Viper HD (10) colours indicate approximate intensity. They do not give exact thresholds or identify hail or mixed precipitation.
LibreWXR uses model data to distinguish snow from rain.
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Source: LibreWXR · observed radar and nowcast. Map: Natural Earth / OpenMapTiles.
The pale overlay marks radar coverage published by LibreWXR. Outside it, the absence of echoes does not prove dry weather. This indicates data availability, not precipitation intensity.