The issue where Shiny Tornadus could not be encountered in Pokémon GO Raids earlier this week has now been resolved and it is now available, Niantic says it will be compensating affected players in the coming days

January 10, 2024

Niantic is continuing to announce new events and content for Pokémon GO. Read on below to learn more:

Trainers, Shiny Tornadus could not be encountered in Raids earlier this week. This issue has been resolved, and it is now available. We will be compensating affected players in the coming days. We apologize and appreciate your understanding.

— Niantic Support (@NianticHelp) January 11, 2024

Please be aware of your surroundings and follow guidelines from local health authorities when playing Pokémon GO. Upcoming events are subject to change. Be sure to follow Niantic on social media, opt in to receiving push notifications, and subscribe to Niantic’s emails to stay updated.

Source: Official Pokémon GO blog