Simple snow depth chart card

Who it’s for

City road maintenance crews, ski resort operators, and avalanche risk assessors ask “how has snow depth changed over time, without the clutter of delta comparisons?” They want to see the current depth and a trend line in one card, nothing more.

What it does

A sensor currently reading 22 cm shows a dark-blue value — Moderate — above a chart that reveals whether depth has been building steadily or leveled off after an overnight event.

• Large current snow-depth value color-coded across six bands from Trace to Extreme
• Time-series chart of snow-depth readings over the selected time window, averaged per interval
• Shows one sensor’s data; it does not compare multiple gauges or show period-over-period deltas

How to set up

Data keys

Key	Role	Type	Description
snow	Chart series	Timeseries	Snow depth in cm; drives the chart. The Latest value overlay is automatically derived from this same key
Latest	Latest value	Timeseries	The headline figure above the chart. Its own color ranges are where the band colors are edited

The widget ships with a simulated function datasource key labeled Snow depth, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

If the key has never reported for the selected time window, the chart is empty and the value overlay shows no data.

Value ranges

Range (cm)	Level	Color
0–1	Trace	Light Blue
1–10	Light	Medium Blue
10–30	Moderate	Dark Blue
30–60	Deep	Deep Blue
60–90	Very Deep	Orange
90+	Extreme	Red

How to customize

• To use your own snow-depth thresholds — edit the color ranges on the Latest data key; adjust the six default bands to match your operational thresholds.
• To hide or show the chart — toggle Show chart in the widget settings.
• To change the chart line color — set Chart color.
• To show max depth in the legend instead of avg — edit the Legend settings; max is often the most useful aggregation for snow depth.
• To hide the entity name subtitle or the timestamp — turn off Show subtitle or Show date.
• To match your dashboard’s fonts — set the font options under each data key’s appearance settings.

Tips

• Use this card when the accumulation shape matters more than the exact period-over-period change. Add the full snow depth chart card if you need a delta cm figure alongside the chart.
• Switch the legend aggregation to max to show the peak depth for the selected window — useful when confirming overnight maximums for avalanche assessments.
• A flat chart line during sub-zero temperatures indicates the snowpack is stable; a rising line during above-zero temperatures may indicate wet snow accumulation, which carries higher avalanche risk than dry powder.