The phrase "a band of clouds" is correct and usable in written English.
It can be used to describe a group or formation of clouds in the sky, often implying a specific shape or arrangement.
Example: "As the storm approached, a band of clouds stretched across the horizon, darkening the sky."
Alternatives: "a cluster of clouds" or "a formation of clouds".
During the Olympics, technicians fired off 1,100 rockets that delivered chemical catalysts into a band of clouds, and, according to the Chinese media, provoked rainfall that might have otherwise soaked the opening ceremonies.
On October 10, a well-defined low-level circulation developed as a band of clouds formed in the northern portion of the system.
A band of cloud spread across most of England and Wales, and showers continued in Scotland and Northern Ireland.
A research flight off Southwest England gathered vital details about temperatures and water movements inside a band of cloud.
Brown et al. [5] examined the South Pacific Convergence Zone (SPCZ), which is a band of cloud and rainfall in the south-west Pacific.
Sunset itself, behind us, was four bands of color from the horizon: a deep orange-red with darker, greyer, less saturated red where there was a band of cloud; then tangerine, pale yellow, and a top layer of a darkish grey-green variety of yellow — above that, sharply delimited, a wide band of aqua shading into royal blue then black: the whole thing like a rainbow with the blue side stretched out.
Familiar vignettes stream by outside: a power station, a patch of waste ground, a postal depot, a copse of ancient trees, a group of schoolgirls in grey-and-blue uniforms, a band of cumulus clouds spreading from the west, a shopping mall across a motorway, some underwear swaying on a line, and then gradually, the backs of suburban villas, heralding the train's arrival into central London itself.
Continued effects from shear stripped the cyclone of all deep convection, and by September 14 only a band of cirrus clouds remained in association with Uleki.
One new feature found by the group is a scalloped band of clouds just south of Uranus' equator.
Forecasters had expected that a spinning band of clouds near its center, called the inner eyewall, would collapse and be replaced by an outer band that would then slowly contract.
The structure became asymmetric, with a large band of clouds extending well south of the circulation.
