I made time to paint. The cold frontal convection was setting up and I thought that it would be fun to try to capture the moment under the shelter of the balcony. This was a thunderstorm although I could not hear the thunder until after it passed. The cell turned right as it crossed the St. Lawrence which is a clue that it was a supercell. It changed so quickly that I just blocked in the colours and shapes. An area of dark heavy rain was followed by a whiter swath of heavier rain and I believe some hail. The updraft was definitely tilted to the northwest. The outflow winds stirred up the waves which were then pounded down by the heavy precipitation. The cloud elements really were that dark.
The cloud has a green lining because the canvas was tinted a cool green but also because the rain is much needed for the ecosystem of the St. Lawrence river valley and the low water levels of the summer of 2010. The cloud also blocks a fair bit of the harmful UV radiation. In fact I much prefer a cloudy day when I am en plein air. There was no way I could have painted this cell from the field.
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