PORTLAND, Ore. (KOIN) – We start the new week with either a mix of sun and clouds or sun and wildfire smoke. Depending on where you’re at, you will experience one or the other, potentially both.

Wildfires generate vast plumes of smoke, which can reach the humid upper atmosphere, cool down and develop into clouds that can remain there for months, warming the air, drying out the earth and ...

"It's just another way that smoke-cloud interactions are a wild card in the region." You Might Also Like. Raindrops Are Surprisingly Similar on Other Planets. April 21, 2021.