Los Angeles Times

Magnitude 3.9 earthquake hits Lake Elsinore, latest temblor to rattle Southern California

A magnitude 3.9 earthquake struck just outside the city limits of Lake Elsinore on Thursday morning, the latest modest temblor to shake Southern California. Weak shaking may have been felt in areas ...
The New York Times

Here’s How Earthquakes Are Measured

What does “moment magnitude” mean, and how do scientists determine the strength of a rupture in the earth? By Henry Fountain Henry Fountain spent a quarter century covering science for The Times. He ...
CBS News

4.7-magnitude earthquake strikes near Malibu and rattles Los Angeles area

A 4.7-magnitude earthquake struck near Malibu on Thursday morning, according to the U.S. Geological Survey. The quake happened at 7:28 a.m., with an epicenter 3.5 miles northwest of Malibu. Shaking ...
Astronomy

Why do brighter astronomical objects have negative magnitudes?

The initial magnitude scale was established by Greek astronomer Hipparchus around 135 B.C.E., categorizing approximately 850 stars into six ranges from 1st (brightest) to 6th (faintest) magnitude.
CNN

Powerful earthquake strikes off the coast of Northern California

• A powerful earthquake with a preliminary magnitude of 7.0 struck off the coast of Northern California Thursday morning, according to the US Geological Survey. A quake this strong is relatively rare, ...
KTLA

Magnitude 4.7 earthquake jolts Los Angeles area

An earthquake with a magnitude of 4.7 jolted the Los Angeles area on Thursday morning, and its impact was felt by millions of people across the region. According to the U.S. Geological Survey, the ...
Los Angeles Times

Magnitude 3.2 earthquake shakes San Francisco Bay Area

This is read by an automated voice. Please report any issues or inconsistencies here. A magnitude 3.2 earthquake was felt in the San Francisco Bay Area on Friday evening. The latest earthquake, which ...