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The thing I remember the most from middle school was learning about the different types of clouds: Stratus, Startocumulus, Cumulus, Cumulonimbus, Altostratus, Altocumulus, Cirrus, Cirrocumulus.
Altocumulus - the mid level stuff (cast studies) 10: 30 Case Study: MyWorldCup. com - Brian Norman, Earthware
Altocumulus stratiformis, forming at mid-levels in the atmosphere and signalling the eventual arrival of the occluded front discussed in Tuesday's blog.
Altocumulus clouds often precede rain showers or snow flurries.