For the second Tuesday in a row around the same time (9:00-9:30 pm EST-ish), the US Retaliation battlegroup has crashed. Blizzard has confirmed that it's performing urgent maintenance on the hardware of the affected realms, and they'll provide an update at 11:00 PM EST/8:00 PM PST. Hmmm. Makes you wonder if whatever caused last week's crash was accidentally rolled back during server maintenance earlier today.
The following are the affected realms:
Area 52, Auchindoun, Azuremyst, Blade's Edge, Blood Furnace, Coilfang, Dawnbringer, Exodar, Fizzcrank, Galakrond, Ghostlands, Grizzly Hills, Shattered Halls, Terokkar, The Scryers, The Underbog, Velen, and Zangarmarsh.