Value Template Trigger Not Working

Configuration Frontend
1

I have been tinkering with trying to set an input boolean with an automation, using a template as a trigger, and I’ve tried a few things. This is what I have as a trigger for the automation…

{{ 'warning' in state_attr('sensor.nws_alerts', 'state') | lower }}

Essentially, I want to set the input boolean state (of a “severe weather” input boolean) if any National Weather Service alerts contain the word “warning”. I had a severe thunderstorm warning yesterday, and nothing happened.

Anybody know what I’m doing wrong? I will also need to set the input boolean once the “warning” goes away.

Thanks, as always…

2

The attributes of the sensor contain information like this…

Title
Special Weather Statement - Severe Thunderstorm Watch
Event ID
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.59f7a454e9ebc6767abfaec2e1fcff13cbb4c212.001.1 - https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.356e31e13eb1efd20c06ba265a2048ead6642693.001.1
Message type
Alert - Alert
Event status
Actual - Actual
Event severity
Moderate - Severe
Event expires
2023-09-08T16:30:00-04:00 - 2023-09-08T23:00:00-04:00
Display desc
> Headline: Strong thunderstorms will impact portions of southwestern Litchfield, southeastern Ulster and southern Dutchess Counties through 430 PM EDT Status: Actual Message Type: Alert Severity: Moderate

Etc...
3

Your template references an attribute called state that doesn’t exist in the sample data you posted.

Perhaps you want to check if the word warning exists in the title attribute?

{{ 'warning' in state_attr('sensor.nws_alerts', 'title') | lower }}
1 Like
4

Thank you for this, it worked.

I remember seeing some of this discussion around when I initially set my configuration up, and much of mine is just copied from elsewhere. This is a long overdue piece of the puzzle for me, since my goal is to trigger a “Severe Weather” mode when an alert comes in to enable automating around that.

I just had another alert go active, and my input_boolean changed properly. Now I just need that input_boolean to clear when the alert is over… Figuring that out should about do it…

:+1:

1 Like