Earthquake!

Linda and Sequoya give an overview of the new Post ShakeAlert Message Summaries and answer an FAQ regarding tsuami info. Then James and Sequoya tell some jokes because June is just around the corner, so you know what that means… Yes, we're bringing dad jokes back to QuakeFeed in honor of Father's Day! Lastly, we discuss whether or not Linda is an AI or a human being, and the emails that inspired our upcoming YouTube series. Stay tuned for that! Please scroll down and explore the safety resources below. 👇 This podcast is ad-supported because our dream is to remove ads from the QuakeFeed app by the end of 2026. Ads in podcasts are more relevant and less intrusive. If you support the work we're doing and would like to help us keep going, the best way is to subscribe to QuakeFeed Premium. Other things you can do are to rate / review QuakeFeed in the App Store and the Podcast app, and share this with your friends so that we can grow our audience. Thank you 🙏 🫶 ⏱️ Timestamps 00:00 – Intro joke + where have we been?! 01:06 – Review of recent QuakeFeed updates 02:03 – What are Post ShakeAlert Message Summaries? 02:53 – EEW Emergency Alerts in iOS 03:54 – OMG Sequoya glazes Linda?! What is going on here? 04:02 – Back to the Post ShakeAlert Message Summaries 05:13 – Example: Brawley, CA quake on 5/10 06:16 – Some respectful feedback 07:15 – Dad jokes 07:51 – We're bringing dad jokes back for Father's Day! 08:23 – How to send us your best jokes 08:33 – Where's the blue wave?! 09:07 – How tsunami info works in QuakeFeed 09:52 – Our theory about why fewer quakes are being flagged 10:22 – What is alarm fatigue? 11:02 – What kinds of earthquakes cause tsunami? 11:40 – Tsunami safety info 12:04 – What inspired our new YouTube series? 12:45 – Is Linda an AI?! 13:58 – Sequoya is back to roasting Linda 14:36 – Coming soon: QF origin story 14:47 – What's next + closing thoughts 16:04 – Blooper… we're so cute 🥰 📚 Learn More 🔗 How To Enable Emergency Alerts in iOS https://support.apple.com/en-us/102516 🔗 ShakeAlert Educational Resources https://www.shakealert.org/education-and-outreach/educational-resources/ 🔗 Post ShakeAlert Message Summaries https://www.shakealert.org/system-information/post-shakealert-message-summaries/ 🔗 Brawley, CA Post ShakeAlert Message Summary https://earthquake.usgs.gov/earthquakes/eventpage/ci41461608/shake-alert ▶️ How To Use the Earthquake Data Source and Filters (v6.1.0 and higher) https://www.youtube.com/watch?v=a6MWT_HMegM 🌊 Tsunami Safety Information 🔗 USGS: What earthquakes cause tsunami? https://www.usgs.gov/faqs/what-it-about-earthquake-causes-a-tsunami 🔗 Know Your Zone https://quakefeed.substack.com/p/know-your-zone 🔗 1964 Good Friday Earthquake https://quakefeed.substack.com/p/1964-good-friday-earthquake 🔗 2025 Kamchatka Earthquake https://quakefeed.substack.com/p/2025-kamchatka-earthquake 🔗 What Do Those Little Icons Mean? (Substack) https://quakefeed.substack.com/p/quakefeed-v662-what-do-those-little 🎙️ What Do Those Little Icons Mean? (Podcast) https://podcasts.apple.com/us/podcast/quakefeed-6-6-2-what-do-those-little-icons-mean/id1562704664?i=1000741747319 📚 Learn More About Us 🔗 Dear QuakeFeed, Linda... or AI Bot? https://quakefeed.substack.com/p/dear-quakefeed-linda-or-ai-bot 🔗 Why We Put Dad Jokes in QuakeFeed https://quakefeed.substack.com/p/dad-jokes-for-fathers-day 📱 Download QuakeFeed for Real-Time Alerts Stay informed – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Subscribe to QuakeFeed Premium for the full range of features – it's free for 30-days for first-time subscribers. 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

Join Linda and Sequoya as they introduce QuakeFeed v6.5.8, a bug fix update that brings back a fan favorite: Dad Jokes! For a limited time, we've replaced the ads in the earthquake list with holiday-themed humor. Earthquakes are serious – it's true – but your earthquake app doesn't have to feel bah humbug all the time. And you never know when a terrible pun might come to your rescue at a family gathering. Not a dad joke fan? (cough Scrooge! cough) QuakeFeed Premium subscribers can turn them off and enjoy a completely joke-free experience. Download QuakeFeed from the iOS App Store to track earthquakes, wildfires, and volcanoes – now with a side of family humor. ⏱️ Timestamps 00:00 – Welcome 00:23 – What's New in v6.5.8 01:01 – A Coarse Joke 01:15 – A Cute Joke 01:37 – A Gross Joke 01:44 – For the Scrooges 02:07 – Closing + Oops! 📚 Learn More Why We Put Dad Jokes in QuakeFeed (QuakeFeed Substack, June 2025) https://quakefeed.substack.com/p/dad-jokes-for-fathers-day 📱 Download QuakeFeed for Real-Time Alerts Stay informed – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Subscribe to QuakeFeed Premium for the full range of features – it's free for 30-days for first-time subscribers. We support Family Sharing, so you can share your subscription with 5 family members. Learn more: https://support.apple.com/en-us/105062 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

On July 30, 2025, at 11:24 a.m. local time, a magnitude 8.8 earthquake struck off the east coast of Russia's Kamchatka Peninsula, generating a Pacific-wide tsunami. Although this powerful earthquake was tied as the sixth strongest ever recorded by seismometers, the tsunami was weaker than initially feared, and the impact in terms of loss of life was minimal. In this episode, we examine how effective planning and warning systems helped minimize casualties. We also debunk a myth about a "parade of erupting volcanoes" and share essential tsunami safety information – all while doing our best to pronounce some beautifully complicated place names. ⏱️ Timestamps 00:00 – Welcome message 00:15 – 2025 Kamchatka Peninsula earthquake 00:33 – Kuril-Kamchatka Trench 00:40 – Shaking intensity & impact 01:00 – Pacific-wide tsunami 01:22 – Tsunami less destructive than feared 01:56 – Lessons from 1952 earthquake 02:24 – Relocation of Severo-Kurilsk 02:37 – Planning + warnings helped save lives 02:48 – Parade of erupting volcanoes? 03:10 – Krasheninnikov eruption 03:22 – Four ongoing eruptions 03:31 – Multiple eruptions not unusual for Kamchatka 04:00 – Subduction zone earthquakes can trigger eruptions 04:33 – Tsunami safety information 05:06 – Natural warning signs 05:45 – 2004 Indian Ocean tsunami: Tilly Smith story 06:51 – Preparedness + education saves lives 06:59 – Our "why" 07:05 – More tsunami safety tips 07:44 – Closing message 📚 Learn More 🔗 QuakeFeed Substack: 2025 Kamchatka Peninsula Earthquake https://quakefeed.substack.com/p/2025-kamchatka-earthquake 🔗 Cal OES: Tsunami Preparedness https://www.caloes.ca.gov/office-of-the-director/operations/planning-preparedness-prevention/seismic-hazards/tsunami-preparedness/ 🔗 NOAA / NWS: Tsunami Safety https://www.weather.gov/media/owlie/TsunamiSafety-OnePager-02-28-2019.pdf 📱 Download QuakeFeed for Real-Time Alerts Stay informed – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Want to view the 2025 Kamchatka Peninsula Earthquake on an interactive map that shows the MMI Contours and the Erupting Volcanoes? Subscribe to QuakeFeed Premium for the full range of features – it's free for 30-days for first-time subscribers. 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

On July 28, 1976, at 3:42 AM, a magnitude 7.5 earthquake struck the sleeping city of Tangshan, China. The official death toll was 242,469, making it the deadliest earthquake since modern seismic recording began. Why was this earthquake so deadly? Learn about six factors that came together to create a worst case scenario. ⏱️ Timestamps INTRODUCTION 00:00 – Welcome 00:18 – Topic Introduction 1976 EARTHQUAKE FACTS 00:35 –Tangshan in 1976 00:58 –Date, time, magnitude 01:21 – Deaths and Damage WHY WAS THIS EARTHQUAKE SO DEADLY? 01:49 – Early morning; people were sleeping 02:20 – What is a survivable void? 02:56 – Shallow earthquake in urban area 03:18 – MMI X and XI shaking intensity 03:47 – Seismic hazard underestimated 04:07 – Unreinforced masonry buildings 04:35 – Sedimentary soils 05:07 – Liquefaction 05:23 – Damage hampered rescue operations 05:54 – Medical infrastructure destroyed 06:06 – Political turmoil 06:22 – International assistance declined TURNING POINT IN SEISMIC SAFETY 06:55 – National seismic code in 1978 07:11 – Tangshan's reconstruction 07:27 – Tangshan today CLOSING 07:39 – Tangshan earthquake memorial 08:37 – Closing Message 📚 Learn More 🔗 QuakeFeed Substack: 1976 Tangshan Earthquake https://quakefeed.substack.com/p/1976-tangshan-earthquake 🔗 Wikipedia: 1976 Tangshan Earthquake https://en.wikipedia.org/wiki/1976_Tangshan_earthquake ▶️ Original B/W Footage of the Aftermath of the 1976 Tangshan Earthquake https://www.youtube.com/watch?v=PGom7kU7b7A 📱 Download QuakeFeed for Real-Time Alerts Stay informed – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Want to view the 1976 Tangshan Earthquake on an interactive map that shows the epicenter and shaking intensity? Subscribe to QuakeFeed Premium for the full range of features – including Historical Earthquakes. It's free for 30-days for first-time subscribers. 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

On July 4, 2019, a magnitude 6.4 earthquake struck near Ridgecrest, a town in California's Mojave Desert. Thirty-four hours later, a magnitude 7.1 earthquake hit the same area – the largest to strike California in 20 years. Shaking was felt across California, Arizona, and Nevada. The earthquakes killed one person, injured 25, and caused surface ruptures stretching 30 miles with ground displacement exceeding six feet. Total damage exceeded $5.3 billion. Learn about the impact of the Ridgecrest earthquakes and how they became a case study for understanding earthquake cascades and stress transfer between intersecting fault systems. We'll also share an important message about safety and preparedness. ⏱️ Timestamps INTRODUCTION 00:00 – Welcome Message 00:12 – Topic Introduction 2019 EARTHQUAKE FACTS 00:30 – About Ridgecrest 01:01 – The Earthquake Sequence 01:41 – One Death and 25 Injuries 02:03 – Damage and Economic Impact 02:35 – Surface Rupture SCIENTIFIC LESSONS 03:05 – Two Perpendicular Fault Systems 03:24 – L-Shaped Rupture Pattern 03:51 – Aftershocks 04:10 – Rethinking Seismic Hazards OUR EXPERIENCE 04:31 – Did We Feel It? 05:34 – QuakeFeed Emails 06:01 – Reaffirming our "Why" 06:24 – Preparedness Call to Action CLOSING 06:45 – Closing Message 07:10 – Drop, Cover, Hold On Instructions 📚 Learn More 🔗 QuakeFeed Substack: 2019 Ridgecrest Earthquake Sequence https://quakefeed.substack.com/p/2019-ridgecrest-earthquake-sequence 🎙️ QuakeFeed Podcast: Drop, Cover, and Hold On https://podcasts.apple.com/us/podcast/drop-cover-hold-on/id1562704664?i=1000520234015 🔗 CALFIRE: Fireworks Safety https://readyforwildfire.org/prevent-wildfire/fireworks-safety/ 📱 Download QuakeFeed for Real-Time Alerts Stay informed – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Want to view the 2019 Ridgecrest Earthquake Sequence on an interactive map that shows the epicenter, shaking intensity, and faults? Subscribe to QuakeFeed Premium for the full range of features – including Historical Earthquakes. It's free for 30-days for first-time subscribers. 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

A quick update from QuakeFeed HQ! Here's what we've been working on: "On This Day in Earthquake History" — now available as Substack posts and podcast episodes. QuakeFeed v6.5.5 is out now! This update includes links to our "On This Day" Substack and podcast content. Preparing for Apple's "Liquid Glass" — a major iOS redesign is coming in September 2025. Learn more here. Plus: A a few quick safety reminders to help you stay prepared. ⏱️ Timestamps INTRODUCTION 00:00 – Welcome 00:10 – What's in this episode NEW CONTENT FROM QUAKEFEED 00:25 – Relaunch of QuakeFeed Podcast 01:02 – QuakeFeed Substack 01:15 – On This Day in Earthquake History 01:35 – Earthquake Safety Tip QUAKEFEED APP UPDATE 02:10 – QuakeFeed v6.5.5 Update 02:45 – Major iOS Redesign: Liquid Glass 03:20 – Preparation for Liquid Glass 03:50 – How to Send a Support Request WILDFIRE SAFETY INFO 04:00 – Wildfire Data Sources 04:45 – Who updates the wildfire databases? 04:55 – New, Fast-Moving Fires: Possible Time Delay 05:32 – Know How to Stay Informed in Emergencies 05:55 – Sign-up for Local Emergency Alert System CLOSING 06:20 – Closing Message 📚 Learn More ▶️ Apple: Introducing Liquid Glass https://www.youtube.com/watch?v=jGztGfRujSE 📱 Download QuakeFeed for Real-Time Alerts Stay informed and safe – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Subscribe to QuakeFeed Premium for the full range of features – including Historical Earthquakes. It's free for 30-days for first-time subscribers. 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

Hosts Linda and Sequoya explore the catastrophic 1980 eruption of Mount St. Helens through the contrasting stories of two men: 83-year-old lodge owner Harry R. Truman, who stubbornly refused evacuation despite repeated warnings, and 30-year-old volcanologist David A. Johnston, whose final radio transmission—"Vancouver! Vancouver! This is it!"—immortalized his ultimate sacrifice for public safety. Through vivid storytelling, the podcast chronicles the dramatic sequence of events from the first warning signs to the fateful morning of May 18, 1980, when a magnitude 5.1 earthquake triggered history's largest recorded landslide and an unexpected lateral blast. Truman, paradoxically both dismissive of the danger and accepting of his fate, chose to remain with the mountain that had shaped his identity. Johnston, though positioned at what was considered a safe observation distance, tragically found himself directly in the eruption's path. Beyond these personal stories, the episode captures remarkable survivor accounts, details the eruption's devastating economic consequences, and explores how this disaster fundamentally changed our scientific understanding of volcanic hazards and revolutionized monitoring approaches worldwide. ⏱️ Timestamps INTRODUCTION: 00:00 – Welcome 01:50 – Why we made this episode HISTORICAL CONTEXT: 02:50 – "Mount Fuji of the Pacific Northwest" 04:00 – Mount St. Helens Wakes Up THE TWO MEN 06:40 – Meet Harry R. Truman 08:30 –Truman Refuses to Evacuate 11:20 – Meet David A. Johnston 12:15 – Johnston's Bravery 13:00 – Red Zone Established MAY 18, 1980 ERUPTION SEQUENCE 13:45 – Earthquake, Landslide, Lateral Blast 15:35 – Johnston's Last Radio Transmission 16:00 – Truman's Fate 16:35 – Gerry Martin's Radio Transmission 17:20 – Photos of Landslide and Lateral Blast 19:00 – Plinian Eruption 19:50 – Lahars AFTERMATH & IMPACT 21:05 – Economic Impact 21:30 – Advances in Scientific Understanding 22:10 – Public Safety Lessons CLOSING 23:20 – Closing Thoughts 24:25 – What's Next 📚 Learn More ▶️ Mount St. Helens – Full Playlist on YouTube https://www.youtube.com/playlist?list=PLO683wv5Jx1EmLc_-N7vTUyw8mtNJNgJP ▶️ Gary Rosenquist Sequence – AI Animated https://www.youtube.com/watch?v=UNlP9TGZOMI ▶️ Remembering David Johnston https://www.youtube.com/watch?v=Sg2rufseJ_w 🔗 From Quiet Mountain to Cataclysm https://quakefeed.substack.com/p/from-quiet-mountain-to-cataclysm 📱 Download QuakeFeed for Real-Time Alerts Stay informed and safe – get the QuakeFeed app now: https://apps.apple.com/app/quakefeed-earthquake-alerts/id403037266 Subscribe to QuakeFeed Premium for the full range of features – including the Erupting Volcanoes map layer. It's free for 30-days for first-time subscribers. 🌍 Connect with Us Substack: https://quakefeed.substack.com YouTube: https://youtube.com/@QuakeFeed Instagram: https://instagram.com/QuakeFeed Twitter/X: https://twitter.com/QuakeFeed 🙌 Support the Show If you found this episode helpful, please rate, review, and share it. Your support helps others stay informed and prepared. 🎵 Music By Soularflair Bio on FMA: https://freemusicarchive.org/music/Soularflair/bio CC-BY License: https://creativecommons.org/licenses/by/4.0/

*NOT A FULL EPISODE* Just a quick announcement about QuakeFeed v5.1.0, available now in the App Store. This update adds three new features: USA Wildfires, Map Legend, and Aftershock Forecasts. The USA Wildfires data layer requires a QuakeFeed Premium subscription. While viewing the map, tap on a wildfire symbol to view detailed information, such as: acres burned, percent contained, how many buildings were destroyed, how many firefighters are fighting it, etc. The Map Legend and Aftershock Forecasts features are included in the free / ad-supported version. You will find the Map Legend button in the top right corner of the map. The USGS Aftershock Forecasts are linked in Quake Details. NOTE: The USGS only publishes aftershock forecasts for larger earthquakes. These quakes will include the words "Aftershock Forecast" in the Quake List, to let you know that it is available. Next month, we will add more more wildfire features to QuakeFeed Premium, such as wildfire alerts and a wildfire list view. We hope to get back to full podcast episodes soon. We have been coping with a family medical emergency for the past several months. Thank you for your patience and understanding. We hope you enjoy QuakeFeed v5.1.0. If you have any questions, concerns, or feedback, please tap the ? in the top right corner of QuakeFeed then tap Ask to send us a support email.

Linda and Sequoya travel through time to April 14, 1906 and visit San Francisco. They ride a cable car down Market Street and see a bustling, prosperous city. Next, they travel forward four days and witness the 1906 San Francisco Earthquake. The devastating M7.9 quake and the fire that followed took 3,000 lives and destroyed 80% of the city. It also marked the dawn of modern scientific earthquake research in the United States. If you're curious to learn more, explore the links below. A trip down Market Street before the fire https://www.loc.gov/item/00694408/ A Trip Down Market Street, 1906 - 4k, Colorized, 60fps https://www.youtube.com/watch?v=1Ok_lwYyHWo Rediscovered film takes a trip through San Francisco in ruins https://www.youtube.com/watch?v=Fm1XSX8Un5Q San Francisco earthquake and fire, April 18, 1906 https://www.loc.gov/item/00694425/ The Great 1906 San Francisco Earthquake https://earthquake.usgs.gov/earthquakes/events/1906calif/18april/ Devastation of 1906 San Francisco Earthquake https://www.usgs.gov/media/images/devastation-1906-san-francisco-earthquake 1906 San Francisco earthquake https://en.wikipedia.org/wiki/1906_San_Francisco_earthquake Elastic rebound with Single Block Model https://www.youtube.com/watch?v=JYQLIpo4kwk Elastic Rebound Talk https://www.youtube.com/watch?v=iB6jl37LbqA Earthquake Intensity—What controls the shaking you feel? https://www.youtube.com/watch?v=BP7gKXLjqxk Mercalli Intensity Scale Explained https://www.youtube.com/watch?v=OHSJcYDaKlc New Map Reveals Ships Buried Below San Francisco https://www.nationalgeographic.com/history/article/map-ships-buried-san-francisco Thank you for listening, we hope you enjoyed our podcast! Be one of the first 20 people to send us feedback and we'll send you an offer code for one year of QuakeFeed Premium! Here's how: In QuakeFeed, tap the ? in the top right corner and then tap Ask to send us a message. Tell us your thoughts - what you did or didn't like, or any other feedback you have.