Did you feel that rumble Friday night when Jorge Polanco hit the game-winning single in the 15th inning to advance the Seattle Mariners to the American League Championship Series?

Probably not, if you weren’t among the more than 47,000 fans attending the sold-out T-Mobile Park game who jumped, screamed and clapped in celebration of the Mariners’ historic win over the Detroit Tigers.

But for those lucky attendees, the ground shaking felt briefly like a “little earthquake” — similar to a big truck rumbling by — according to seismologist Mouse Reusch of the Pacific Northwest Seismic Network, which installed a temporary seismometer on the ground floor of the stadium.

The seismometer measures ground vibrations caused by fans in the stands, “from people jumping up and down mostly,” Reusch sai

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