Along with a change of seasons comes weather cloud banding. Banding is directional and shows changing incoming and changing weather fronts, and can determine the relative level of airborne pollution in general and the directional source point. It indicates a change from complete overcast and rain to a breakup in the clouds and the forthcoming of good astronomical weather.
The top photo, behind 101, is taken April 16 at 2:20 pm with a handheld iPhone XS Max 4.25mm f1.8 at ISO 25 and a 1/1136 second exposure. Below shows more banding at 3:53 pm, about an hour and a half later. It was shot at 4.25mm f1.8 ISO 25 and 1/537 second exposure.
