I've discovered that announcements can come a few hundred turns or so after the event. Just had a giant snatcher (Relentless Assault) bumble into one of my hammerdwarves. By the time the game paused and zoomed in, my hammerdwarf had already smashed in his entire right side (a nifty trick, considering giants are about 3 1/2 times the dwarf's size). RA is turning out to be a disappointment, the most "dangerous" race that's sieged so far in my 5 year fortress is lizardmen, who are squishy. The ambushes and snatchers are larger, elves and even ogres and giants send small squads, but it's just not dangerous... at all.
Waiting on a black diamond I accidentally dumped into the magma to stop smoking so I can get back to magma dumping. Currently, it's pumping out smoke like crazy, which sucks. I had to wall it off so I didn't get the constant miasma-esque blanket of noxious gas. Luckily all my dwarves are ecstatic from the legendary dining room, zoo, and meeting zone.
Even with Dig Deeper's increased food growth times and only one farmer I overproduced food. I've turned off about half my farm plots, and the few remaining are mostly growing rope reed, woad, pig tails, and dimple cups. Now that my clothier is approaching legendary in weaving, dying, and tailoring, he's producing a ton of wealth. Between him, my legendary gem setter (mood), my legendary leatherworker (earned), and my legendary bone crafters (one mood and one earned), I've bought out entire caravans with a single, heavily decorated, ogre loincloth.
Debating whether to do a megaproject or just move on to a more exciting fortress. RA is lackluster lately, not even enough ambushes to make it interesting.
Edit: After waiting a season and a half for the diamond to burn up, I got bored and ordered a dwarf to dump a bucket of water on it from two stories up. Now just have to re-channel the hole and we should be good. Not sure if that will un-carbonite the diamond or not, if it does I'll move my garbage dump over one tile.
Edit 2: Just realized, when I ordered the wall keeping the smoke out deconstructed, one of my mother dwarves and three of her children ran over to do the job. Gotta love family projects. She has five sons total, three children and two babies. I think she and her husband brought one child and have had four more.
Edit 3: Channeling it out released the diamond. Guess I'll re-cast it and move my incinerator over a few places.