I was just looking for Tim's prediction of a Northern California M6 quake for a given time on Sept 28 2004. He gave a time of day. He made that post the day before. He was 8 hours off. That prediction is missing from the archives, as far as I can find. Links to related posts are below. Petra also had a prediction with a date range of a few days, and the correct location within a few km, but underestimate magnitude (unless you want to call it a M3.8+). That prediction is linked below.
What was interesting to me is that it is the only prediction Tim ever made on earthwaves, and that he said it was bade on being psychic.

You can't do statistics on one prediction, but this one was interesting. It kind of seemed like Petra was on to something also, but hard to tell: she knows a lot about quake occurence, unlike some others who have posted here over the decade (s).

Chris

http://www.earthwaves.org/wwwboard/messages/23057.html

http://www.earthwaves.org/wwwboard/messages/23086.html

Petra
http://www.earthwaves.org/wwwboard/messages/23056.html

It appears that my prediction was too vague to be taken seriously, but as a few people have told me personally, 'hey, I didn't hear of anyone, scientist or otherwise predict a California quake for September 28, 2004 at a M6+'. I may have been vauge about the location, I admit. What I did predict with some accuracy seemed to be close enough for them to understand that my feelings are real and are not be dismissed.

• Petra prediction