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Wind curve at Urfeld
Jun 9, 2026
Will the thermal wind kick in at Walchensee today?
99% overnight cloud cover β weak inversion
How the day was forecast at the time, before the rules were recalibrated β shown for comparison only.
| Rule | Signal | Reason |
|---|---|---|
| Pressure gradient (Munich β Innsbruck)? | go | Ξ=0.3 hPa β synoptic flow not opposing N-thermal |
| FΓΆhn (Bolzano β Innsbruck)? | go | no FΓΆhn pressure signature (Ξ=-1.0 hPa) |
| Overnight cooling? | no_go | 99% overnight cloud cover β weak inversion |
| Solar radiation? | no_go | peak solar radiation 203 W/mΒ² below 600 |
| Dew-point spread? | no_go | dew-point spread 2.0Β°C β air too moist, solar energy lost to evaporation |
| Boundary-layer height? | maybe | boundary layer 865 m β shallow mixing |
| Ground moisture / rain? | no_go | soil moisture 0.37 mΒ³/mΒ³ β ground still wet |
| Atmospheric stability? | go | LI 0.1β¦4.7 β stability in normal range |
| Daytime cloud cover? | no_go | 90% low cloud during the day β slopes shaded |
| Upper-level wind (850 / 700 hPa)? | go | upper wind from 290Β° @ 700 hPa 17 kt β neutral |
| Synoptic-flow override? | go | no overwhelming synoptic flow |
| Thermal ignition (live)? | go | ignited at Urfeld |