It's down for me in Bay Area with the SOS message and unable to send or receive text messages. Verizon's website didn't say anything but there is a lot of chatter about the outage in the /r/verizon subreddit.

Frustratingly I wasn't able to log into their online support because I couldn't two factor authenticate mysef because I couldn't receive text messages!

I called customer support and they were like, "our system is down and unable to take calls" and it hung up on me.