Curious. When we experience a drop in temp and rain like we currently are, is there a (historically/relatively)predictable change in hatches? In other words, if you were going fishing days just after a rain, could you make an educated guess on fly changes from the stable weather such as we've seen over the past couple of weeks. I recognize that this would vary from river to river, but looking for some insight from you keen entomologists.

Thanks!

Sean