Add lightning warning badge on home page

main_dashboard.yaml

@@ -173,6 +173,25 @@ views:
             tap_action:
               action: navigate
               navigation_path: /lovelace/weather
+          - type: custom:mushroom-template-card
+            primary: Lightning Warning
+            secondary: >-
+              {{
+              states('sensor.home_tempest_cloud_sensors_lightning_strikes_last_hour')
+              }} strikes in last hour!
+            icon: mdi:lightning-bolt
+            entity: binary_sensor.lightning_warning
+            color: var(--warning-color)
+            badge_icon: mdi:exclamation
+            badge_color: var(--error-color)
+            tap_action:
+              action: none
+            icon_tap_action:
+              action: none
+            visibility:
+              - condition: state
+                entity: binary_sensor.lightning_warning
+                state: 'on'
         column_span: 1
       - type: grid
         cards: