The Pacific Northwest Seismic Network, which monitors earthquakes and volcanoes in Washington and Oregon, installed a sensor inside T-Mobile Park to record seismic energy during the American League Division Series game.

Throughout the game Friday, seismometers installed at T-Mobile Park recorded how fans reacted to the biggest plays — and Humpy the Salmon's triumphant victory.

The Seattle Mariners will host watch parties at T-Mobile Park for games 3 and 4 of the ALDS against the Detroit Tigers.

The Mariners installed a device at T-Mobile Park to measure seismic activity ahead of ALDS Game 5 in Seattle on Oct. 10, 2025.

The Seattle Mariners have been a cornerstone of the sports scene in Seattle, as evidenced by the full light rail before and after games; Mariners jerseys and their team colors being mainstays in a Washingtonian’s wardrobe; and murals celebrating the city’s home baseball team.

When the Mariners hit the road in the ALDS – head to T-Mobile Park to watch Game 3 on Tuesday, October 7 and Game 4 on Wednesday, October 8 (time tbd) on the biggest and best screen in Seattle.