Beech leaf, stream ice
Last week was extremely cold in the Boston area – single digits, negative wild chills. When it gets that cold streams and brooks form beautiful ice patterns. Sometimes streams accumulate star-shaped ice crystals on the icy surface (I call them ice flowers), and there also can be tiny delicate ice crystals. I’ve seen a bit of water vapor blown by breezes above the ice surface at around 5 to 10 deg F, just enough for these pretty things to form.
At one stream, I found rippling ice patterns formed as the water was freezing, one small ice star, and a beech leaf together: