I assume many might see this on the news, but figured I'd post a couple links for easy video finding.
At least two. Based on a description by one person possibly 3 (1 earlier in the day then 2 in quick succession). All in the 10 Mile Canyon between Frisco and Copper Mtn.
Very heavy snowfall the past couple of days in Colo.
Not a huge amount of snow made it across the creek, but enough to bury up to the wheel wheels on cars for the second one. Obviously I70 was shut down for a while (~1-2 hrs I think). There were other I70 closures as well over the course of the day.
I70 even ignoring the avalanches, was a total disaster on Sunday March 3 with traffic hardly even moving up to the tunnel from Silverthorne at 10pm...
https://cbsloc.al/2J036UG
https://denver.cbslocal.com/2019/03/04/colorado-avalanches-snow-closes-highway-drivers-stranded-interstate-70/
https://twitter.com/Marshall9News/status/1102550707276791808?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1102550707276791808&ref_url=https%3A%2F%2Fwww.coloradoan.com%2Fstory%2Fnews%2F2019%2F03%2F04%2Favalanche-roars-over-colorados-70-prompts-warnings%2F3053321002%2F