I my area we were dealing with severe storms and what sounded like apocalyptic lighting and thunder (not even kidding, the shaking the house and windows kind). There also could have been some weather interruptions. The weather guys were breaking in and we also had power outages.
https://tvline.com/2017/05/19/scandal-ratings-season-6-finale-renewed-final-season/
The CW’s Supernatural did 1.75 mil (its best audience since Feb. 16) and a 0.6, followed by 1.65 mil/0.6, up a tenth in the demo in both cases to a 6-week high. Average reader grade: “B+.”