Harold Tobin
@haroldtobin.bsky.social
UW prof and director of the Pacific Northwest Seismic Network. WA State Seismologist. All about subduction zones and very messed up rocks.
Reposted by Harold Tobin
SEAHAWKS ARE GOING TO SUPER BOWL LX!!!! Seattle Seahawks beat the LA Rams, 31 - 27!
Hopefully you got to follow along and catch each incredible play of this nail-biting game in real time, but if not then find the whole-game archive at: pnsn.org/data-researc...
Hopefully you got to follow along and catch each incredible play of this nail-biting game in real time, but if not then find the whole-game archive at: pnsn.org/data-researc...
January 26, 2026 at 3:09 AM
SEAHAWKS ARE GOING TO SUPER BOWL LX!!!! Seattle Seahawks beat the LA Rams, 31 - 27!
Hopefully you got to follow along and catch each incredible play of this nail-biting game in real time, but if not then find the whole-game archive at: pnsn.org/data-researc...
Hopefully you got to follow along and catch each incredible play of this nail-biting game in real time, but if not then find the whole-game archive at: pnsn.org/data-researc...
Reposted by Harold Tobin
We're ready for you, 12s! The PNSN's field staff revisited Lumen Field this week to ensure our stations were functioning correctly so we can monitor all of the fan generated energy from today's Seahawks game vs the Rams. Make sure to follow our live seismogram during the game at seahawks.pnsn.org!
January 25, 2026 at 8:12 PM
We're ready for you, 12s! The PNSN's field staff revisited Lumen Field this week to ensure our stations were functioning correctly so we can monitor all of the fan generated energy from today's Seahawks game vs the Rams. Make sure to follow our live seismogram during the game at seahawks.pnsn.org!
Reposted by Harold Tobin
Rashid Shaheed got things started right away with an opening kickoff return touchdown, the 12s rocked the house, and the Seahawks never looked back!
SEAHAWKS WIN 41-6 and move onto the NFC Championship Game!
@seahawks @nfl
SEAHAWKS WIN 41-6 and move onto the NFC Championship Game!
@seahawks @nfl
January 18, 2026 at 5:08 AM
Rashid Shaheed got things started right away with an opening kickoff return touchdown, the 12s rocked the house, and the Seahawks never looked back!
SEAHAWKS WIN 41-6 and move onto the NFC Championship Game!
@seahawks @nfl
SEAHAWKS WIN 41-6 and move onto the NFC Championship Game!
@seahawks @nfl
Follow along with ground motions at Lumen Field as the Pacific NW Seismic Network @pnsn1.bsky.social livestreams our seismometers in and next to Lumen Field! Seahawks up 17-6 late in 2nd qtr. Stream: seahawks.pnsn.org
2026 Seahawks - Seahawks-49ers
seahawks.pnsn.org
January 18, 2026 at 2:31 AM
Follow along with ground motions at Lumen Field as the Pacific NW Seismic Network @pnsn1.bsky.social livestreams our seismometers in and next to Lumen Field! Seahawks up 17-6 late in 2nd qtr. Stream: seahawks.pnsn.org
Reposted by Harold Tobin
TOUCHDOWN SEAHAWKS! Rashid Shaheed returns the opening kickoff for a touchdown! Great start, 12s!
@seahawks @nfl @nflonfox
@seahawks @nfl @nflonfox
January 18, 2026 at 1:54 AM
TOUCHDOWN SEAHAWKS! Rashid Shaheed returns the opening kickoff for a touchdown! Great start, 12s!
@seahawks @nfl @nflonfox
@seahawks @nfl @nflonfox
It looks like northern Japan coastal ports have seen tsunami waves arriving already, but so far just 30-70 cm high. Later-arriving peaks could be higher, but that is good news that the ultimate size will be moderate. I hope so! Damage reports sketchy so far, but also some reason for optimism.
December 8, 2025 at 4:25 PM
It looks like northern Japan coastal ports have seen tsunami waves arriving already, but so far just 30-70 cm high. Later-arriving peaks could be higher, but that is good news that the ultimate size will be moderate. I hope so! Damage reports sketchy so far, but also some reason for optimism.
Reposted by Harold Tobin
Some false reports are circulating that Mt. Rainier is suddenly showing seismic tremor activity — this is not true. The signal being referenced is actually radio interference, most likely due to rime ice buildup on the antenna of one of our seismic stations.
November 19, 2025 at 6:40 PM
Some false reports are circulating that Mt. Rainier is suddenly showing seismic tremor activity — this is not true. The signal being referenced is actually radio interference, most likely due to rime ice buildup on the antenna of one of our seismic stations.
NOAA cut funding for critical parts of the tsunami and earthquake detection system in Alaska, primarily in the Aleutians. I spoke to Wash Post about negative impacts. But, hey, what are the chances of a deadly tsunami being triggered in Alaska? (Gift article, not behind paywall) ⚒️ wapo.st/4qKvavQ
This lab is key for tracking deadly waves. Its sensors are about to go offline.
After NOAA cut funding to the lab that’s been monitoring seismic activity for more than 25 years, nine stations tracking tsunami-causing earthquakes for the agency will go offline by the end of the mo...
wapo.st
November 11, 2025 at 7:37 PM
NOAA cut funding for critical parts of the tsunami and earthquake detection system in Alaska, primarily in the Aleutians. I spoke to Wash Post about negative impacts. But, hey, what are the chances of a deadly tsunami being triggered in Alaska? (Gift article, not behind paywall) ⚒️ wapo.st/4qKvavQ
This visualization of Japan’s M6.8 yesterday is phenomenal. Offshore S-net detected it and issued earthquake alert before any land station detection. Numbered circles show JMA intensity (not same as MMI). Offshore is where we need to be in Cascadia as well.
The underwater seismometer network is so great, as evidenced from yesterday's EQ off-Tohoku.
Reposting unofficial visualization by x.com/kotoho76/sta...
Reposting unofficial visualization by x.com/kotoho76/sta...
November 10, 2025 at 4:10 PM
This visualization of Japan’s M6.8 yesterday is phenomenal. Offshore S-net detected it and issued earthquake alert before any land station detection. Numbered circles show JMA intensity (not same as MMI). Offshore is where we need to be in Cascadia as well.
Today's Japan M6.8 is in an interesting spot: the zone of "missing" slip just north of the very large shallow rupture in the 2011 M9.
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
M6.8 earthquake offshore Japan preceded by upward cascade of foreshocks
What do we know about seismic hazard in the Japan-Kuril subduction zone?
earthquakeinsights.substack.com
November 9, 2025 at 7:36 PM
Today's Japan M6.8 is in an interesting spot: the zone of "missing" slip just north of the very large shallow rupture in the 2011 M9.
Quoted supporting our counterparts and friends at the Alaska Earthquake Center. The cost of the U.S. tsunami warning and mitigation effort is really a pittance. None of it has ever been adequately funded in any administration, and now things are worse. ⚒️ www.nbcnews.com/science/tsun...
U.S. tsunami warning system, reeling from funding and staffing cuts, is dealt another blow
Seismic monitoring stations in Alaska are closing after a denied federal grant, risking delayed tsunami warnings for people living on the West Coast.
www.nbcnews.com
November 9, 2025 at 7:03 PM
Quoted supporting our counterparts and friends at the Alaska Earthquake Center. The cost of the U.S. tsunami warning and mitigation effort is really a pittance. None of it has ever been adequately funded in any administration, and now things are worse. ⚒️ www.nbcnews.com/science/tsun...
Reposted by Harold Tobin
Geno Suarez hits a Grand Slam to put the Mariners up 6-2 and seal Game 5 of the ALCS!
"The City is Shaking!"
#SeizeTheMoment
"The City is Shaking!"
#SeizeTheMoment
October 18, 2025 at 1:25 AM
Geno Suarez hits a Grand Slam to put the Mariners up 6-2 and seal Game 5 of the ALCS!
"The City is Shaking!"
#SeizeTheMoment
"The City is Shaking!"
#SeizeTheMoment
Reposted by Harold Tobin
You feel that Seattle?! Check out that Polanco P-Wave! Polanco Game Winning Single, Crawford Scores, MARINERS WIN!! @Mariners are Toronto Bound! @Tmobilepark @FoxSports
#SeisTheMoment #SeizeTheMoment
#SeisTheMoment #SeizeTheMoment
October 11, 2025 at 5:20 AM
You feel that Seattle?! Check out that Polanco P-Wave! Polanco Game Winning Single, Crawford Scores, MARINERS WIN!! @Mariners are Toronto Bound! @Tmobilepark @FoxSports
#SeisTheMoment #SeizeTheMoment
#SeisTheMoment #SeizeTheMoment
Reposted by Harold Tobin
Dubs is ready to #ShakeOut... Are you?
We’re just ONE WEEK away from the Great ShakeOut earthquake drill on October 16! Join Dubs in practicing Drop, Cover, and Hold On.
Register your participation and explore all the ways you can boost awareness for this event at shakeout.org.
We’re just ONE WEEK away from the Great ShakeOut earthquake drill on October 16! Join Dubs in practicing Drop, Cover, and Hold On.
Register your participation and explore all the ways you can boost awareness for this event at shakeout.org.
October 10, 2025 at 12:00 AM
Dubs is ready to #ShakeOut... Are you?
We’re just ONE WEEK away from the Great ShakeOut earthquake drill on October 16! Join Dubs in practicing Drop, Cover, and Hold On.
Register your participation and explore all the ways you can boost awareness for this event at shakeout.org.
We’re just ONE WEEK away from the Great ShakeOut earthquake drill on October 16! Join Dubs in practicing Drop, Cover, and Hold On.
Register your participation and explore all the ways you can boost awareness for this event at shakeout.org.
Interesting study! And this animation blending the model with the observed SWOT image is gorgeous.
On July 29, 2025 a Mw 8.8 earthquake off Kamchatka launched a Pacific-wide tsunami, right as the SWOT satellite flew south-to-north taking altimetry measurements of the wave train. In our new preprint, we pair SWOT with nearby DART buoys to capture the tsunami’s propagation and its source
October 1, 2025 at 6:31 PM
Interesting study! And this animation blending the model with the observed SWOT image is gorgeous.
Tsunami evacuation systems in Kochi City and Kure town, Shikoku Island. The 1946 Nankai Trough earthquake and tsunami swept ashore here, flooding all these areas - only the most recent of many over the past ~1300 years. The vertical evac towers are really impressive.
September 28, 2025 at 7:13 PM
Tsunami evacuation systems in Kochi City and Kure town, Shikoku Island. The 1946 Nankai Trough earthquake and tsunami swept ashore here, flooding all these areas - only the most recent of many over the past ~1300 years. The vertical evac towers are really impressive.
Yokonami melange, a paleo-megathrust, and so, so much chert, near Kure, Shikoku Island, Japan
September 28, 2025 at 7:01 PM
Yokonami melange, a paleo-megathrust, and so, so much chert, near Kure, Shikoku Island, Japan
We recently spent 2 weeks doing field work in a remote part of Olympic National Park, studying what we think is another part of the 'fossil' subduction plate boundary fault: a paleo-megathrust. The terrain was rugged and challenging, and the rocks were rewarding. Here's a taste. ⚒️
September 12, 2025 at 5:30 AM
We recently spent 2 weeks doing field work in a remote part of Olympic National Park, studying what we think is another part of the 'fossil' subduction plate boundary fault: a paleo-megathrust. The terrain was rugged and challenging, and the rocks were rewarding. Here's a taste. ⚒️
And Steve Malone is still analyzing volcanic earthquakes at PNSN in 2025!
#MSH45 | Aug. 7, 1980 — Eruption #5
On the University of Washington campus, seismologists Steve Malone and Craig Weaver are hosting a documentary crew when harmonic tremors hit Mount St. Helens early afternoon.
Phones, charts, decisions—fast. Hours later, St. Helens delivers.
@pnsn1.bsky.social
On the University of Washington campus, seismologists Steve Malone and Craig Weaver are hosting a documentary crew when harmonic tremors hit Mount St. Helens early afternoon.
Phones, charts, decisions—fast. Hours later, St. Helens delivers.
@pnsn1.bsky.social
August 15, 2025 at 5:01 AM
And Steve Malone is still analyzing volcanic earthquakes at PNSN in 2025!
This eruption is an interesting … coincidence?? Seismically triggered eruptions are not really my specialty, but I answered the phone on Sunday morning when @npr.org’s @gbrumfiel.bsky.social called, so here you go: Russian volcano erupts days after monster quake shakes
www.npr.org/2025/08/03/n...
www.npr.org/2025/08/03/n...
Russian volcano erupts days after monster quake shakes region
The volcano may have been primed to erupt before the magnitude 8.8 quake pushed it over the edge.
www.npr.org
August 4, 2025 at 3:58 AM
This eruption is an interesting … coincidence?? Seismically triggered eruptions are not really my specialty, but I answered the phone on Sunday morning when @npr.org’s @gbrumfiel.bsky.social called, so here you go: Russian volcano erupts days after monster quake shakes
www.npr.org/2025/08/03/n...
www.npr.org/2025/08/03/n...
Here is @noaa.gov's model of the tsunami propagation from the people at PMEL, initiated with the earthquake location and then calibrated by the DART buoy observations. There is a wealth of great information at their website (link in thread). (1/6) ⚒️ www.youtube.com/watch?v=oOtJ...
Kamchatka Tsunami, July 29, 2025 tsunami propagation
YouTube video by NOAAPMEL
www.youtube.com
August 2, 2025 at 5:15 PM
Here is @noaa.gov's model of the tsunami propagation from the people at PMEL, initiated with the earthquake location and then calibrated by the DART buoy observations. There is a wealth of great information at their website (link in thread). (1/6) ⚒️ www.youtube.com/watch?v=oOtJ...
Went on CBS Mornings today to talk about the tsunami and how it all unfolded. They had good questions. www.cbsnews.com/video/why-a-...
Why a recent earthquake didn't wreak havoc, despite its power
After an 8.8 magnitude earthquake off Russia's coast triggered tsunami alerts as far as the U.S., experts like seismologist Harold Tobin explain why the impact was far less devastating than expected.
www.cbsnews.com
August 1, 2025 at 10:13 PM
Went on CBS Mornings today to talk about the tsunami and how it all unfolded. They had good questions. www.cbsnews.com/video/why-a-...
The M8.8 off Kamchatka appears to be the largest earthquake ever recorded that apparently didn't kill anyone. That's really remarkable, if true. ⚒️
July 31, 2025 at 5:16 PM
The M8.8 off Kamchatka appears to be the largest earthquake ever recorded that apparently didn't kill anyone. That's really remarkable, if true. ⚒️