Soundbust11
Whilst they made considerable effort matching the whisper to any languages and dialects they had encountered so far, their efforts were fruitless, what the whisper said, if it said anything at all, remained obscure.
The search for data on the trembling on the other hand, had at least some form of success.
There were no precedents logged, no similarities with otehr events, nor was there any pattern to it, aside from having occured across the entire territory simultaneously...
However...
Upon searching further, eventually they got word from the Embassy, where this exact same phenomenon seemed to have happened. At the very same time at that...