surfline.com has them all over the world, but you have to pay $9/mo to watch them (I have a sub for surfing info). They have a 24h rewind feature which is pretty cool. People use it sometimes for video of themselves surfing, but I guess it would also be useful for random events like tsunamis.

On that note, I checked feeds at both Ocean Beach and Linda Mar at the predicted time but didn't see anything unusual, except that they apparently made all the surfers get out (first time I've ever seen Linda Mar empty of surfers during daylight hours apart from big storms/flat spells). OB had a bunch of spectators lined up on the dunes... an interesting reaction to a tsunami warning is "let's go to the beach and watch!".