New snow and forecasted snow are different...
It would be a lot better if there was a label for forecasted snow and 'new snow' were different. When a forecaster tells you there is 'new snow' it's a little different than saying there is snow forecasted.... just my two cents as a fellow developer.
Where do you see the same label for new snow and forecast snow?
´New snow’ is the accumulation of snow falls during the next 12h, 48h, 3days, 5 days, 10 days. It is called ‘New snow’ because this layer of snow is different from the ‘Snow depth’ forecast which is the accumulation of old snow ie before the forecast date plus the next falls and the natural compacting of the snow cover.
More explanation in:
New snow: Total snow accumulation in the next hours or days. To estimate the depth of snow, we use the ratio: 1mm of rain = 1cm of snow.
Snow depth: Forecasted depth and density of snow in the next days. Actual snow depth will be influenced by many factors like orography, cities and so on.
‘New snow’ for snow is the same as ‘Rain accumulation’ for rain. But using ‘snow accumulation‘ could lead to misunderstanding.
On the other hand ‘snow forecasts’ are not cumulative over a long time lapse but just during 3 hours or 1 hour.