This link has tracked the details of ski areas' operation and restrictions since the March 2020 in nearly every country with significant ski resorts.
Mt. Baldy was not the only ski area open in April 2020. Sweden had a much softer lockdown than most countries, so Riksgransen remained open continuously in 2020 through the spring to May 24. It reopened for its famous midnight sun skiing only from June 18-21, no doubt due to lack of foreign tourists that are normally attracted to it.
Mt. Baldy was not the only ski area open in April 2020. Sweden had a much softer lockdown than most countries, so Riksgransen remained open continuously in 2020 through the spring to May 24. It reopened for its famous midnight sun skiing only from June 18-21, no doubt due to lack of foreign tourists that are normally attracted to it.