Weather Tidbits: Cirrostratus April 24, 2020 Ulises Garcia, The last of the high clouds is featured in this Weather Tidbits which is the cirrostratus. This thin cloud is formed from ice crystals and is known for producing halos, sun dogs & iridescence. Categories: Weather Tidbits Tags: 47abc weather, cirrostratus, clouds, delmarva, Weather tidbits, wmdt weather FacebookTwitter