Cloud Types
Cloud Types : A visible body of fine water droplets or ice particles suspended within the atmosphere. There are a significant number of different types of clouds; however, there are three key cloud types that are particularly important for wildfire suppression activities because they can be used as a visual indicator of atmospheric stability: (1) Stratus clouds - low altitude clouds (below 6,000 feet) with a flat or sheet-like appearance which develop within a stable layer of the atmosphere. (2) Cumulus clouds - clouds with strong vertical development (below 6,000 feet) which develop within an unstable layer of the atmosphere. Cumulus clouds often have a lumpy or piled up appearance. (3) Cumulonimbus clouds - clouds with very strong vertical development which develop within an unstable layer of the atmosphere. The base of cumulonimbus clouds is near to ground level and they can extend vertically beyond 50,000 feet. Cumulonimbus clouds sometimes have a characteristic anvil shape. (4) Fog - A cloud with its base on the ground surface
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