Jim O'Rourke is reported to be safe in Japan!
Also on Facebook today Makoto Kawabata, member and founder of Acid Mothers Temple, posted this:
"thanks everyone. i'm ok. i was in the Shinkansen express train from Tokyo to Nagoya when it was happened. though the train was stopped for 2 hours and 40 minutes, i could arrived at the venue Tokuzo in Nagoya just before the Acid Mothers Guru Guru and SWR's show. i think all of AMT are safe. thanks a lot!!"
This just in (thanks @ENE_RVA via twitter) Melt Banana, Ultra Fuckers, and Hauro of Sufers of Romantica/Lost Frog have all confirmed safety.