There were about a hundred earthquakes of at least 2.4 yesterday, mostly centered from Southern California to El Salvador, with the 7.4 off the coast the most severe. Chile, Andaman Islands (India) and Indonesia each had a couple of 5.0+ tremors. At one time, the Richter Scale was used. The current standard of measurement is called moment momentum (I will use MM, or nothing)
You can feel a 2.0, and will begin to panic at 5.5. Report your experience to "Earthquake-Report." You need to scroll to the bottom.
posting of 14April2010 for everything you wish to calculate about earthquakes. Compared to a 5.5, the largest earthquake ever, Chile in 1960, was a 9.5. Subtracting 5.5 from 9.5 gives a difference of 4. A 4 difference means that (you need to know what to do with the 4 to get you to one million) the Chile earthquake was about a million times more powerful than that 5.5, which merely scares you a bit. Or another way of looking at this is that a million 5.5 earthquakes would release as much energy as one 9.5 can, with the graph above showing that that the 1960 Chilean itself produced a quarter of all the earthquake energy during the past century.
TV movie in 2004 entitled 10.5 Apocalypse, with tsunamis, etc. The greater tragedy of the Japan earthquake, however, was Fukushima and the resultant nuclear cataclysm. As all of Japan's and most nuclear powerplants around the world are located next to the ocean (for cooling water), it is possible that the combination of earthquake-tsunami-nuclear has eliminated this option into the future for the Pacific.
...researchers at Oregon State University, and published online by the U.S. Geological Survey, the study concludes that there is a 40 percent chance of a major earthquake in the Coos Bay, Ore., region during the next 50 years. And that earthquake could approach the intensity of the Tohoku quake that devastated Japan in March of 2011.
That flurry of Southern California earthquakes (said to be in the hundreds) between the San Andreas and Imperial Faults? All those newspaper articles comfort the reader by indicating that there is no reason to particularly worry, as these micro-events naturally occur every few years. According to the latest USGS report, though, large earthquakes strike every 150 years on the southern San Andreas Fault. The last one occurred in 1857. Let's see now, if you subtract 1857 from 2012 you get 155 years. Hmm....
Okay, the latest projection is that soon to be hurricane Isaac, now at 70 MPH, is scheduled to make landfall slightly west of New Orleans early Wednesday morning, or exactly on the seventh anniversary of Hurricane Katrina (left). The strongest quarter of any hurricane is the noon to 3 quadrant, so this means the city could be especially affected by higher tides. Katrina made an eastern veer at the end as a Category 3, but only the less dangerous 9 to midnight quarter impacted the levees. Supposedly a sum of $15 billion was spent to shore up the weakness. My personal best guess is that Category 2 Hurricane Isaac will sway even further west, so New Orleans might again just miss the full brunt:
Well, Tembin suddenly weakened into a tropical storm at 65 MPH and moved off the coast of eastern Taiwan, largely sparing the country from truly massive floods. It could have been worse. Tembin will very closely track Bolaven into North Korea.
Typhoon Bolaven resulted in a few blackouts on Okinawa, and will largely miss Cheju Island and South Korea. North Korea will get some rain and wind, but they are in a drought so can use the water.
The U.S. has largely been spared this year, but the eastern Pacific has been overwhelmed by 15 major ocean storms this season.