• After witnessing the continued decrease of involvement in the SpotterNetwork staff in serving SN members with troubleshooting issues recently, I have unilaterally decided to terminate the relationship between SpotterNetwork's support and Stormtrack. I have witnessed multiple users unable to receive support weeks after initiating help threads on the forum. I find this lack of response from SpotterNetwork officials disappointing and a failure to hold up their end of the agreement that was made years ago, before I took over management of this site. In my opinion, having Stormtrack users sit and wait for so long to receive help on SpotterNetwork issues on the Stormtrack forums reflects poorly not only on SpotterNetwork, but on Stormtrack and (by association) me as well. Since the issue has not been satisfactorily addressed, I no longer wish for the Stormtrack forum to be associated with SpotterNetwork.

    I apologize to those who continue to have issues with the service and continue to see their issues left unaddressed. Please understand that the connection between ST and SN was put in place long before I had any say over it. But now that I am the "captain of this ship," it is within my right (nay, duty) to make adjustments as I see necessary. Ending this relationship is such an adjustment.

    For those who continue to need help, I recommend navigating a web browswer to SpotterNetwork's About page, and seeking the individuals listed on that page for all further inquiries about SpotterNetwork.

    From this moment forward, the SpotterNetwork sub-forum has been hidden/deleted and there will be no assurance that any SpotterNetwork issues brought up in any of Stormtrack's other sub-forums will be addressed. Do not rely on Stormtrack for help with SpotterNetwork issues.

    Sincerely, Jeff D.

Mexico City M7.1 earthquake

Dan Robinson

Dan Robinson

EF5
Joined
Jan 14, 2011
Messages
3,413
Location
St. Louis
Significant earthquake near Mexico City. USGS site has an hypocentral depth of 51km, but the strong ground motion in the city suggests the rupture propagated close to/toward the surface. Some notable videos:

Collapsing buildings:
https://twitter.com/amecora1/status/910253324104011777
https://twitter.com/robottkid/status/910234795631882241

Swaying buildings:
https://twitter.com/Holbornlolz/status/910223143243001863
https://twitter.com/BreakingNNow/status/910220884824207360

Canal seiche:
https://twitter.com/BreakingNLive/status/910219436606574592

Building interior:
https://twitter.com/JorgeFavaloro/status/910251523254444034

Live stream with sound (use the seek bar to find the quake by watching for rising dust on the left hand side of the frame)
 
The video coming out of Mexico City and the photos are absolutely heartbreaking. I visited last summer and had a great time. Great city and great people. I stood in the Paseo de la Reforma in your video up there, Dan.

The Mexico equivalent of the Red Cross is at https://www.cruzrojamexicana.org.mx/ although to give money you will have to speak spanish or use translate.google.com.
 
I was impressed by the earthquake warning system they have in place. It seems to work very well and likely saved a lot of lives in this case. It is similar to the one in place in Japan. If the network of stations detect shaking, they immediately calculate the time of s-wave arrival and sound the alarm. The sirens going off can be heard in some of the videos 15 seconds before the strong shaking starts. It doesn't sound like much time, but it is enough for someone to quickly move to a safe place (under a desk/stairwell, outside in the open etc).
 
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The earthquake warning systems absolutely saved lots of lives, and gave us some video as a side effect. I read somewhere yesterday that they've been working on that in California. A lifesaver there if true.
 
Our cleaning lady still has family there, on the NW side of the city. I’ll have to ask her if her mom is okay tomorrow and what kind of damage she sustained to her home if any.

EDIT: After talking to my cleaning lady (Silvia) just now I learned that her nephew and his girlfriend were trapped in a collapsed building. They were able to pull him out yesterday around 3 pm, but his girlfriend didn’t survive. I know this isn’t scientific information per Dan’s first post. It’s more along the lines of the human side of these natural tragedies and how it can hit close to home even though it’s a long way from here. It appears her mom is okay but essential services are out of commission due to the circumstances.
 
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