On the smaller scale, Life is Strange, specifically the "Sacrifice Arcadia Bay" ending. The bizarre phenomena in Arcadia Bay (snowfall on a warm day, unscheduled eclipse, mass beaching of whales, two moons sighted) would probably attract some attention, particularly from conspiracy theorists. Then you'd get the tornado, which would dominate media coverage for days given the casualties. I think it's a safe bet that President Obama would personally visit the town. Coming on the heels of that would be the revelation of Mark Jefferson as a psychopath, which wouldn't be enough to edge out coverage of the tornado itself, but would get a lot of play on programs that often cover lurid crime stories like Dateline. Tornadoes would rapidly climb the list of natural disasters Americans worry about, particularly outside Tornado Alley. All in all, nothing earthshaking, but lots of potential butterflies (fitting). For example, if Governor Kitzhaber's response is positively viewed, the popularity boost might be enough for him to survive the ethics scandal that led to his resignation in 2015, possibly even leading to him being a presidential candidate in 2016. I doubt he'd win, but maybe his endorsement helps swing the Democratic primary, either strengthening Hillary Clinton's position or maybe tilting things just enough for Sanders to win the nomination.