rivers are long, narrow corridors that transport large amounts of water vapor through the sky. Explore how winds, moisture and terrain can turn that invisible flow into beneficial rain or damaging floods.

Inside this episode:

- A river made of moving air
- Where the moisture comes from
- Why a narrow band carries so much
- The mountain squeezes out the water
- Benefit and hazard

Sources include NOAA, What are atmospheric rivers? and NOAA PSL, Atmospheric Rivers education PDF.

This episode is a researched narrative summary. Historical records may be incomplete, translated differently, or interpreted differently by scholars. We distinguish documented facts, estimates, disputed interpretations, and later stories where material. Corrections are logged and incorporated into future editions.

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