Strong east winds will develop through the weekend across Northwest and West-Central Montana, bringing hazardous boating conditions to area lakes and difficult travel to prone corridors. We have moderately-high confidence (75%) in sustained winds over 20 mph on Flathead Lake, with a 60% chance of gusts exceeding 30 mph. Wind strength is likely to peak Saturday night into early Sunday morning. Extra precaution is advised for area lakes as they may get quite rough. Additionally, there is a 20% chance for gusts over 40 mph in normally-prone east-west oriented canyons, (think Hellgate and Badrock Canyons), as well as along the west side of mountain ranges. Primary impacts include difficult driving for high-profile vehicles, hazardous small craft conditions, and isolated tree branch damage.