The University of Utah Seismograph Stations reports the earthquake occurred at 6:34 a.m. about 4 miles north-northeast of the Norris Geyser Basin. The university reports it was felt in the Montana border towns of West Yellowstone and Gardiner, both about 20 miles from the epicenter.
Some folks will no doubt fret about the Yellowstone Supervolcano, which will inevitably erupt – someday – and wipe out a good portion of North America, not to mention knocking the earth’s climate into a cocked hat for what may be quite a few years. Being of a somewhat more sanguine nature than some, I tend to adopt a “What, Me Worry?” attitude towards such things – there’s really no point in worrying about things you can’t change, one way or another. And these Yellowstone quakes are nothing unusual; the area of the caldera has been geologically active for a long, long time.
Folks living in southern California, now they may have a little more reason to be concerned. Excerpt:
The Puente Hills thrust fault, which brought Friday night’s magnitude-5.1 quake centered in La Habra and well over 100 aftershocks by Sunday, stretches from northern Orange County under downtown Los Angeles into Hollywood – a heavily populated swath of the Los Angeles area.
A magnitude-7.5 earthquake along that fault could prove more catastrophic than one along the San Andreas, which runs along the outskirts of metropolitan Southern California, seismologists said.
The U.S. Geological Survey estimates that such a quake along the Puente Hills fault could kill 3,000 to 18,000 people and cause up to $250 billion in damage. In contrast, a larger magnitude 8 quake along the San Andreas would cause an estimated 1,800 deaths.
Still – worrying won’t change it. One has to feel for the residents of SoCal, though; if the fiscal condition of their state and the peripatetic lunacy of their state government wasn’t bad enough, then to have to add earthquakes to the list of things that can go south… Well, Colorado by comparison looks mighty good.