Dots mark earthquakes. Color indicates the age of a quake by week.
Highlighted quakes are bounded by colored rings. Ring size indicates magnitude. Ring color varies to distinguish a quake's age relative to the other highlighted quakes. The highlight selection box defines the range of time and magnitude highlighted from the timeline.
The map, timeline and the highlight box adjust to center on quakes you spotlight by tapping them or dragging the spotlight cursor.
The timeline plots quakes by time and magnitude and distinquishes which quakes in the timeline are visible in the current map view. Black dots indicate quakes that are currently out of view of the map. Red dots indicate quakes that are visible in the map. Ringed dots identify highlighted quakes.
The spotlight crosshair identifies a specific quake selected from the map or timeline and can be dragged to browse highlighted quakes in time and by magnitude.
Tap to view the latest quakes globally. The map will zoom out to a global view, and adjust timeline to show the latest quakes that are at and above the global magnitude threshold (3.5+ in this example). The badge value ('2' in this example) indicates the number of quakes that have occured since the last update.
The global threshold is set in notification preferences.
Tap to view the latest quakes by region. The map will zoom to the currently defined notification region, and adjust timeline to show the latest quakes that are at and above the regional magnitude threshold (2.5+ in this example). The badge value ('19' in this example) indicates the number of quakes that have occured in the region since the last update.
The region threshold and region is set in notification preferences.
To change notification preferences tap
The notification tab will expand to expose the preference controls. Over the map, orange brackets will appear which indicate the map area that will define the notification region. These brackets change size depending on the map area viewed.
The sliders set the viewing/notification threshold magnitude. To turn off global or regional notifications, push the appropriate slider to the top.
To set the region of interest, navigate to the map area you are interested in and position and scale the map so your area of interest fits within the orange brackets.
Tap to set the region. You can verify the area covered by tapping
Tap to close the controls and update the notification server with your settings.
The app updates quakes when you close preference controls.
The selection box highlights quakes from the timeline which lie inside its boundries. Highlighted quakes are displayed with magnitude rings in the map. Drag the highlight border lines to specify the magnitude and time range you like.
The highlight box will adjust to center around quakes you spotlight.
The spotlight crosshair identifies the specific quake selected in the map or timeline. The crosshair also spotlights quakes that occured around the same time, or are of the same magnitude as the selected quake. You can specify spotlight 'by time' or 'by magnitude'.
To spotlight earthquakes around the same time as the selected quake, tap
To spotlight earthquakes of the same magnitude as the selected quake, tap
When sound is enabled, a short sound plays when a quake is spotlighted. Unique sounds are assigned to each whole magnitude on the Richter scale, up to and including magnitude 8.0.