Yikes! Will that be affecting San Diego? Does that indicate that one of my friends who's flying in to SD this weekend, yes on Southwest (same friend who got stuck in New England at Christmas), want rethink plans for travel - or will air travel to SD be OK?Apparently Union Station had a 3"/hr rain rate going on for a while. Doubt it was ever made to handle those kinds of sustained rains.
Based on some of the latest forecasts I'm seeing, I would have backup plans for anyone riding trains in California except for the SL and SWC for the next ten days (through to January 20th). Nothing official from Amtrak yet, but there are at least two more atmospheric rivers forecast to hit various parts of CA, including this weekend in SoCal.