The US-run Pacific Tsunami Warning Center said amplitudes of up 7.3m were recorded on the coast of Japan. Even out in the deep ocean, the specialist tsunami warning buoys were recording wave amplitudes of a metre, which is considerable.
Japanese defence aircraft on 6727 and 6751 kHz USB at 0830z, very busy and probably related to earthquake.
Additional comms on 5690 USB.
Rick Barton from Arizona informs :
Major earthquake hit Japan with Tsunami reported. Tsunami warning ALL of Pacific region, including Hawaii, wher evacuations underway. (quake measured at 8.9).
Am hearing R. Nikkei normally with piano music. Radio Australia giving extensive coverage on international outlets. while monitoring from 1130-1245 UTC, all 3 NTs are coming in well here in Arizona on 2310, 2325, and 2485, but not with quake coverage heard on 6020, 9560, 9580, and 9590. 6020 and 9560 getting some co-channel QRM. the others are heard very well here atm.