In sultry conditions with a thunderstorm on the forecast, these windlanes can carry decent volumes of trout foods, and in this case, flying ants are swarming and ending up on the surface.
As the clouds approach and the light level drops the wild browns in Arthurs love ants and some of these dry fly fishing sessions can go for hours.
I find that when the fish are really up, using a mayfly emerger around size 14, which is a little bigger than the high volume of small ants, often results in a take. 
