Both this last Saturday & Sunday we experienced late afternoon, booming thunder, faint lightening bolts & drizzle. This climatic change was welcomed since we have had an extended period of hot weather & cloudless skies.
If this weather pattern continues it bodes well for the fly angler to adjust their tactical thinking. Specifically, there may be 1) cooler flows because of more cloud-cover 2) more extended periods of bug emergences instead of those of short duration and 3) less wary trout because less bright sunshine will encourage longer stays in feeding lies; in lieu of protective holds and cover. Hence, more chance at opportuntinistic drift feeders.