#2177 "Cold Frontal Cirrostratus"

My friend Robert P. Hedden was the founder and moving force behind the Plein Air Painters Thousand Island Region (PAPTIR). They have visited Singleton Lake many times before. Wednesday September 5th was the 2018 visit.

The temperature was in the mid thirties and the humidex was well into the forties. Even the gusty winds off Singleton Lake felt more like blasts from a furnace. I had to remain in the shade to paint. I went up to paint the approaching cold front beside Bob Hedden. The cold front was not supposed to arrive until after midnight but the clues were already in the midday sky.

The warm conveyor belt has an important component that sweeps northward ahead of the surface cold front. The cirrostratus was the only clue that a cold front was poised to the north. Of course anything had to be cooler than the blast furnace breeze in the warm sector. Towering cumulus occasionally shot upward into the atmosphere well to the north. A large thunderstorm did get going but it remained 100 km to the north before turning to the southeast. There was lots of wind shear in the unstable environment. Severe thunderstorm watches and warnings were out for these storms.

Linda and I watched them sparking away to the north after sunset. They all missed Singleton. You could count the rain drops.

I was still using the oils from the Dumoine River Trip of early August and they were getting even thicker under the heat.

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