From all of your indications listed I would definately be concerned. First thoughts of most might be S Bay to Bay Area, but my guess would be somewhere from the Gate North to Tomales first and it would be a doozie....apprx 7.8 or so....probably north of the Bolinas quake. Second guess would be from Tomales Bay to Point Arena and including inland (not many known faults after SA shoots out at Tomales about 40-50 miles (Possibly Santa Rosa). In this case it might be larger than 8.0......third guess would be near Daly city and apprx 7.5------The first two locations might cause a secondary quake north of Point Arena...The area north of the Gate to MTJ is capable of 8.4M or better....Who knows what might happen at Gorda then!!!?
Just my guess....but it would be a lot easier if I lived in the area at the time and "felt" the area. Sometimes I get very minor seizure activity prior to a quake and for the first 10 minutes after the seizure I can almost "see" the location.
After all guessing.....and nothing happened- I would be surprised....
BTW the 4.1 happened at low tide with a -4.3 apprx...I always wonder if it is the push or the pull during April and May....
Bob