| ﺍﻟﺴﺤﺐ ﺍﻟﺮﻛﺎﻣﻴﺔ ﺍﻟﻤﺘﻮﺳﻄﺔ ﻭﻫﻲ ﻋﺒﺎﺭﺓ ﻋﻦ ﺳﺤﺐ ﺭﻛﺎﻣﻴﺔ ﺑﻴﻀﺎﺀ ﺗﺸﺒﻪ ﺍﻟﺴﺤﺐ ﺍﻟﺮﻛﺎﻣﻴﺔ ﺍﻟﻤﻨﺨﻔﻀﺔ ﻭﻻ ﺗﺨﺘﻠﻒ ﻋﻨﻬﺎ ﺇﻻ ﻓﻲ ﺍﺭﺗﻔﺎﻋﻬﺎ 8-4 ﻛﻢ ﻭﺳﻤﺎﻛﺘﻬﺎ ﻓﻘﺪ ﺗﺼﻞ ﺳﻤﺎﻛﺘﻬﺎ ﺇﻟﻰ 5 ﻛﻢ | |
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| ﻓﺈﺫﺍ ﻛﺎﻧﺖ ﻫﺬﻩ ﺍﻟﺴﺤﺐ ﻣﻜﺘﻤﻠﺔ ﻓﻲ ﻧﻤﻮﻫﺎ ﻓﺘﻈﻬﺮ ﻭﻛﺄﻧﻬﺎ ﺃﻛﻮﺍﻡ ﻣﻦ ﺍﻟﺴﺤﺐ ﻣﻜﺪﺳﺔ ﻓﻮﻕ ﺑﻌﻀﻬﺎ ﺍﻟﺒﻌﺾ ﻭﻫﺬﺍ ﻫﻮ ﺳﺒﺐ ﺗﺴﻤﻴﺘﻬﺎ ﺑﺎﻟﺴﺤﺐ ﺍﻟﺮﻛﺎﻣﻴﺔ |