Snow forecast (using sounding forecast)
ECMWF's forecast for Thursday morning
for an area (yellow dashed line) in Northern Greece
shows rain (not snow).
"Snow depth" map shows: "no snow"
and "precipitation type" map shows the precipitation will be in the form of rain.
... now, let use the "sounding forecast" tool for this area ...
... as we can see, at the height of 1144m, the temperature is 0 C.
So, we assume, that we must expect the precipitation must be in the form of SNOW.
If we take into account that snows even in temperatures of +2 C (but melts in a while)
we must expect snow in areas above 900m.
Conclusion: by using soundings we can have more precise forecast, especialy for "borderline" conditions (rain - snow).
Now, I'll wait till Thursday to see if will snow in the hills and mountains
of the above mentioned area (near Thessaloniki, Greece) :-)