Home Assistant Configuration for Adding Weather Alerts from the US NWS using a REST Sensor

nws_wx_alert_rest.txt

This will allow several functions including a persistent pop-up notification on your HA front end, a notification to whichever notify service you use (I’m using Pushbullet in this example), and, if you use another custom component (https://community.home-assistant.io/t/echo-devices-alexa-as-media-player-testers-needed/58639), it will also trigger an announcement to all of your Echo devices.

You next need to find either your NWS Zone ID or County ID. It is better to use both ID's here.

You can find your Zone or County ID by going to https://alerts.weather.gov/, scroll down to your state and click on the “zone list” and/or "county list" then look for the entry for your county.

Once you have your desired ID you create a sensor, replacing my id (INZ009, INC033) with yours. The ID is case sensitive!

Then when you have your ID's, enter them into the configuration below.

Here are all the sections required in the configuration.yaml:

---------------------------------

sensor:
  - platform: rest
    resource: https://api.weather.gov/alerts/active/count
    name: NWS Alert Count Raw
    value_template: >
      {% if value_json is defined and value_json.zones.INZ009 is defined %}
        {{ value_json.zones.INZ009 }}
      {% elif value_json is defined and value_json.zones.INC033 is defined %}
        {{ value_json.zones.INC033 }}
      {% else %}
        0
      {% endif %}
    headers:
      User-Agent: Homeassistant
      Accept: application/ld+json
    scan_interval: 60
  
  - platform: template
    sensors:
      nws_alert_count_filtered:
        friendly_name: NWS Alert Count
        entity_id: sensor.nws_alert_count_raw
        value_template: >
          {% if is_state('sensor.nws_alert_count_raw', 'unavailable') or is_state('sensor.nws_alert_count_raw', 'unknown') %}
            {{ states.sensor.nws_alert_count_filtered.state }}
          {% else %}
            {{ states.sensor.nws_alert_count_raw.state }}
          {% endif %}

    
  - platform: rest
    resource: https://api.weather.gov/alerts/active?zone=INZ009,INC033
    name: NWS Alert Event Raw
    value_template: >
      {% if value_json.features[0] is defined %}
        {{ value_json['features'][0]['properties'].event }}
      {% else %}
        None
      {% endif %}
    json_attributes:
      - features
    headers:
      User-Agent: Homeassistant
      Accept: application/geo+json
    scan_interval: 60
  
  - platform: template
    sensors:
      nws_alert_event_filtered:
        friendly_name: NWS Alert Event
        entity_id: sensor.nws_alert_event_raw
        value_template: >
          {% if is_state('sensor.nws_alert_event_raw', 'unavailable') or is_state('sensor.nws_alert_event_raw', 'unknown') %}
            {{ states.sensor.nws_alert_event_filtered.state }}
          {% else %}
            {{ states.sensor.nws_alert_event_raw.state }}
          {% endif %}
  
  - platform: template
    sensors:
      nws_alert_event_2:
        friendly_name: NWS Alert Event 2
        entity_id: sensor.nws_alert_event_raw
        value_template: >
          {% if state_attr('sensor.nws_alert_event_raw', 'features')[1] is defined %}
            {{ state_attr('sensor.nws_alert_event_raw', 'features')[1]['properties'].event }}
          {% else %}
            None
          {% endif %}
      nws_alert_event_3:
        friendly_name: NWS Alert Event 3
        entity_id: sensor.nws_alert_event_raw
        value_template: >
          {% if state_attr('sensor.nws_alert_event_raw', 'features')[2] is defined %}
            {{ state_attr('sensor.nws_alert_event_raw', 'features')[2]['properties'].event }}
          {% else %}
            None
          {% endif %}

---------------------------------------------

automation:
  - alias: 'NWS Weather Alert Pop Up Control'
    trigger:
      platform: state
      entity_id: sensor.nws_alert_count_filtered
    condition:
      - condition: template  
        value_template: '{{states.sensor.nws_alert_count_filtered.state | int > 0}}'
    action:
      service: script.nws_popup_on_wx_alert
     
  - alias: NWS Notification Weather Alert
    trigger:
      platform: state
      entity_id: sensor.nws_alert_count_filtered
    condition:
      - condition: template
        value_template: '{{states.sensor.nws_alert_count_filtered.state | int > 0}}'
    action:
      - service: notify.pushbullet_notify
        data:
          message: "NWS: {{ states.sensor.nws_alert_event_filtered.state }}"
        
  - alias: NWS Announcement Weather Alert
    initial_state: 'on'
    trigger:
      - platform: state
        entity_id: sensor.nws_alert_count_filtered
    condition:
      condition: and
      conditions:
        - condition: template
          value_template: '{{states.sensor.nws_alert_count_filtered.state | int > 0}}'
        - condition: template
          value_template: "{{ (('Severe' in states.sensor.nws_alert_event_filtered.state) or ('Tornado' in states.sensor.nws_alert_event_filtered.state)) and 'Warning' in states.sensor.nws_alert_event_filtered.state }}"
    action:
      #- service: media_player.volume_set
      #  data:
      #    entity_id:
      #      - media_player.computer_room_dot
      #      - media_player.kitchen_dot
      #      - media_player.livingroom_dot
      #      - media_player.master_bedroom_dot
      #    volume_level: 0.9
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.computer_room_dot
            - media_player.kitchen_dot
            - media_player.livingroom_dot
            #- media_player.master_bedroom_dot
            - media_player.garage_dot
            - media_player.big_room_dot
          message: "Attention!,,,Attention!,,,The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_filtered.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[0].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
      - delay: '00:00:10'
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.computer_room_dot
            - media_player.kitchen_dot
            - media_player.livingroom_dot
            #- media_player.master_bedroom_dot
            - media_player.garage_dot
            - media_player.big_room_dot  
          message: "Attention!,,,Attention!,,,The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_filtered.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[0].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
        
  - alias: NWS Announcement Weather Alert 2
    initial_state: 'on'
    trigger:
      - platform: state
        entity_id: sensor.nws_alert_count_filtered
    condition:
      condition: and
      conditions:
        - condition: template
          value_template: '{{states.sensor.nws_alert_count_filtered.state | int > 1}}'
        - condition: template
          value_template: "{{ (('Severe' in states.sensor.nws_alert_event_2.state) or ('Tornado' in states.sensor.nws_alert_event_2.state)) and 'Warning' in states.sensor.nws_alert_event_2.state }}"
    action:
      #- service: media_player.volume_set
      #  data:
      #    entity_id:
      #      - media_player.computer_room_dot
      #      - media_player.kitchen_dot
      #      - media_player.livingroom_dot
      #      - media_player.master_bedroom_dot
      #    volume_level: 0.9
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.computer_room_dot
            - media_player.kitchen_dot
            - media_player.livingroom_dot
            #- media_player.master_bedroom_dot
            - media_player.garage_dot
            - media_player.big_room_dot
          message: "Attention!,,,Attention!,,,A second severe weather alert has been issued. The National 
 Weather Service has issued a 
        {{ states.sensor.nws_alert_event_2.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[1].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
      - delay: '00:00:10'
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.computer_room_dot
            - media_player.kitchen_dot
            - media_player.livingroom_dot
            #- media_player.master_bedroom_dot
            - media_player.garage_dot
            - media_player.big_room_dot  
          message: "Attention!,,,Attention!,,,A second severe weather alert has been issued. The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_2.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[1].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
    
  - alias: NWS Announcement Weather Alert for MBR
    initial_state: 'on'
    trigger:
      - platform: state
        entity_id: sensor.nws_alert_count_filtered
    condition:
      condition: and
      conditions:
        - condition: template
          value_template: '{{states.sensor.nws_alert_count_filtered.state | int > 0}}'
        - condition: template
          value_template: "{{ 'Tornado' in states.sensor.nws_alert_event_filtered.state and 'Warning' in states.sensor.nws_alert_event_filtered.state }}"
    action:
      #- service: media_player.volume_set
      #  data:
      #    entity_id:
      #      - media_player.computer_room_dot
      #      - media_player.kitchen_dot
      #      - media_player.livingroom_dot
      #      - media_player.master_bedroom_dot
      #    volume_level: 0.9
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.master_bedroom_dot
          message: "Warning!,,,Warning!,,,The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_filtered.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[0].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
      - delay: '00:00:10'
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.master_bedroom_dot
          message: "Warning!,,,Warning!,,,The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_filtered.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[0].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
          
  - alias: NWS Announcement Weather Alert 2 for MBR
    initial_state: 'on'
    trigger:
      - platform: state
        entity_id: sensor.nws_alert_count_filtered
    condition:
      condition: and
      conditions:
        - condition: template
          value_template: '{{states.sensor.nws_alert_count_filtered.state | int > 1}}'
        - condition: template
          value_template: "{{ 'Tornado' in states.sensor.nws_alert_event_2.state and 'Warning' in  states.sensor.nws_alert_event_2.state }}"
    action:
      #- service: media_player.volume_set
      #  data:
      #    entity_id:
      #      - media_player.computer_room_dot
      #      - media_player.kitchen_dot
      #      - media_player.livingroom_dot
      #      - media_player.master_bedroom_dot
      #    volume_level: 0.9
      - service: media_player.alexa_tts
        data_template:
          entity_id:
            - media_player.master_bedroom_dot
          message: "Warning!,,,Warning!,,,A second severe weather alert has been issued. The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_2.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[1].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."
      - delay: '00:00:10'
      - service: media_player.alexa_tts
        data_template:
          entity_id: 
            - media_player.master_bedroom_dot
          message: "Warning!,,,Warning!,,,A second severe weather alert has been issued. The National Weather Service has issued a 
        {{ states.sensor.nws_alert_event_2.state }} for your area. 
        It expires at {{ as_timestamp(state_attr('sensor.nws_alert_event_raw', 'features')[1].properties.expires)| timestamp_custom('%-I:%M %p on %-m-%-d-%Y') }}."

---------------------------------------------------------------

script:
  nws_popup_on_wx_alert:
    alias: NWS Weather Alert Pop Up
    sequence:
        ## Dismiss any current alert so the UI isn't filled 
        ## up with these if there are more then one.
        ## Only show the latest alert
      - service: persistent_notification.dismiss
        data:
          notification_id: "nwswxalert"
        ## Create a new persistant notification in the UI for a new alert
      - service_template: >
          {% if states.sensor.nws_alert_event_filtered.state != 'None' %}
            persistent_notification.create
          {% endif %}
        data_template:
          notification_id: "nwswxalert"
          message: "{{ state_attr('sensor.nws_alert_event_raw', 'features')[0].properties.description }}"
          title: '{{ states.sensor.nws_alert_event_raw.state }}'
          
-------------------------------------------------------------

I created two announcements so that a minor event won't wake you nup in the middle of the night.

You’ll notice I repeat the announcement twice in case the first announcement doesn’t wake you up.

And I haven’t worked out the volume setting part yet. If anyone has any working solutions feel free to let me know.

The script above generates a persistent notification pop-up.

Im needing some help i keep getting an error on mine and im not really sure how to solve the problem.

`#NWS Alerts Attempt 1

• platform: rest
  resource: https://api.weather.gov/alerts/active/count
  name: NWS Alert Count
  value_template: >
  {% if value_json.zones. ILC043 is defined %}
  {{ value_json.zones. ILC043 }}
  {% else %}
  0
  {% endif %}
  headers:
  User-Agent: Homeassistant
  Accept: application/ld+json
  scan_interval: 60

• platform: template
  sensors:
  nws_alert_count_filtered:
  friendly_name: NWS Alert Count
  entity_id: sensor.nws_alert_count_raw
  value_template: >
  {% if is_state('sensor.nws_alert_count_raw', 'unavailable') or is_state('sensor.nws_alert_count_raw', 'unknown') %}
  {{ states.sensor.nws_alert_count_filtered.state }}
  {% else %}
  {{ states.sensor.nws_alert_count_raw.state }}
  {% endif %}

• platform: rest
  resource: https://api.weather.gov/alerts/active?zone=INZ009,INC033
  name: NWS Alert Event Raw
  value_template: >
  {% if value_json.features[0] is defined %}
  {{ value_json['features'][0]['properties'].event }}
  {% else %}
  None
  {% endif %}
  json_attributes:

  • features
    headers:
    User-Agent: Homeassistant
    Accept: application/geo+json
    scan_interval: 60

• platform: template
  sensors:
  nws_alert_event_filtered:
  friendly_name: NWS Alert Event
  entity_id: sensor.nws_alert_event_raw
  value_template: >
  {% if is_state('sensor.nws_alert_event_raw', 'unavailable') or is_state('sensor.nws_alert_event_raw', 'unknown') %}
  {{ states.sensor.nws_alert_event_filtered.state }}
  {% else %}
  {{ states.sensor.nws_alert_event_raw.state }}
  {% endif %}

• platform: template
  sensors:
  nws_a;ert_event_2:
  friendly_name: NWS Alert Event 2
  entity_id: sensor.nws_alert_event_raw
  value_template: >
  {% if state_attr('sensor.nws_alert_event_raw', 'features')[1] is defined %}
  {{ state_attr('sensor.nws_alert_event_raw', 'features')[1]['properties'].event }}
  {% else %}
  None
  {% endif %}
  nws_alert_event_3:
  friendly_name: NWS Alert Event 3
  entity_id: sensor.nws_alert_event_raw
  value_template: >
  {% if state_attr('sensor.nws_alert_event_raw', 'features')[2] is defined %}
  {{ state_attr('sensor.nws_alert_event_raw', 'features')[2]['properties'].event }}
  {% else %}
  None
  {% endif %}
  `

any thoughts on what to do i keep getting the error ?String does not match the pattern of DEPRECATED*"
im getting this error every time i see
entity_id: sensor.nws_alert_event_raw

ignore the indent errors if there not working (there not showing correctly in my preview but they are right in my yaml

nws_a;ert_event_2
ignore that line found that and fixed it but i still have other errors like stated before

remove the "entiity_id:" lines. That option has been deprecated for template sensors.

remove the "entiity_id:" lines. That option has been deprecated for template sensors.

Ok did that and got rid of my errors not sure why it worked this time. because i did that before and it gave me more errors. but looks like in theory it should be working now.

thank you

will repost if i cant get the alerts on Alexa to work

I took this and refactored it heavily to match the syntax updates for things such as conditions and actions. I also made many of the JSON fields sensor attributes so they're distinct and separate from each other. https://github.com/tteggelit/ha-configs/blob/main/packages/severe_weather.yaml