Another Earthquake here in Mexico

Sherkeu said:
USGS has a tool to estimate impact and losses.

Fatalities estimate is 1,000 for this size quake in this area.
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that was my guess, at minimum. I finally got through to one of best friends in the city on FB. She responded to me (in broken English. I speak Spanish, so that kind of worries me more), 'My city is been colspased'. She works in the area known as La Reforma. My friend Theresa says her family is OK, but that she can't locate grandparents in nursing homes. This will take a while to sort out, but it ain't looking good...
 
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tyr_13 said:
How likely is another major earthquake after this one?
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Don't know. This happened during the middle of the day at 1:15 PM, only 10 days after our 8.1-8.5 quake South in Chiapas. Is this related? Too early to tell. My geologist friend in Guatemala is telling me to to leave... but even he, obviously, doesn't know anything for certain.
 
Sometimes the pressure released in a quake can put pressure on subsequent segments of the fault. But that does not always translate into a subsequent quake, and especially not one in a close time frame. Pressure on segments of the San Andreas Fault are transferred to adjacent sections after quakes, but the next quake still might not occur for decades.

It's also not likely these two quakes are on related faults. I'll see what I can find.
 
Mexico's back-to-back earthquakes, explained by a seismologist
Mexico qualifies as highly active. The country sits at the boundary of three pieces of the Earth’s crust that fit together like a jigsaw puzzle — called tectonic plates. Today’s quake originated on a fault within the Cocos plate, which is on Mexico’s western edge. “Whether or not faults rupture depends on the kind of stress that builds up,” Bellini says. The Cocos plate scoots rapidly under the continental crust of the North American plate, which “builds up the stress and strain at a faster rate,” Bellini says. “So you’re liable to have more frequent earthquakes because of that.”...

At this point, a reasonable person might wonder whether the September 8th quake might have triggered today’s. But the epicenters of the two quakes are about 400 miles apart, and it’s unusual for such a strong aftershock to appear this long after a major quake. So it’s unlikely the two are related, Bellini says. “Usually to have something directly related, they happen within minutes of each other, whereas this has been a week and a half,” Bellini says. “But I’m sure somebody will study that to see if there’s any kind of relationship.”
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So not likely related or perhaps minimally related at most.
 
CNN reports that 27 buildings collapsed in Mexico City and more than 150 dead. There must be many more.
 
chrispy said:
Don't know. This happened during the middle of the day at 1:15 PM, only 10 days after our 8.1-8.5 quake South in Chiapas. Is this related? Too early to tell. My geologist friend in Guatemala is telling me to to leave... but even he, obviously, doesn't know anything for certain.
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The most important thing to know is the composition of the land underneath your home. In California, we have liquefaction risk maps. Maybe such a thing exists or you can find a geological map of your area.

Most of Mexico City is built on a dry lakebed. It's a poor foundation that greatly amplifies an earthquake.
 
Death toll is at least 300, local reports are saying. It wasn't a kindergarten, but an elementary school that collapsed. 30 plus students still missing as of 3 am.
 
This Mexico earthquake also triggered a volcano:

As if the earthquake wasn't enough to handle, the shaking appears to have triggered an eruption of Popocatépetl volcano, located southeast of Mexico City. The volcanic eruption caused a church to collapse during mass at the foot of the mountain, killing 15 worshippers.
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It is an active volcano so not totally unexpected.
 
Rescue Teams ready to go.

Known internationally as USA-2, the Los Angeles County Fire Department's Urban Search and Rescue Team will deploy as part of the Disaster Assistance Response Team (DART).

The elite resuce team is comprised of a series of specially-trained firefighters, paramedics rescue specialists, search dogs and handlers, emergency room physicians, structural engineers and others. They'll bring about 55,000 pounds of search-and-rescue tools and medical equipment.

The Israeli military says it's sending a 70-member delegation to Mexico that will primarily provide engineering assistance.
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It is not great timing for rescue availability as some Fire Department teams just got back yesterday from Harvey and then Irma, and there is an anticipated need in Puerto Rico from Maria.
Costa Rica is also ready to send rescue teams.
 
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chrispy said:
Jeez, we just got another big one. 7.1 according to US gov't. This one hit Puebla area. Massive damage being shown on TV right now. Injuries, road collapses. Puebla is only about 1 1-2, 2 hrs south of Mexico City. My area is ok. Nothing like the one a few weeks ago, but Puebla area just got nailed. :(

live coverage. https://cnnespanol.cnn.com/tag/transmision-en-vivo/
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So sorry, I spent three years in Cuautla, just shocking, I have fond memories of Puebla
 
Mexico earthquake: Navy says no missing child in collapsed school

CBS News said:
Hour after excruciating hour, Mexicans were transfixed by dramatic efforts to reach a young girl thought buried in the rubble of a school destroyed by a magnitude 7.1 earthquake. She reportedly wiggled her fingers, told rescuers her name and said there were others trapped near her. Rescue workers called for tubes, pipes and other tools to reach her.

News media, officials and volunteer rescuers all repeated the story of "Frida Sofia" with a sense of urgency that made it a national drama, drawing attention away from other rescue efforts across the quake-stricken city and leaving people in Mexico and abroad glued to their television sets.

But she never existed, Mexican navy officials now say.

"We want to emphasize that we have no knowledge about the report that emerged with the name of a girl," navy Assistant Secretary Angel Enrique Sarmiento said Thursday. "We never had any knowledge about that report, and we do not believe - we are sure - it was not a reality."....
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https://www.cbsnews.com/news/mexico-earthquake-no-girl-missing-in-collapsed-school-official-says
 
William Parcher said:
Mexico earthquake: Navy says no missing child in collapsed school



https://www.cbsnews.com/news/mexico-earthquake-no-girl-missing-in-collapsed-school-official-says
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This was so bizzaro.
On the school run this morning I listened to a reporter get several details from 'rescuers' coming out of the scene (they are known by different colored hard hats). They said the children were under a granite table, there were 3 girls, their ages (5,7,9), that they had been given a phone but could not turn on gps, that they would try to get some chocolate to them, and also an IV (which the news anchors reinterpreted as pedialyte in a tube).

While the info about the IV and GPS was fishy, it seemed clear that there MUST be someone in there.

It was as if the closest rescue people said 'maybe we think we hear some noises' and by the time this got to the end of the bucket line, a very detailed story had emerged.
 
Sherkeu said:
It was as if the closest rescue people said 'maybe we think we hear some noises' and by the time this got to the end of the bucket line, a very detailed story had emerged.
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That would be a "nice" hypothesis for how it happened but there are others. Some wildfires are set ablaze intentionally by arsonists.
 
aaaaaaaaaaand we had yet another one this morning at 7:53 CDMX. This one was 6.4 and located in Ixtepec, Oaxaca, which is extremely close to me. Woke me up out of my Saturday sleep in. Reports still coming in, but it appears some already damaged buildings collapsed in Chiapas. No word on anything else beyond that as of yet. Jeez. :boggled:

ETA. The city of Juchitan which was nailed here in Oaxaca by the first big quake 2 weeks ago was hit again by this one. That city had 50 plus killed in the first one. Not good for them at all, especially as they have been largely forgotten by the press in the wake of the Mexico City quake.

https://earthquake-report.com/2017/09/23/very-strong-earthquake-oaxaca-mexico-september-23-2017/
 
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