ISTANBUL Two people were found dead Sunday in floodwaters in the northern part of the US state of California from a storm fueled by an atmospheric river that brought a record amount of rain. The heavy rainfall caused rivers and creeks to overflow, creating hazardous conditions on roads. Atmospheric rivers are relatively long, narrow regions in the atmosphere – like rivers in the sky – that transport most of the water vapor outside of the tropics, according to the National Oceanic and