Weather Forecast for Big Sky

* WHAT...West winds 30 to 50 mph, with gusts of between 65 and 85 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel could be very difficult to dangerous, especially for high profile or light weight vehicles. Blowing dust or snow could significantly reduce visibility at times. * ADDITIONAL DETAILS...Peak wind speeds are likely between 6 AM and 2 PM Thursday.

Those traveling with high profile or light weight vehicles should consider delaying travel or find an alternate route.

* WHAT...West winds 35 to 55 mph, with gusts of between 70 and 90 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel could be very difficult to dangerous, especially for high profile or light weight vehicles. Blowing dust or snow could significantly reduce visibility at times. * ADDITIONAL DETAILS...The most intense are likely to occur through 2 PM Thursday.

Those traveling with high profile or light weight vehicles should consider delaying travel or find an alternate route.

* WHAT...Heavy snow possible. Total snow accumulations between 4 and 8 inches across the valley floors, with 8 to 16 inches possible in the mountains. * WHERE...Big Belt, Bridger and Castle Mountains, Elkhorn and Boulder Mountains, Helena Valley, and Meagher County Valleys. * WHEN...From this evening through Saturday afternoon. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...This will be a mult-day snowfall, with lulls in the snow at times.

Monitor the latest forecasts for updates on this situation. Remember, a Winter Storm Watch means that there is at least a 50% chance of impactful winter weather conditions during the watch period.

* WHAT...Snow expected. Total snow accumulations 1 to 4 inches across most higher elevations, and accumulations 6 to 11 inches over the Pitchstone Plateau. Up to 1 inch near Mammoth. Winds gusting as high as 60 mph. * WHERE...Yellowstone National Park. * WHEN...Until midnight MDT tonight. * IMPACTS...A combination of falling snow and strong winds will make travel difficult, especially in the backcountry.

Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info.

* WHAT...West winds 35 to 45 mph, with gusts between 60 and 75 mph continuing through early this afternoon before winds diminish later this afternoon and evening. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel could be very difficult to dangerous, especially for high profile or light weight vehicles. Blowing dust or snow could significantly reduce visibility at times.

Those traveling with high profile or light weight vehicles should consider delaying travel or find an alternate route.