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Earthquake Colombia News: Magnitude 6.3 earthquake, strong earthquake of 6.3 magnitude struck the Colombian capital Bogota on Thursday, August 17, 2023, at 10:27 a.m. The earthquake was felt in several cities and towns in Colombia, including Medellin, Cali, and Cartagena, and more updates at news18.com
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Zach Lifton, geologist with the Idaho Geological Survey.
But they're still expecting hundreds of aftershocks of magnitude 3 and above. some of those aftershocks are likely going to be felt outside the local area. >> i learned a new term with this series of quake which was foreshock. that after the 6.4 when we had the 7.1, it turned out the 6.4 was a foreshock to the 7.1. how do you know the 7.1 isn't a foreshock to something else? >> we don't know that. and there is a 1% chance that in the next week, there could be a bigger one there. in that case we'd have to reclassify it as a foreshock. the probabilities are dropping as the time goes by. and the ...
Of the country expect these aftershocks to continue? >> the aftershock sequence is going to continue for months to years. but the rate at which we're -- >> months to years. >> yes, months to years. but it will continue to drop. so in general, the way aftershocks work, you get about half as many aftershocks the second day after the event as the first day. and then the third day you get about a third as many and the fourth day about a fourth as many. so every day they drop. but then the rate at which they drop decreases with time. so you have this long tail where even years out you occasionally ...
It that we're feeling in l.a. kind of roughly? >> the magnitude -- it does not depend on location. it is a 7.1 period. there is no location to that. to describe what we feel we talk about intensity. and it looks like it was intensity 3 to 4 in the los angeles area, depending on exactly where you were. >> from those two again, the aftershock sequence is not a surprise. it is vigorous, but it's in line with what we've seen before. maybe not anticipating it, but that's also within the ballpark. >> in california, southern california would expect to have a magnitude 7 once every 15 or 20 years. the...