My buddy this in Diamond Bar, his patio collapsed. Partially due to the dry rotted posts. The dog was sleeping under the patio cover when it fell over. Luckily it fell to one side and didn't collapse straight down. Dog's OK
Felt it in Simi ...about 30 seconds of roll, 2-3 seconds of Slam, then another 30 sec of roll. No damage and the Dog slept through it...lol. My mom called form Tehachapi said she felt it too.