The Eventual Atlantic Mega-Tsunami

Scientists have long predicted an eventual "mega-tsunami" that will sweep across the Atlantic and be 60 to 150-feet high when it hits the U.S. Eastern seaboard.

1 minute read

December 30, 2004, 5:00 AM PST

By Chris Steins @planetizen


"The western flank of Cumbre Vieja volcano on the island of La Palmain the Canaries is going to slide into the Atlantic one of these days: adiagonal fracture has already separated it from the main body of thevolcano, and only friction still keeps it attached. 'When it goes, it willlikely collapse in about 90 seconds,' said Professor Bill McGuire, directorof the Benfield Grieg Hazard Research Centre at University College London. And when it goes, probably during an eruption, the splash will create amega-tsunami that races across the Atlantic and drowns the facingcoastlines."

[Editor's note: Gwynne Dyer is a London-based independent journalist whose articles are published in 45 countries.]

Thanks to Slashdot

Wednesday, August 11, 2004 in Gwynne Dyer

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 9, 2025 - Diana Ionescu

Map of Haussmann's redesign of Paris in the 1850s through 1870s under Napoleon III.

In Urban Planning, AI Prompting Could be the New Design Thinking

Creativity has long been key to great urban design. What if we see AI as our new creative partner?

June 30, 2025 - Tom Sanchez

Aerial view of suburban housing near Las Vegas, Nevada.

Researchers Use AI to Get Clearer Picture of US Housing

Analysts are using artificial intelligence to supercharge their research by allowing them to comb through data faster. Though these AI tools can be error prone, they save time and housing researchers are optimistic about the future.

45 minutes ago - Shelterforce Magazine

Green bike share bikes parked in a row on a commercial street with outdoor dining and greenery.

Making Shared Micromobility More Inclusive

Cities and shared mobility system operators can do more to include people with disabilities in planning and operations, per a new report.

1 hour ago - Cities Today

View from inside car's driver seat while driving.

Car Designs Make it Harder to See Pedestrians

Blind spots created by thicker pillars built to withstand rollover crashes are creating dangerous conditions for people outside vehicles.

2 hours ago - Bloomberg CityLab

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.

Home and Land Services Coordinator

Appalachian Highlands Housing Partners

Associate/Senior Planner

Gallatin County Department of Planning & Community Development

Senior Planner

Heyer Gruel & Associates PA