This section of the website contains technical information about the ShakeAlert system.
For general information about ShakeAlert, please visit USGS.gov/ShakeAlert
Resources
Alerting Thresholds
ShakeAlert License to Operate (LtO) Partners
Post-ShakeAlert Message Summaries
ShakeAlert Trademark Guidelines
Alerting Thresholds
Minimum magnitude and intensity thresholds that an earthquake must meet for the system to create a ShakeAlert Message.
ShakeAlert License to Operate (LtO) Partners
Current list of LtO partners, updated whenever a new partner is added.
Post-ShakeAlert Message Summaries
One-page reports that are automatically generated when a ShakeAlert Message is created.
ShakeAlert Trademark Guidelines
Information about correct use of ShakeAlert trademarks and branding.