Just got this alert today:
Few weeks ago, I was a daily visitor to this park early in the morning. Apart from that, I cannot make any connection to my location data and why Google would alert me about possible traffic around the park in the evening on the next day.
I am also not a fan of the singer who is hosting a concert at the venue. And I do not have any related emails in my Gmail account. One can only wonder the relevance of this update aimed at me!