High-altitude cirrus, cirrostratus and middle-altitude altostratus clouds are found well in advance of the front.    From Wordnik.com.  [Air masses and frontal transitional zones] Reference

Along the gently sloping warm front, the lifting of moist air produces first nimbostratus clouds followed by altostratus and cirrostratus.    From Wordnik.com.  [Mid-latitude cyclone] Reference

On this day, however, the sky, layered with thin altostratus clouds and smog, appeared to reflect human suffering and failed to awaken in Claude visions of paradise.    From Wordnik.com.  [La insistencia de Jürgen Fauth] Reference

Ever wonder why you don't get drizzle from altostratus or cirrostratus clouds?.    From Wordnik.com.  [RealClimate] Reference

We would call out, cirrus, cumulus, stratus, altostratus and cumulonimbus from the back seat.    From Wordnik.com.  [ABC 4: Top Stories] Reference

These are people who walk around staring into the sky (I imagine there's stumbling involved, too), mumbling to themselves about nimbostratus, altostratus and, if they're in a particularly buoyant mood, the finer points of frontal lifting.    From Wordnik.com.  [Toronto Sun] Reference

According to meteorologists, there will be a layer of scattered stratocumulus clouds between 2,500 feet and 5,000 feet, scattered altostratus clouds between 10,000 feet and 12,000 feet, and scattered cirrus clouds between 28,000 feet and 34,000 feet.    From Wordnik.com.  [SPACE.com] Reference