I've read that drastic barometric changes trigger deer movement. On a weather map when there are lines dividing areas of different barometric pressures, the closer these lines are to each other the more rapidly the pressure is changing. So supposedly a drastic swing in pressure, up or down makes for good hunting. Although I've found this to be true quite often, I don't think it's the only thing influencing movement. For me, if I have time to be hunting, it's a good day to go! <img src=icon_smile_wink.gif border=0 align=middle>