"Sierra and Tahoe Hit by Swift Winter Storm, Prompting Chain Controls and Road Reopenings"

Interstate 80 over Donner Summit has reopened after a closure caused by severe winter weather and multiple vehicle spinouts. Chain controls are now in effect along the route from the Nevada-California state line to Alta in both directions. The closure affected both eastbound and westbound lanes, with westbound lanes reopening earlier in the day and eastbound lanes remaining closed for a period. Authorities had advised staying home due to the deteriorating conditions.