#tsunami — Public Fediverse posts

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.15 09:56:33 UTC
Preliminary Magnitude: 4.3(Ml)
Lat/Lon: 69.551 / -144.491
Affected Region: 45 miles SW of Barter I., Alaska
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for ano
https://www.tsunami.gov/events/PAAQ/2026/09/15/tlegq7/1/WEAK53/WEAK53.txt

Japan conducts major tsunami evacuation drill in Hokkaido

Police on Tuesday conducted a vehicle-based evacuation drill in Tomakomai, northern Japan, based on a scenario in which…
#EuropeSays #Japan #JP #Hokkaido #Evacuation #PacificOcean #tsunami
https://www.europesays.com/japan/91743/

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.11 10:49:50 UTC
Preliminary Magnitude: 5.2(Ml)
Lat/Lon: 51.157 / -178.502
Affected Region: 110 miles SE of Amchitka, Alaska
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for ano
https://www.tsunami.gov/events/PAAQ/2026/09/11/tl74mn/1/WEAK53/WEAK53.txt

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.07 01:34:25 UTC
Preliminary Magnitude: 4.6(ML)
Lat/Lon: 43.832 / -128.750
Affected Region: off the coast of Oregon
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for another sect
https://www.tsunami.gov/events/PAAQ/2026/09/07/tkz06l/1/WEAK53/WEAK53.txt

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.04 02:36:56 UTC
Preliminary Magnitude: 5.0(mb)
Lat/Lon: 52.128 / 176.905
Affected Region: 45 miles SE of Buldir I., Alaska
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for anot
https://www.tsunami.gov/events/PAAQ/2026/09/04/tktivy/1/WEAK53/WEAK53.txt

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.03 20:26:43 UTC
Preliminary Magnitude: 5.2(Mwp)
Lat/Lon: 52.300 / -169.300
Affected Region: 45 miles SW of Nikolski, Alaska
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for ano
https://www.tsunami.gov/events/PAAQ/2026/09/03/tkt1vk/1/WEAK53/WEAK53.txt

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.03 13:09:53 UTC
Preliminary Magnitude: 5.2(Mwp)
Lat/Lon: 52.100 / -169.000
Affected Region: 55 miles S of Nikolski, Alaska
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for anot
https://www.tsunami.gov/events/PAAQ/2026/09/03/tkshll/1/WEAK53/WEAK53.txt

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.03 11:22:21 UTC
Preliminary Magnitude: 6.2(Mwp)
Lat/Lon: 52.015 / -169.221
Affected Region: 65 miles SW of Nikolski, Alaska
Note: * An earthquake has occurred; a tsunami is not expected.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued f
https://www.tsunami.gov/events/PAAQ/2026/09/03/tkscoz/1/WEAK53/WEAK53.txt

#tsunami #warning
🌊Category: Information
Bulletin Issue Time: 2026.09.01 06:52:31 UTC
Preliminary Magnitude: 5.1(Mwp)
Lat/Lon: 52.289 / -169.283
Affected Region: 45 miles SW of Nikolski, Alaska
Note: * There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for ano
https://www.tsunami.gov/events/PAAQ/2026/09/01/tkoaq9/1/WEAK53/WEAK53.txt

Collapsing Mountains In Alaska Are Causing Massive Tsunamis 

https://onlinemarketingscoops.com/2026/07/13/collapsing-mountains-in-alaska-are-causing-massive-tsunamis/

@Golemde Kann man jetzt schon irgendwo Wetten abschließen, welches zuvor ausgeschlossene Szenario leider, leider doch eintritt und deswegen leider, leider doch radioaktives "Material" Lebensräume verseucht?

#hochwasser #wetterextreme #tsunami #meeresspiegel #erdbeben #plattentektonik #extremereignisse #extremwetter #halbwertzeit #störfall #planungsfehler #atommüll #endlager @golem-Golemde

@Golemde Kann man jetzt schon irgendwo Wetten abschließen, welches zuvor ausgeschlossene Szenario leider, leider doch eintritt und deswegen leider, leider doch radioaktives "Material" Lebensräume verseucht?

#hochwasser #wetterextreme #tsunami #meeresspiegel #erdbeben #plattentektonik #extremereignisse #extremwetter #halbwertzeit #störfall #planungsfehler #atommüll #endlager @golem-Golemde

@Golemde Kann man jetzt schon irgendwo Wetten abschließen, welches zuvor ausgeschlossene Szenario leider, leider doch eintritt und deswegen leider, leider doch radioaktives "Material" Lebensräume verseucht?

#hochwasser #wetterextreme #tsunami #meeresspiegel #erdbeben #plattentektonik #extremereignisse #extremwetter #halbwertzeit #störfall #planungsfehler #atommüll #endlager @golem-Golemde

@Golemde Kann man jetzt schon irgendwo Wetten abschließen, welches zuvor ausgeschlossene Szenario leider, leider doch eintritt und deswegen leider, leider doch radioaktives "Material" Lebensräume verseucht?

#hochwasser #wetterextreme #tsunami #meeresspiegel #erdbeben #plattentektonik #extremereignisse #extremwetter #halbwertzeit #störfall #planungsfehler #atommüll #endlager @golem-Golemde

@Golemde Kann man jetzt schon irgendwo Wetten abschließen, welches zuvor ausgeschlossene Szenario leider, leider doch eintritt und deswegen leider, leider doch radioaktives "Material" Lebensräume verseucht?

#hochwasser #wetterextreme #tsunami #meeresspiegel #erdbeben #plattentektonik #extremereignisse #extremwetter #halbwertzeit #störfall #planungsfehler #atommüll #endlager @golem-Golemde

USGS CoNED (TopoBathy) WebMap Viewer & (Open) Data Downloader
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https://topotools.cr.usgs.gov/topobathy_viewer/ <-- shared #USGS Viewer webmap & download selector
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https://www.usgs.gov/coastal-changes-and-impacts/coned <-- shared USGS CoNED overview/entry page
--
[I used to shore dive in the Straits Of Juan de Fucca, Washington State side, and Crescent Lake - so I chose that area as a CoNED example to explore; good memories, including of the 18 Wheeler Burger with pie & coffee in Joyce, WA on drizzly days]
#GIS #spatial #mapping #remotesensing #model #modeling #CoastalNationalElevationDatabase #CoNED #elevation #topography #bathymetry #topobathy #opendata #openscience #fedscience #publicgood #usecase #naturalworld #coastal #coast #depth #hydrospatial #hydrography #download #shoreline #inundation #sedimenttransport #sealevelrise #SLR #stormsurge #models #modeling #extremeweather #tsunami #impact #risk #hazard #assessment #climatechange #geomorphology #geomorphometry #Restoration, #redevelopment #protection #cliff #flood #flooding #webmap
@USGS

SimplyInfo.org: 15th Anniversary Report #FukushimaDaiichi

March 2, 2026

Excerpt: "This TV Asahi investigative report from March 2025 [linked below] paints a sobering picture of the enormous challenges still facing the decommissioning of Fukushima Daiichi, fourteen years after the accident. While #TEPCO achieved a milestone the previous November by extracting roughly 0.7 grams of #NuclearFuel debris for the first time, experts interviewed for the piece emphasized that debris removal is just one piece of a far more complex puzzle. Around 1,000 fuel assemblies
still remain in the spent fuel pools of Units 1 and 2, untouched since the accident, and officials from the Nuclear Damage Compensation and Decommissioning Facilitation Corporation (#NDF) described clearing these pools as the single most urgent priority — in part because another
#earthquake or #tsunami could strike at any time.

"Before large-scale debris removal can even begin, the area around the reactor buildings must be cleared of heavily contaminated structures and exhaust stacks to make room for the massive equipment required. Because humans cannot safely approach the highly radioactive debris, all removal work must be done remotely. Radiation levels outside the buildings remain dangerously high — a dosimeter near #Unit2 showed particularly elevated readings — and contaminated water continues to be generated at a rate of roughly 80 tons per day as #rainwater and #groundwater contact radioactive materials on site, despite TEPCO having already released about 80,000 tons of treated [but still radioactive] water into the ocean.

"Perhaps the most troubling concern raised in the article is what happens to the debris and #RadioactiveWaste after it is removed. Hiroshi Miyano, chairman of the Decommissioning Review Committee of the Atomic Energy Society of Japan, was blunt in his criticism, saying no serious thought has been given to managing this waste over the coming century or two.

"The Fukushima debris is uniquely complicated because it is a mixture of melted nuclear fuel and structural materials, and experts warned that removal may not even be possible until a concrete disposal plan is in place. General decommissioning superintendent Toyoshi Fukada warned that without proper storage facilities ready in advance, the entire decommissioning effort could eventually grind to a halt simply because there would be nowhere to put the waste."

Read more:
https://simplyinfo.org/2026/03/simplyinfo-org-15th-anniversary-report-fukushima-daiichi/

Asashi investigative report [pdf]:
https://www.dropbox.com/scl/fi/ysaf6a7hj62286sv4hoql/alps_water_d250130_14-j_translated.pdf?rlkey=3u397ndoafdtiq6fgjczg4a74&st=845tdf30&dl=0

#FukushimaIsntOver #TEPCOLies #RethinkNotRestart #NoNukes #NoNukesForAI #RenewablesNow #WaterIsLife #OceansAreLife #NuclearPlants #NuclearDisaster #Remember311

United States Tsunami Alerting Analysis, 2026 Report
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https://mil.wa.gov/asset/69a08a91462bf/United-States-Tsunami-Alerting-Analysis-2026-updated.pdf <-- shared report PDF
--
#naturalhazard #earthquake #USA #alert #monitoring #tsunami #risk #hazard #humanimpacts #lossoflife #death #infrastructure #damage #cost #economics #coast #coastal #nationwide #hazardassessment #emergencymanagement #GIS #spatial #instrumentation #spatialanalysis #model #modeling #operations #geography geomorphometry demographics #geologichazard #alertsystems #warning #ocean #marine #wave #emergencyresponse #planning #messaging #response
@National Tsunami Hazard Mitigation Program

Searching For Seismic Precursors—The Barry Landslide Hazard
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https://doi.org/10.1785/0220250205 <-- shared paper
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https://www.seismosoc.org/news/study-searches-for-landslide-clues-in-seismic-signals-from-alaskas-barry-arm/ <-- shared technical article
--
#geology #engineeringeology #massmovement #risk #hazard #landslide #earthquake #remotesensing #geophysics #seismic #seismology #precursor #background #model #Alaska #casestudy #coast #coastal #BarryArm #tsunami #infrasound #environmental #monitoring #spatialanalysis #spatiotemporal #glacial
#UniversityOfAlaskaFairbanks | #USGS | #SeismologicalSocietyofAmerica

Satellite Captures The First Detailed Look At A Massive Tsunami
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https://www.earth.com/news/satellite-captures-the-first-detailed-look-at-a-giant-tsunami/ <-- shared technical article
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https://doi.org/10.1785/0320250037 <-- shared paper
--
#GIS #spatial #mapping #satellite #remotesensing #earthobservation #geology #tectonics #Kuril #Kamchatka #Russia #Pacific #tsunami #NASA #SWOT #energy #dissipation #risk #hazard #model #modeling #DART #buoy #observation #instrumentation #waveforms #propogation #geodetic #spatialanalysis #spatiotemporal #marine #wave #megathrust #rupture #mechanics #altimetry #forecasting #hydrodynamic

#NASA and #CNES's #SWOT #satellite captures the first detailed look at a massive #tsunami
Instead of a single neat crest racing across the basin, the image revealed a complicated, braided pattern of energy dispersing and scattering over hundreds of miles.
Results go well beyond a pretty picture. They suggest physics we use to forecast tsunami hazards – especially assumption that largest #ocean-crossing waves travel as largely “non-dispersive” packets – need a revision.
https://www.earth.com/news/satellite-captures-the-first-detailed-look-at-a-giant-tsunami/

Estimated Average Annualized Tsunami Losses for the United States [#FEMA / #USGS / #NOAA]
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https://www.fema.gov/sites/default/files/documents/fema_hazus_p-2426_estimated-average-annualized-tsunami-losses-united-states_092025.pdf <-- shared PDF
--
#NTHMP #tsunami #earthquake #risk #hazard #cost #economics #GIS #spatial #modelling #model #infrastructure #impacts #humanimpacts #publicsafety #loss #coast #coastal #mitigation #outreach #excavation #regulations #remotesensing #collaboration #SMEs #buildings #populations #communities #policy #lossoflife #injuries #destruction #engineeringgeology #remotesensing #spatialanalysis #spatiotemporal #hazarddata #hazus
@USGS @NOAA @FEMA

An upgrade.

A tsunami advisory has been issued for British Columbia's :flagbc: Pacific Ocean coastlines.

EmergencyInfoBC: https://www.emergencyinfobc.gov.bc.ca/event/tsunami-29jul25/
Alertable: https://alertable.ca/#/details/2025/443586
- - -
Une escalation.

Un avis de tsunami a été émis pour la côte Pacifique de la Colombie-Britannique :flagbc:.

Alertable: https://alertable.ca/#/details/2025/443586

#Victoria #Tofino #HaidaGwaii #PortHardy #BC #BritishColumbia #Tsunami

A tsunami watch has been issued for BC, including Victoria, western Vancouver Island, Saanich Peninsula, Northeastern Vancouver Island, BC North Coast and Haida Gwaii.
- - -
Une veille de tsunami a été émise pour la Colombie-Britannique, incluant Victoria, l’ouest de l’île de Vancouver, la péninsule Saanich, le nord-est de l’île de Vancouver, la côte Nord de la Colombie-Britannique et Haida Gwaii.

https://alertable.ca/#/details/2025/443581

#Victoria #Tofino #HaidaGwaii #PortHardy #BC #BritishColumbia #Tsunami

Population Vulnerability Of Residents, Employees, And Cruise-Ship Passengers To Tsunami Hazards Of Islands In Complex Seismic Regions - A Case Study Of The U.S. Virgin Islands
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https://doi.org/10.1016/j.ijdrr.2025.105289 <-- shared paper
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#GIS #spatial #mapping #Tsunami #Evacuation #Mitigation #Risk #Hazard #Modeling #Island #publicsafety #USVI #VirginIslands #damage #loss #infrastructure #cost #economics #humanimpacts #publicsafety #lossoflife #death #earthquake #fault #mitigation #monitoring #warning #response #tourists #locals #employees #cruiseships #population #community #vulnerability #USVirginIslands #ships #vessels #docks #inundation #flood #flooding #waves #maritime #port #scenario #riskassessment #model #modeling #spatialanalysis #spatiotemporal

There was a megatsunami in Lituya Bay in 1958, https://en.m.wikipedia.org/wiki/1958_Lituya_Bay_earthquake_and_megatsunami . An earthquake caused a massive rockfall into a bay. The impact with the water generated a massive wave with a run up of 520m on the opposing slope. It was a shockingly powerful wave!

It turns out this kind of event is a risk in high latitude mountainous coastlines. The glaciers create steep valleys with fjords. The steep slopes have a high rockfall risk. In Norway, they are doing a mapping program to give warning before such disasters https://www.earthmagazine.org/article/comment-assessing-threat-massive-rock-slope-failures-norwegian-fjordlands

#TIL
#megatsunami
#tsunami
#rockfall

A Magnetic Tsunami Warning

Tsunamis are devastating natural disasters that can strike with little to no warning for coastlines. Often the first sign of major tsunami is a drop in the sea level as water flows out to join the incoming wave. But researchers have now shown that magnetic fields can signal a coming wave, too. Because seawater is electrically conductive, its movement affects local magnetic fields, and a tsunami’s signal is large enough to be discernible. One study found that the magnetic field level changes are detectable a full minute before visible changes in the sea level. One minute may not sound like much, but in an evacuation where seconds count, it could make a big difference in saving lives. (Image credit: Jiji Press/AFP/Getty Images; research credit: Z. Lin et al.; via Gizmodo)

#fluidDynamics #geophysics #magneticField #magnetohydrodynamics #physics #science #tsunami

The 60th Anniversary Of The M9.2 Alaska Earthquake And Tsunami Of March 27, 1964
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https://earthquake.usgs.gov/earthquakes/events/alaska1964/ <-- USGS page with details
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https://pubs.usgs.gov/fs/2014/3018/ <-- USGS publication, The 1964 Great Alaska Earthquake and Tsunamis—A Modern Perspective and Enduring Legacies
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#GIS #spatial #mapping #risk #hazard #earthquake #Anchorage #Alaska #record #tsunami #damage #anniversary #lossoflife #publicsafety #fault #faulting #geologichazard #naturaldisaster #disaster #naturalahazard #publichealth #publicsafety #disasterresponse #monitoring #model #modeling #massmovement #grounddeformation #engineering #death #damage #propertydamage #subductionzone #structuralgeology #riskmanagement #engineeringdesign #earthscience #GreatAlaskaEarthquake #earthquakepreparedness

🔥 #ClimateDiary

[E] Although the media report about the earthquake and #tsunami warnings in Japan, they usually forget that corresponding warnings have also been issued for Russia (#Vladivostok, #Nakhodka, #Sakhalin) and South Korea (#Gangwong).

[D] Die Medien berichten zwar von den Erdbeben und #Tsunami Warnungen in Japan, vergessen aber meist dabei, dass auch für Russland (#Wladiwostok, #Nachodka, #Sachalin) und Südkorea (#Gangwong) entsprechende Warnungen verlautbart wurden.