https://blog.google/products-and-platforms/platforms/android/earthquake-detection-and-alerts/
Earthquake detection and early alerts, now on your Android phone
Mar 1, 2023 - Two new Android initiatives designed to provide timely earthquake information and alert people before the next earthquake shakes their home.
early alertsandroid phone
https://www.usgs.gov/faqs/how-do-i-sign-shakealertr-earthquake-early-warning-system
How do I sign up for the ShakeAlert® Earthquake Early Warning System? | U.S. Geological Survey
earthquake earlysign
https://xkcd.com/2219/
xkcd: Earthquake Early Warnings
xkcd earthquakeearly warnings
https://www.sms-tsunami-warning.com/
Live Earthquake & Tsunami Alerts | Global Early-Warning System
Real-time global quakes, alerts, and tsunami monitoring
early warning systemlive
https://japannews.yomiuri.co.jp/politics/politics-government/20251210-297743/
PM Leads Disaster Response Operations Until Early Hours Following Earthquake off Aomori Prefecture...
pm leadsdisaster response