Heavy snow and multiple spinouts Thursday morning had officials holding all traffic on Interstate 80 at the California and Nevada state line in the Sierra as a Winter Storm Warning went into effect.

This storm is expected to significantly impact travel, infrastructure, and public safety across Big Sky Country..

Heavy, wet snow poses unique challenges and threats in a winter storm: it can cause heart attacks in people shoveling snow, lead to power outages and roof damage, and cause hazardous conditions on the roadways.