#2525 "Morning Altocumulus Castellanus"

The clouds in the morning sky revealed the weather story. The convective altocumulus castellanus were sheared with the southwesterly winds. The gravity waves embedded in the stable layer of the warm frontal surface also revealed the southwesterly winds of the warm conveyor belt. The mixing layer of the warm front occupied a depth of a thousand feet or more. The gravity waves are darkest where the cloud is thickest about that particular line so they actually correspond to where there is an updraft in the wave. The lighter portion of the clouds are when the air is descending within that wave and there is less cloud above to block the light. A simple graphic would explain this better. 

The cirrostratus that blanketed the highest levels of the warm conveyor belt, provided a bright white backdrop to the story-telling clouds. "Cirrostratus coming at us" was the name of this short story and rain was on the way. I tried to get the meteorology accurate in those oils without ignoring the artistry and natural composition of the weather and nature. We only received about 16 mm of rain from the event that followed with most of the liquid passing to our north. Ottawa observed around 35 mm of rainfall. 

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