1. Widespread opaque altostratus can produce light continuous or intermittent precipitation. 2. This resulted in the genus name altostratus for stratiform types in the same altitude range. 3. Altostratus can bring light rain or snow.4. If the precipitation increases in persistence and intensity, the altostratus cloud may thicken into nimbostratus. 5. Altocumulus and Altostratus are the main cloud types found in the middle levels of the troposphere. 6. Altostratus is usually composed of water droplets but may be mixed with ice crystals at higher altitudes.7. Altostratus tends to form ahead of a warm or occluded front, the altostratus gradually thickening into rain bearing nimbostratus.8. Altostratus tends to form ahead of a warm or occluded front, the altostratus gradually thickening into rain bearing nimbostratus. 9. The "'altostratus undulatus "'is a type of altostratus cloud with signature undulations within it. 10. The "'altostratus undulatus "'is a type of altostratus cloud with signature undulations within it.
