If I were writing the Great Dystopian Novel, I'd have the Cascadian Megaquake take place on a day with...

If I were writing the Great Dystopian Novel, I'd have the Cascadian Megaquake take place on a day with recording-breaking heat when Canadian fires were sending smog into Lower Cascadia. Or, conceivably, when the city was shut down by snow and ice. We got through the latter scenario...