cirrus clouds

1. Lacy or wispy clouds that form at high altitudes, generally before a change in the weather.

Example Sentences

Wind shear can occur in wispy cirrus clouds or even in clear air near thunderstorms, as differences in temperature and pressure create powerful currents of fast-moving air.

From Seattle Times

Sun halos are optical illusions created when ice crystals form in the correct shape in the upper atmosphere, usually accompanying thin, wispy cirrus clouds.

From New York Times

Those harmless-looking vapor trails sometimes spread out to form thin cirrus clouds.

From Seattle Times

The remaining, thinner cirrus clouds would allow more long-wave radiation emanating from Earth to escape to space.

From Scientific American

Aside from those brief glimpses through the storm, the cirrus clouds resembled a flat blanket beneath the deep blue sky.

From Los Angeles Times