The mechanism of Indian Summer

 

I was always worried about using that term, but it has it's origins in the late 1700's in the US, so you know it's acceptable.  :)  It's lazy, hazy days after the first cold spell.  Here, the Pacific plumes are slashing down and raising the fine, polluted air of the south.  Time to take the lawn chairs back out of storage, and read in the sun, with a beer.