Will the thermal wind kick in at Walchensee today?
11 of 12 rules green.
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? | go | clear night: 6% cloud cover |
| Solar radiation? | go | peak solar radiation 847 W/mΒ² β₯ threshold |
| Dew-point spread? | maybe | dew-point spread 4.1Β°C β marginal |
| Boundary-layer height? | go | boundary layer 1255 m β deep mixing |
| Ground moisture / rain? | go | dry ground (soil moisture 0.31 mΒ³/mΒ³) |
| Atmospheric stability? | go | LI -1.4β¦-0.4 β stability in normal range |
| Daytime cloud cover? | go | 0% low cloud β slopes in full sun |
| Upper-level wind (850 / 700 hPa)? | go | upper wind from 217Β° @ 700 hPa 12 kt β neutral |
| Synoptic-flow override? | go | no overwhelming synoptic flow |
| Thermal ignition (live)? | go | ignited at Urfeld |