Who: Thor, Sif, Valkyrie, Jane, Doctor Strange
What: Thor asks for Strange's help getting Loki back. After Strange refuses, Thor brews a superstorm over NYC.
When: daytime, after Peter's texts and the news report.
Notes: The storm will last into the night (gametime-wise). Realtime-wise, we're stretching it until Monday or Tuesday, to give everyone time to react if you want to.
( Sorcerer! I would have words with you! )