What is your highest number of deaths at once?

Eight Sims died right outside the gym, just inches away from the front door. It happened right after Seasons was released and was the first time I'd played during the winter so the catastrophic event caught me off guard. Grimmy was beside himself as he reaped soul after soul while a horde of grieving Sims wept. My Sim had been directed to work out, so he walked past the crowd and went inside to complete his task and only as he left did he pause to grieve over the urns scattered around the entrance. The fact he didn't know any of the deceased didn't stop him from grieving for two days, though. I found that to be incredibly odd. But at that point I knew there must be a bug of some kind at work because I had many Sims die from exposure while jogging in the winter. Before I found a mod to fix the problem, I must have had at least twenty Sims die during blizzards because they just had to go jogging no matter what the weather was like. :/