Every cloud has a story to tell. This tale is from Monday July 4th, 2022. I was paddling with the family on Singleton Lake. The goal is to encourage others to take the time to look at those lines in the sky and to hear and understand what the clouds are saying.
The background explaining how a frame of reference attached to the mean flow in the atmosphere shapes the clouds can be found in Cloud Shapes and Lines in the Atmosphere. Additional blogs on similar topics can also be found. Trying to understand cloud shapes in a frame of reference attached to a spinning globe hides the actual simplicity behind patterns that form in fluids.
I will let the following images do most of the talking...
The cloud patterns were drifting toward the southeast revealing that the wind in the free atmosphere was northwesterly. The cloud bands were advancing slowly from the southwest with the warm conveyor belt (the warm orange arrow in the accompanying graphic).
|Conveyor Belt Conceptual Model - COMET|
The sky to the southwest was filled with a thin veil of cirrostratus cloud. The warm and moist air was rising along the constant energy surfaces as it approached from the south. As is typical for eastern Ontario, the anticyclonic companion of the warm conveyor belt would arrive at Singleton Lake first. The col in the deformation zone pattern was far to the northwest.
|Looking southwest from the middle of Singleton Lake|
midday July 4th, 2022
|The Wind Waves and Swells Explained |
Using Atmospheric Frame of Reference Winds
I do hope that this is clear and that I have not confused anyone... The bottom line of this weather story written in the clouds was that cirrostratus was coming at us and it would begin raining overnight. The rain would continue for more than a day with 11.2 mm being measured at Singleton.