[freebeard]

I don't know how we jumped to quakewatch.Did they predict the quakes? Do they receive data from the world seismological network? Are they instrumenting the volcanoes and faults? And the climate tie in?

You quoted the graphic that shows 16 out of 19 predicted successfully.

https://en.wikipedia.org/wiki/Earthquake_warning_system

An earthquake warning system or earthquake early warning system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for notifying adjoining regions of a substantial earthquake while it is in progress. This is not the same as earthquake prediction, which is currently incapable of producing decisive event warnings.
Contents

1 Time lag and wave projection
2 Transit safety
3 Deployment
4 See also
5 References
6 External links

https://www.nature.com/articles/s41598-019-56599-1#Sec5

Abstract

The study of the preparation phase of large earthquakes is essential to understand the physical processes involved, and potentially useful also to develop a future reliable short-term warning system. Here we analyse electron density and magnetic field data measured by Swarm three-satellite constellation for 4.7 years, to look for possible in-situ ionospheric precursors of large earthquakes to study the interactions between the lithosphere and the above atmosphere and ionosphere, in what is called the Lithosphere-Atmosphere-Ionosphere Coupling (LAIC). We define these anomalies statistically in the whole space-time interval of interest and use a Worldwide Statistical Correlation (WSC) analysis through a superposed epoch approach to study the possible relation with the earthquakes. We find some clear concentrations of electron density and magnetic anomalies from more than two months to some days before the earthquake occurrences. Such anomaly clustering is, in general, statistically significant with respect to homogeneous random simulations, supporting a LAIC during the preparation phase of earthquakes.

https://www.scidev.net/global/earth-...rthquakes.html

[BEIJING] China will start building a test satellite later this month (April) to detect electromagnetic anomalies in the atmosphere, as part of the country's proposed earthquake monitoring network, and hopes to launch it in 2014.

The China Seismo-Electromagnetic Satellite (CSES) has been in development since 2003 and is the first spaced-based component of the network. Its data will be correlated with data from ground-based monitoring systems.

The network is eventually intended to provide advance warning of earthquakes, such as the one off the coast of Japan last month (11 March).

Strong seismic activity often causes electromagnetic anomalies in the Earth's atmosphere and magnetic field, aiding the monitoring and prediction of earthquakes, studies suggest.

Shen Xuhui, a senior researcher at the Institute of Earthquake Science, China Earthquake Administration (CEA), and leader of the CSES working group, said the satellite will eventually be connected to a larger observation system. China hopes to launch another two satellites by 2017 and begin predicting earthquakes from 2020.

https://spaceflightnow.com/2018/02/0...er-satellites/

A Chinese Long March 2D rocket successfully delivered seven satellites into a 300-mile-high (500-kilometer) orbit Friday, boosting international missions to measure seismic signals that could help predict future earthquakes, take detailed imagery of planet Earth and test compact camera, propulsion and radio technology.

The main payload carried aboard the two-stage Long March 2D rocket was Zhangheng 1, a Chinese-built satellite designed to sense precursor signals emitted before earthquakes, research that could eventually lead to quake predictions.

Nine scientific instruments aboard the 1,600-pound (730-kilogram) Zhangheng 1 spacecraft will measure Earth’s magnetic field, plasma and other particles to search for disturbances triggered in the early stages of underground seismic events.

Also known as the China Seismo-Electromagnetic Satellite, or CSES, the mission was developed in partnership between Chinese and Italian scientists from the China Earthquake Administration and the Italian Institute for Nuclear Physics.

Then there're all those cell phones with accelerometers.

Originally Posted by DDG

Scientists develop new app that uses your cellphone to ... https://www.latimes.com/local/lanow/...212-story.html
Feb 12, 2016The MyShake earthquake app uses cellphones to detect earthquakes as soon as they start. Scientists hope that by turning mobile phones into vast data collection points, they can quickly glean ...

Your Cell Phone Could Soon Become Part of a Massive ... https://www.smithsonianmag.com/smart...tem-152877868/
Smart News Keeping you current Your Cell Phone Could Soon Become Part of a Massive Earthquake Detection System In the future, your cell phone's accelerometer could help detect earthquakes

'MyShake' App Turns Your Smartphone into Earthquake Detector https://www.livescience.com/53703-ea...p-myshake.html
A network detection algorithm is activated by incoming data from multiple phones in the same area, to "declare" an earthquake, identify its location and estimate its magnitude, Allen said."]Scientists develop new app that uses your cellphone to ... https://www.latimes.com/local/lanow/...212-story.html Feb 12, 2016The MyShake earthquake app uses cellphones to detect earthquakes as soon as they start. Scientists hope that by turning mobile phones into vast data collection points, they can quickly glean ...