with warm bases once ice has formed due to an explosion of ice splinters and fragments caused by secondary ice-forming mechanisms associated with large drops; and 3) perhaps most surprising to the Bulletin reader: we don’t yet know what the true concentrations of ice particles are in clouds...
they are known as nimbostratus clouds. These are unusually dark, heavy and full of moisture, and are an indicator of a rainy day. Stratus clouds that form at elevations from 2,000 to 7,000 meters (6,500 to 23,000 feet) are known as altostratus clouds. Because the air is colder at h...
It's a good thing I can check professionally obtained weather forecasts in a number of different ways. I wouldn't have done well in the days when people had to look outside to predict the weather. Cumulus clouds and nimbostratus clouds are all the same to me!