Altostratus Clouds: Expect Light Rain

Altostratus clouds are mid-level, flat clouds that appear as gray or blueish-gray clouds expanding across the sky. These clouds are thin enough to allow a distorted image of the sun or moon to peer through. Altostratus tend to form ahead of a warm or occluded front. They can also occur together with cumulus at a cold front.

• Precipitation Cloud: Yes, light rain and virga.