One of the many cool things about the internet and modern technology in general:
I can be lying in bed in the small hours of the morning and suddenly feel the whole building start shaking for several seconds, and then after breathing a sigh of relief that this wasn't the Next Big One, I can go online to earthquake.usgs.gov and look up their real-time map of California and see the exact earthquake that I felt only moments ago pop up on their map, complete with the precise time and location, but so hot off the presses that they haven't determined the magnitude yet.
A few hours later, the magnitude has been pegged at 4.0 — just enough to make you stop whatever you're doing and go "... is that an earthquake?"
I can be lying in bed in the small hours of the morning and suddenly feel the whole building start shaking for several seconds, and then after breathing a sigh of relief that this wasn't the Next Big One, I can go online to earthquake.usgs.gov and look up their real-time map of California and see the exact earthquake that I felt only moments ago pop up on their map, complete with the precise time and location, but so hot off the presses that they haven't determined the magnitude yet.
A few hours later, the magnitude has been pegged at 4.0 — just enough to make you stop whatever you're doing and go "... is that an earthquake?"