#2275 "Shelf Cloud Sunup"

The thunderstorm complex that kept rumbling all night across southern Ontario and was finally reaching Singleton Lake in the early morning hours. The air was heavy with heat and humidity even at 8:30 am on Wednesday August 21st, 2019.

I took the memory into the studio the next day.

The warm air mass was extremely unstable. Several vertical towers erupted on the wedge of the shelf cloud itself. The dark shelf cloud is formed when the air pulled to the ground by the heavy thunderstorm rain spreads out and lifts the warm and moist surface air to the lifted condensation level. Torrential rain brought only about 10 mm of accumulation. That rain fell in a very short time though.

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