Google knows when a crisis is happening.
Search Engine Journal said, "A Google engineer tells The Guardian changes have been made to the search algorithm in response to real-life crises. . . While the said event is taking place, Google will increase the weight of ‘authority’ signals in an effort to surface the most accurate information about the crisis."
Getting to the real information and prioritizing that can reduce the spread of false information and potentially reduce panic.
After the crisis is over, or at least subdued, then the algorithm goes back to normal. Fascinating!