For fourteen years, Dennis Weller has photographed the sky from the same folding chair in his driveway. He has binders for cirrus, folders for thunderstorms and a separate envelope labeled “clouds that are acting weird.” Last Tuesday, according to Weller, every cloud over his block was replaced while his neighbors were looking at their phones.

DENNIS HAS RECEIPTS

Not financial receipts. Cloud receipts: 6,218 photographs printed at a drugstore and organized by date. At 1:42 p.m., his picture shows a broad cloud over the water tower. At 1:51, a different cloud occupies roughly the same patch of sky. Meteorologists call this weather. Dennis calls it turnover.

NOBODY SAW THE SWAP

We interviewed six neighbors. Four were on their phones at the time. One was inside. One said, “Dennis has been doing this since Obama.” This did not answer our question, but it did establish a timeline.

Old clouds have softer edges. These had that new-cloud look.— — Dennis Weller, amateur sky archivist

A METEOROLOGIST VISITS THE DRIVEWAY

Dr. Lena Ortiz compared Weller’s photographs and explained that wind continuously reshapes and replaces visible cloud formations. Dennis listened politely, then produced a photograph with a ruler taped to it. Ortiz looked at the photograph, looked at Dennis and asked whether he had considered birdwatching.

THE SEAM

Weller’s favorite image contains a dark horizontal mark along one cloud. He believes it is a manufacturing seam. Ortiz identifies a utility wire crossing the frame. Weller has moved the wire photograph into a new binder titled “Infrastructure Cooperation.”

At sunset the suspicious clouds dissolved naturally. Dennis considered this retrieval. He returned his folding chair to the garage and set an alarm for 6:30 a.m. “They’ll need replacements,” he said.