GeonetNZ Quake alerts

Configuration
1

Hi,

First time poster. I’m trying to get a GeoNetNZ Quake alert setup so that when an earthquake happens in a certain part of NZ, I get a notification to my mobile phone. I’ve got GeoNet setup as follows in my configuration.yaml:

geonetnz_quakes:
  radius: 100.0
  minimum_magnitude: 4.5
  latitude: -41.1249
  longitude: 175.0656

This is setting up a sensor correctly. However, I’m unsure how to configure an automation to send an alert when a quake goes off from the sensor. If I try using a state trigger, it gets triggered each time a scan is done (I think) as I get numerous alerts every few minutes.

  trigger:
  - platform: state
    entity_id: sensor.geonet_nz_quakes
  condition: []
  action:
  - service: notify.persistent_notification
    data:
      message: Earthquake of 5.0 or more has hit NZ

I can’t tell how to hook up the trigger to some form of “number of quakes changed” state change either, as I can’t seem to find any references to an attribute of that sort.

I’m probably missing something obvious, is anyone able to point me in the right direction?

Thanks,

GMG.