"MAJOR EARTHQUAKE WARNING; 6.0 to 7.0 earthquake likely in S California; Sep 30. Foreshocks Sep 27-28: Please Retweet." was one of principle Tweets heard 'round the world, shaking people hard enough to make them forget that earthquakes are, essentially, unpredictable. Similar Tweets issued from the Quakeprediction account over the next several hours warned of the quake's arrival in 80 hours, then 60 hours. more ›

Seismologists at CalTech have sprung into action to begin work to determine precisely how big this afternoon's earthquake in Baja, California was, and to get information about its depth, epicenter, and faultline. As is always the case with seismic activity, there is a 5 % chance that there is a larger quake to come in the next 24 hours from the same fault line. more ›

Remember that earthquake we had last week? You know, the 5.4 magnitude that struck just before lunchtime and had tall office buildings swaying on their rollers, grocery stores seeing items topple from shelves to the floor, and the media scrapping all other programming for non-stop post-quake coverage. Yeah, that one. Well, if you felt it, the US Geological Survey wants to know about it. more ›