Stay organized with collections
Save and categorize content based on your preferences.
The following sections describe earthquake alerts.
Alert area
If you use a <circle> entity to specify an earthquake's epicenter, add a
non-zero radius instead of a single point:
Zero-radius circles are considered empty objective areas that Google Public
Alerts doesn't support.
Depending on an earthquake's magnitude of depth, your system can select a
radius from a set of predetermined radii values.
Many earthquakes are centered in remote or offshore locations. Therefore, we
recommend that you specify the value of the <areaDesc> element in terms of
the epicenter's distance and direction from a more populated or better known
area.
Example:
<areaDesc>10 km SW of Christchurch</areaDesc>
If you have an intensity shakemap image, epicenter map image, or other rich
media sources, then you can use the <resource> element to specify the type
and content of the resource file.
Additional parameters
To describe the earthquake's strength and intensity in <parameter> objects,
Public Alerts also accepts the element value pairs shown in the following code
snippet.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eWhen defining an earthquake's epicenter using a \u003ccode\u003e<circle>\u003c/code\u003e entity, ensure a non-zero radius is provided to represent the alert area accurately.\u003c/p\u003e\n"],["\u003cp\u003eDescribe the \u003ccode\u003e<areaDesc>\u003c/code\u003e element in terms of distance and direction from a well-known location, especially for remote or offshore earthquakes, to help users understand the affected area.\u003c/p\u003e\n"],["\u003cp\u003eUse the \u003ccode\u003e<resource>\u003c/code\u003e element to include rich media sources, like intensity shakemaps or epicenter maps, for better visualization of the event.\u003c/p\u003e\n"],["\u003cp\u003eUtilize \u003ccode\u003e<parameter>\u003c/code\u003e objects to convey the earthquake's strength and intensity using specific element value pairs, like \u003ccode\u003eMagnitude\u003c/code\u003e and \u003ccode\u003eEventDepth\u003c/code\u003e.\u003c/p\u003e\n"]]],["Earthquake alerts should use the `\u003carea\u003e` entity to specify the alerting area, not the epicenter. When using `\u003ccircle\u003e`, a non-zero radius is required. `\u003careaDesc\u003e` should indicate the epicenter's location relative to known areas. `\u003cresource\u003e` can link to media like shakemaps. Additional `\u003cparameter\u003e` elements can define magnitude and depth. Example data shows an earthquake of 6.2 magnitude, 23 km deep, 64 km southwest of KAUR-BENGKULU, with multiple resource links and area descriptions.\n"],null,["# Earthquake alerts\n\nThe following sections describe earthquake alerts.\n\nAlert area\n----------\n\n| **Note:** Specify the value of the `\u003carea\u003e` entity as the alerting area, not the incident area. To identify the users who receive an earthquake alert, Google uses the `\u003carea\u003e` entity.\n\n- If you use a `\u003ccircle\u003e` entity to specify an earthquake's epicenter, add a\n non-zero radius instead of a single point:\n\n - Zero-radius circles are considered empty objective areas that Google Public\n Alerts doesn't support.\n\n - Depending on an earthquake's magnitude of depth, your system can select a\n radius from a set of predetermined radii values.\n\n- Many earthquakes are centered in remote or offshore locations. Therefore, we\n recommend that you specify the value of the `\u003careaDesc\u003e` element in terms of\n the epicenter's distance and direction from a more populated or better known\n area.\n\n Example:\n `\u003careaDesc\u003e10 km SW of Christchurch\u003c/areaDesc\u003e`\n- If you have an intensity shakemap image, epicenter map image, or other rich\n media sources, then you can use the `\u003cresource\u003e` element to specify the type\n and content of the resource file.\n\nAdditional parameters\n---------------------\n\nTo describe the earthquake's strength and intensity in `\u003cparameter\u003e` objects,\nPublic Alerts also accepts the element value pairs shown in the following code\nsnippet. \n\n \u003cparameter\u003e\n \u003cvalueName\u003eMagnitude\u003c/valueName\u003e\n \u003cvalue\u003e6.1\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventDepth\u003c/valueName\u003e\n \u003cvalue\u003e12 km\u003c/value\u003e\n \u003c/parameter\u003e\n\nExamples\n--------\n\n \u003c?xml version=\"1.0\" encoding=\"UTF-8\"?\u003e\n \u003calert xmlns=\"urn:oasis:names:tc:emergency:cap:1.2\"\u003e\n \u003cidentifier\u003eIndonesia-InaTEWS-earthquakes-20230415221056\u003c/identifier\u003e\n \u003csender\u003einfo_inatews@bmkg.go.id\u003c/sender\u003e\n \u003csent\u003e2023-04-15T22:10:56+07:00\u003c/sent\u003e\n \u003cstatus\u003eActual\u003c/status\u003e\n \u003cmsgType\u003eAlert\u003c/msgType\u003e\n \u003cscope\u003ePublic\u003c/scope\u003e\n \u003caddresses\u003e0\u003c/addresses\u003e\n \u003ccode\u003eprofile:BMKG-Versi:1\u003c/code\u003e\n \u003cinfo\u003e\n \u003clanguage\u003eid\u003c/language\u003e\n \u003ccategory\u003eGeo\u003c/category\u003e\n \u003cevent\u003eGempabumi\u003c/event\u003e\n \u003curgency\u003ePast\u003c/urgency\u003e\n \u003cseverity\u003eUnknown\u003c/severity\u003e\n \u003ccertainty\u003eObserved\u003c/certainty\u003e\n \u003conset\u003e2023-04-15T22:10:56+07:00\u003c/onset\u003e\n \u003cexpires\u003e2023-04-23T08:10:56+07:00\u003c/expires\u003e\n \u003csenderName\u003eBMKG\u003c/senderName\u003e\n \u003cheadline\u003eInfo Gempa kekuatan:6.2 SR, 15-Apr-23 22:07:07 WIB, (64 km\n BaratDaya KAUR-BENGKULU) ::BMKG -- Informasi sementara\u003c/headline\u003e\n \u003cdescription\u003eTelah Terjadi gempabumi dengan kekuatan: 6.2 SR, 64 km\n BaratDaya KAUR-BENGKULU, waktu gempa: 15-Apr-23 22:07:07 WIB, Gempa\n ini tidak berpotensi TSUNAMI (Event ini sudah direview oleh\n seismologist.)\u003c/description\u003e\n \u003cinstruction\u003eHati-hati terhadap gempabumi susulan yang mungkin\n terjadi\u003c/instruction\u003e\n \u003cweb\u003ehttps://inatews.bmkg.go.id\u003c/web\u003e\n \u003ccontact\u003ehttps://bmkg-content-inatews.storage.googleapis.com/kontakbmkg.html\u003c/contact\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventLocationName\u003c/valueName\u003e\n \u003cvalue\u003eLima wilayah terdekat: 64 km BaratDaya KAUR-BENGKULU, 70 km\n BaratDaya BENGKULUSELATAN, 99 km Tenggara SELUMA-BENGKULU, 142 km\n Tenggara BENGKULU-BENGKULU, dan 462 km BaratLaut\n JAKARTA-INDONESIA\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eShortLocationName\u003c/valueName\u003e\n \u003cvalue\u003e64 km BaratDaya KAUR-BENGKULU\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventOriginTime\u003c/valueName\u003e\n \u003cvalue\u003e2023-04-15T22:07:07+07:00\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventMagnitude\u003c/valueName\u003e\n \u003cvalue\u003e6.2\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventDepth\u003c/valueName\u003e\n \u003cvalue\u003e23 km\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003ePeta Episenter\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/gif\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.gif\u003c/uri\u003e\n \u003c/resource\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003ePeta Intensitas Guncangan\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/jpeg\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.mmi.jpg\u003c/uri\u003e\n \u003c/resource\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003ePeta Peak Ground Acceleration\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/jpeg\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.pga.jpg\u003c/uri\u003e\n \u003c/resource\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003ePeta Peak Ground Velocity\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/jpeg\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.pgv.jpg\u003c/uri\u003e\n \u003c/resource\u003e\n \u003carea\u003e\n \u003careaDesc\u003e64 km BaratDaya KAUR-BENGKULU, 70 km BaratDaya\n BENGKULUSELATAN, 99 km Tenggara SELUMA-BENGKULU, 142 km Tenggara\n BENGKULU-BENGKULU, dan 462 km BaratLaut\n JAKARTA-INDONESIA\u003c/areaDesc\u003e\n \u003ccircle\u003e-4.93,102.85 300.0\u003c/circle\u003e\n \u003c/area\u003e\n \u003c/info\u003e\n \u003cinfo\u003e\n \u003clanguage\u003een\u003c/language\u003e\n \u003ccategory\u003eGeo\u003c/category\u003e\n \u003cevent\u003eEarthquake\u003c/event\u003e\n \u003curgency\u003ePast\u003c/urgency\u003e\n \u003cseverity\u003eUnknown\u003c/severity\u003e\n \u003ccertainty\u003eObserved\u003c/certainty\u003e\n \u003conset\u003e2023-04-15T22:10:56+07:00\u003c/onset\u003e\n \u003cexpires\u003e2023-04-23T08:10:56+07:00\u003c/expires\u003e\n \u003csenderName\u003eBMKG\u003c/senderName\u003e\n \u003cheadline\u003eEarthquake mag:6.2, 15-Apr-23 15:07:07 UTC, (64 km SouthWest\n KAUR-BENGKULU) ::BMKG -- PRELIMINARY REPORT\u003c/headline\u003e\n \u003cdescription\u003eAn earthquake has occurred with magnitude: 6.2 SR, 64 km\n SouthWest KAUR-BENGKULU, at: 15-Apr-23 15:07:07 UTC, No TSUNAMI\n threat (This event has been reviewed by a\n seismologist.)\u003c/description\u003e\n \u003cinstruction\u003eBe careful of aftershocks\u003c/instruction\u003e\n \u003cweb\u003ehttps://inatews.bmkg.go.id\u003c/web\u003e\n \u003ccontact\u003ehttps://bmkg-content-inatews.storage.googleapis.com/kontakbmkg.html\u003c/contact\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventLocationName\u003c/valueName\u003e\n \u003cvalue\u003eFive nearest area: 64 km SouthWest KAUR-BENGKULU, 70 km\n SouthWest BENGKULUSELATAN, 99 km SouthEast SELUMA-BENGKULU, 142 km\n SouthEast BENGKULU-BENGKULU, and 462 km NorthWest\n JAKARTA-INDONESIA\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eShortLocationName\u003c/valueName\u003e\n \u003cvalue\u003eSouthern Sumatra, Indonesia \u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventOriginTime\u003c/valueName\u003e\n \u003cvalue\u003e2023-04-15T22:07:07+07:00\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventMagnitude\u003c/valueName\u003e\n \u003cvalue\u003e6.2\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cparameter\u003e\n \u003cvalueName\u003eEventDepth\u003c/valueName\u003e\n \u003cvalue\u003e23 km\u003c/value\u003e\n \u003c/parameter\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003eEpicenter Map\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/gif\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.gif\u003c/uri\u003e\n \u003c/resource\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003eIntensity Shakemap\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/jpeg\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.mmi.jpg\u003c/uri\u003e\n \u003c/resource\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003ePeak Ground Acceleration Shakemap\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/jpeg\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.pga.jpg\u003c/uri\u003e\n \u003c/resource\u003e\n \u003cresource\u003e\n \u003cresourceDesc\u003ePeak Ground Velocity Shakemap\u003c/resourceDesc\u003e\n \u003cmimeType\u003eimage/jpeg\u003c/mimeType\u003e\n \u003curi\u003ehttps://bmkg-content-inatews.storage.googleapis.com/20230415221056.pgv.jpg\u003c/uri\u003e\n \u003c/resource\u003e\n \u003carea\u003e\n \u003careaDesc\u003e64 km SouthWest KAUR-BENGKULU, 70 km SouthWest\n BENGKULUSELATAN, 99 km SouthEast SELUMA-BENGKULU, 142 km SouthEast\n BENGKULU-BENGKULU, and 462 km NorthWest\n JAKARTA-INDONESIA\u003c/areaDesc\u003e\n \u003ccircle\u003e-4.93,102.85 300.0\u003c/circle\u003e\n \u003c/area\u003e\n \u003c/info\u003e\n \u003c/alert\u003e"]]
