Earthquakes in San Diego: What You Need to Know

Earthquakes in San Diego: What You Need to Know

San Diego isn’t usually the first city people think of when it comes to earthquakes — but that doesn’t mean it’s risk-free. In reality, San Diego sits in an active seismic region influenced by multiple nearby fault systems. To understand the basics, see our guide on...
Why Some Earthquakes Are Not Felt

Why Some Earthquakes Are Not Felt

Not every earthquake causes noticeable shaking. In fact, most earthquakes happen without people even realizing it. The reason comes down to how energy travels through the Earth — and how strong that energy is by the time it reaches you. To understand the basics, see...
Why Do Earthquakes Happen at Night?

Why Do Earthquakes Happen at Night?

It often feels like earthquakes happen more at night — but that’s not actually true. Earthquakes don’t follow a schedule. They can happen at any time of day or night because they are driven by underground processes that never stop. To understand the real cause, see...
What Happens Before an Earthquake?

What Happens Before an Earthquake?

Most earthquakes feel sudden — but deep underground, the process begins long before the shaking starts. The Earth doesn’t just “snap” instantly. Stress builds up over time along fault lines until the rock can no longer hold it. To understand the full process, see our...
Why Japan Has So Many Earthquakes

Why Japan Has So Many Earthquakes

Japan is one of the most earthquake-prone countries in the world — and it’s not by accident. The country sits at the meeting point of multiple tectonic plates, making it one of the most geologically active regions on Earth. To understand the basic process, see our...