Next Snow System Moving in Tuesday Night Snow is expected Tuesday evening in the Bozeman area and the National Weather Service has issued a Winter Weather Advisory. The storm is expected to drop three to five inches in the valleys and up to seven inches in the mountains. The advisory is in effect until 11 p.m. Wednesday. With this storm they are calling for: 3 to 5 inches for the Bozeman area Up to 7 inches expected for upper elevations Winds gusting up to 35 mph Reduced road conditions Difficult travel especially for mountain passes The Winter Weather Advisory is in effect for Madison and Gallatin Counties. Local passes including Raynolds Pass, Bozeman Pass, and Targhee Pass are expected to see poor travel conditions. The snow is forecast for most of the week with several inches expected Wednesday, Thursday, Friday, and into the weekend.