The earthquake hit the Fukushima region on 22 November 2016 was M6.9 according to the USGS initial report and caused a minor tsunami of about 2m height. Tsunami warning on mass media this time used some simpler and robust tone of Japanese, along with automated warning announcement in several languages.
Soon after the earthquake, NHK started tsunami warning announcement as usual, but the tone of voice was different from the previous cases. Even the screen shows adamant and straightforward/understandable text along with the tsunami warning area map saying "Tsunami is there" "Run Now!" The expression was easy enough for children of Japanese-beginners to understand.
The automated English announcement was I believe as follows (dictated from the NHK Radio 2):
The Meteorological Agency issued a tsunami warning to the following areas. The coast of Fukushima prefecture. The waves may be as high as 3 meters in some of the areas mentioned. Everyone near the coast must immediately evacuate to higher ground.
These were from NHK TV, NHK TV over one-seg(mobile), NHK Radio2 on Rajirurajiru(cymal radio)