These three weather factors have the strongest influence on today’s forecast compared with an average day in the season.
Morning cloud cover
94.1 %
Works against Ora
Morning cloud reduces solar radiation and therefore the energy available for Ora’s thermal development.
Morning solar radiation
396.0 W/m²
Works against Ora
Strong morning sunshine heats slopes and valleys. This builds the pressure difference that draws Ora towards the northern end of the lake.
Bolzano−Verona pressure difference (morning)
1.1 hPa
Supports Ora
The pressure gradient between Bolzano and Verona represents the pressure distribution between the Alps and Po Valley. This affects the thermal draw through the Sarca Valley.
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Daytime precipitation
0.0 mm
Supports Ora
Rain and showers limit heating and can interrupt the local circulation. Daytime precipitation therefore usually works against Ora.
South–north wind component at 100 m
2.8 km/h
Works against Ora
The south–north wind component shows whether the broad flow is aligned with Ora or works against it.
Innsbruck−Verona pressure difference (morning)
1.8 hPa
Works against Ora
The Innsbruck−Verona gradient describes the broad pressure distribution between the Alps and Po Valley. A very strong northerly gradient can suppress Ora; a favourable distribution lets it develop more freely.
Pressure-gradient trend (morning → midday)
-0.4 hPa
Works against Ora
This value shows how the Innsbruck−Verona pressure gradient changes from early morning to midday.
Supports Ora
High humidity often accompanies weaker heating, haze or cloud. In drier air, the thermal circulation can usually develop more freely.
West–east wind component at 100 m
3.3 km/h
Works against Ora
The west–east component of the wind at 100 metres lets the model assess the direction of the broad flow separately from its overall speed.
Daily maximum temperature
22.9 °C
Works against Ora
The expected maximum temperature in Torbole represents the amount of daytime heating and the thermal energy available.
Wind at 100 m (midday)
4.3 km/h
Supports Ora
Wind at 100 metres represents the broad flow over the lake. Depending on its direction, it can support or override the local wind system.
Po Valley–Alps heating contrast
3.4 °C
Supports Ora
The temperature contrast between Verona and Innsbruck represents the different rates of heating in the Po Valley and Alpine region, and therefore the thermal drive.
Whether a factor raises or lowers the probability comes from the statistical model. This shows a statistical relationship, not proof of a single physical cause. All listed factors feed into the forecast; the three strongest are highlighted.