Seismic activity at sporting events is nothing new to Seattle fans. 

Many of us remember Marshawn Lynch’s 2011 BEAST-QUAKE. Seahawks fans revel in Lumen Field’s reputation for noise when opposing teams are on offense… 

Even T-Mobile Park has experienced its fair share of shaking. Earlier this year when the Mariners made it to the playoffs, the Pacific Northwest Seismic Network was on site to measure the bone rattling when the M’s hit home runs.

And this past weekend, they were at the 49ers game with a live stream where fans could keep tabs on how much shaking was going on...

GUEST: Harold Tobin - Director of the Pacific Northwest Seismic Network and WA State Seismologist

RELATED LINKS: 
PNSN 2026 Seahawks vs 49ers
PNSN - Seahawks on Instagram
Seahawks fans’ roar over 49ers rivaled ‘Beast Quake,’ scientists say

Thank you to the supporters of KUOW, you help make this show possible! If you want to help out, go to kuow.org/donate/soundsidenotes

Soundside is a production of KUOW in Seattle, a proud member of the NPR Network.

Seismic activity at sporting events is nothing new to Seattle fans.&nbsp;
Many of us remember Marshawn Lynch&rsquo;s 2011 BEAST-QUAKE. Seahawks fans revel in Lumen Field&rsquo;s reputation for noise when opposing teams are on offense&hellip;&nbsp;
Even T-Mobile Park has experienced its fair share of shaking. Earlier this year when the Mariners made it to the playoffs, the Pacific Northwest Seismic Network was on site to measure the bone rattling when the M&rsquo;s hit home runs.
And this past weekend, they were at the 49ers game with a live stream where fans could keep tabs on how much shaking was going on...
GUEST: Harold Tobin - Director of the Pacific Northwest Seismic Network and WA State Seismologist
RELATED LINKS:&nbsp;
<ul>
<li><a href="https://pnsn.org/experiment/2026-seahawks/seahawks-49ers">PNSN 2026 Seahawks vs 49ers</a></li>
<li><a href="https://www.instagram.com/p/DTmJXBbEZ7z/?img_index=1&amp;igsh=aGpkNmplZHp0d3Bm">PNSN - Seahawks on Instagram</a></li>
<li><a href="https://www.seattletimes.com/sports/seahawks/seahawks-fans-roar-over-49ers-rivaled-beast-quake-scientists-say/">Seahawks fans&rsquo; roar over 49ers rivaled &lsquo;Beast Quake,&rsquo; scientists say</a></li>
</ul>
Thank you to the supporters of KUOW, you help make this show possible! If you want to help out, go to <a href="http://kuow.org/donate/soundsidenotes">kuow.org/donate/soundsidenotes</a>
Soundside&nbsp;is a production of KUOW in Seattle, a proud member of the NPR Network.

Soundside

12s shook Lumen Field and rivaled 2011's Beast Quake as the Seahawks hosted the 49ers on Saturday.