![](https://i0.wp.com/www.flowvis.org/wp-content/uploads/2021/10/Skew-T2.jpg?resize=825%2C646&ssl=1)
I took this photo of cumulus clouds on September 27 around 3:30 pm in Boulder. Based on the Skew-T diagram they could have been 4 to 5 km in altitude. The photo was taken near east campus. The sun was shining brightly and shows up as silver lining of the clouds.