The clouds over Lake Erie last Thursday looked like someone dragged a rake through them
I was up in Cleveland on a job last Thursday and stepped outside around 6pm to load tools when I looked up and saw these wild rippled clouds stacked all the way to the horizon. They looked like sand after the tide pulls back, just row after row of grooves. I grabbed maybe 15 pics on my phone and the guy whose house I was at said it happens a lot over the lake in spring. Is there a name for that pattern, or does it just mean wind is about to mess with us?
Man, I feel you on this one because I've had that same moment where you look up and just freeze with a wrench in your hand. Those grooved rows are called undulatus or wave clouds, and they form when stable air gets pushed up over something and starts rippling like water, usually when there's a big temp difference between the air and the lake below. Your guy was right that Erie loves doing this in spring, cold water plus warm air moving over it is the perfect setup. The good news is it doesn't always mean a storm is coming, sometimes it's just the atmosphere showing off. But yeah, wind is almost always part of the deal with those, so I'd keep an eye on the forecast either way.