Firehole River and Mammary Clouds-Vertical
$100.00 – $1,500.00
The Firehole River is surrounded by geothermal features which empty water into it via runoff channels. This raises the water temperature, as much as 5 to 10 °C (9 to 18 °F) higher than areas upstream of geothermal influence. Water entering the river from geothermal features contains dissolved chemicals and minerals. Mammatus or mammary clouds occur when strong cumulonimbus clouds have appendages protruding from the base of the cloud, which resemble the mammary glands of mammals. They indicate that the atmosphere is quite unstable and can also be an indicator of impending severe weather.