Started 10 am Wednesday August 7th, 2013.The warm front moved north of Singleton Lake overnight. Brisk and warmer southerly breezes were the clues to this fact. A low level jet at the top of the planetary boundary layer had created some streets of cumulus fractus which were in the front of the scene. Convection was likely occurring where this low level jet intersected the warm front to the north. The southerly streets of stratocumulus on the western horizon merge into a solid cloud sheet until it gets overhead and you can see between the streets. The higher level deformation zone was evident behind the stratocumulus. This is the leading edge of the convection along the cold front.
A quick look at the radar and satellite confirms the sky reading - more or less. There is a second low level jet further west but still ahead of the surface cold front. Environment Canada has some watches out but no warnings as of yet and nothing for Singleton Lake. Maybe I will paint a thunderstorm this afternoon.
http://fineartamerica.com/featured/summer-morning-phil-chadwick.html
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