If you're a dedicated trout bum like myself you watch the weather a lot. I don't mean to make sure you wont be rained on or to see if you'll be able to feel your fingers that morning. If you know me then you know I don't care about a little rain and a cold day to me means no body else on the water. I watch the weather to see what it is doing. See knowing what the weather has been doing and what it is going to do tells me a lot about what the fishing is going to be like for the day. See as the weather changes so does the barometric pressure. How does this affect the fishing? A trout has a small bladder called a swim bladder which acts as a buoyancy compensator. As the barometric pressure changes trout can feel those changes on their swim bladder. Think of a time that you ate way too much and felt like crap all day. The average measurement for atmospheric pressure is around 30 inHg (inches of Mercury) with 30.5 being an extreme high and 28.5 being an extreme low. Consequently, a rapid rise or fall or and extended period of extreme high or low can make a difference in the quality of fishing on any given day. A slight change of just +/- 0.02 inHg is enough to affect a trouts eating habits. Having flash backs of high school biology? Here is a easy chart that I think will help.
|I hope this helps.|
|See you on the trail,|