One of my favorite photoblogs is the Earth Science Picture of the Day (EPOD), and sometimes you’ll see photos from Michigan in Pictures there and vice versa. The EPOD is produced by the NASA Earth Sciences Division, and every day their stalwart blogger Jim Foster works with photographers all over the planet to highlight amazing things. In June the EPOD posted a cool photo of a roll cloud over Calgary, explaining:
Roll clouds are a type of arcus cloud often associated with turbulent weather. As is the case here, they sometimes look like a horizontal tornado. Although these cylindrically shaped clouds look quite fierce and may be observed to roll about their horizontal axis, they don’t usually generate dangerous winds. Roll clouds are typically found behind outflow boundaries but unlike shelf clouds are detached from any close-by cumulonimbus cloud.
More wild Michigan weather on Michigan in Pictures!