For each stage of the race, the weather bullettin shows the evolution for the upcoming 36 hours in blocks of six hours. The main weather issues are highlighted with specific icons (thunderstorm, rain, snow, wind, fog, cold, hot), with the indication of the wind-chill (the feeling of temperature due to the combination of cold air and wind) at the specified point of the race, only when the temperature is below 0 °C.
For each weather issue, the icon may be absent (probability of occurrence <30%, but not excluded), or black on a white background (less significant) or white on a black background (more significant), depending on the probability of occurrence, the expected intensity and the portion of territory affected. Fog is indicated when it is expected to affect large parts of the route and not just the high altitudes, where even a single cloud can locally cause a strong reduction in visibility. A brief legend in English in the weather bulletin helps the reader; the altimetric profile and the location in the regional territory of the stage of interest are also highlighted.
For a more comprehensive view of the weather forecast for the regional territory, please refer to the general weather bulletin - containing the description of the situation, the details for the first three days and a trend for the following four days - updated daily (in Italian, French and English).
