Wind will wiggle directional antennas if the mounts aren't firm enough, and if the wiggling is happening at both ends and the distance is long enough, they can easily get out of touch.
On a 4.5 mile link over flat cropland, I think I see more link degradation due to ducting than to rain or snow, although I remember a storm that put an inch or two of icy snow on the enclosed Yagis, and the link was down until it melted. - John -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
