Walchensee wind: forecast and measurements

30 days of forecast vs. what actually happened at the lake. Click a single day to see its details.

Last 30 days

Rule-based forecast (actually used)
ML-based forecast — logistic (experimental)
ML-based forecast — HistGradientBoosting (black-box model, experimental)
Actual measurements (session ≥ 1 h)
Mon Oct 12 Tue Nov 10
session (≥ 1 h ≥ 11 kt) marginal (≥ 1 h ≥ 8 kt) no wind no data thunderstorm (forecast rows: predicted · actual row: observed)

Oct 24, 2026

81106:0021:0008:48 · avg 3.0 kt · gust 5.9 kt09:16 · avg 1.3 kt · gust 3.2 kt09:49 · avg 1.1 kt · gust 4.3 kt09:59 · avg 1.0 kt · gust 3.2 kt10:09 · avg 1.2 kt · gust 3.2 kt10:19 · avg 2.2 kt · gust 4.9 kt10:29 · avg 6.3 kt · gust 11.9 kt10:39 · avg 8.1 kt · gust 14.6 kt10:49 · avg 8.3 kt · gust 15.1 kt10:59 · avg 7.9 kt · gust 15.1 kt11:09 · avg 6.7 kt · gust 13.0 kt11:19 · avg 2.5 kt · gust 6.5 kt11:29 · avg 4.8 kt · gust 11.9 kt11:39 · avg 6.9 kt · gust 10.8 kt11:49 · avg 7.5 kt · gust 10.8 kt11:59 · avg 8.5 kt · gust 13.0 kt12:09 · avg 10.1 kt · gust 16.2 kt12:19 · avg 8.9 kt · gust 16.2 kt12:29 · avg 10.7 kt · gust 14.6 kt12:39 · avg 11.2 kt · gust 17.3 kt12:49 · avg 12.6 kt · gust 17.3 kt12:59 · avg 12.5 kt · gust 15.1 kt13:09 · avg 12.2 kt · gust 20.0 kt13:19 · avg 10.4 kt · gust 20.0 kt13:29 · avg 9.4 kt · gust 13.0 kt13:39 · avg 7.7 kt · gust 11.9 kt13:49 · avg 8.9 kt · gust 16.2 kt13:59 · avg 8.6 kt · gust 13.5 kt14:09 · avg 10.1 kt · gust 16.2 kt14:19 · avg 9.2 kt · gust 16.2 kt14:29 · avg 7.9 kt · gust 10.8 kt14:39 · avg 6.9 kt · gust 13.5 kt14:49 · avg 10.2 kt · gust 14.6 kt14:59 · avg 11.0 kt · gust 15.1 kt15:09 · avg 7.4 kt · gust 13.5 kt15:19 · avg 10.2 kt · gust 15.1 kt15:29 · avg 10.2 kt · gust 14.6 kt15:39 · avg 11.3 kt · gust 15.1 kt15:49 · avg 11.4 kt · gust 16.2 kt15:59 · avg 12.6 kt · gust 16.2 kt16:09 · avg 7.5 kt · gust 14.6 kt16:19 · avg 10.8 kt · gust 16.2 kt16:29 · avg 8.8 kt · gust 16.2 kt16:39 · avg 5.9 kt · gust 11.9 kt16:49 · avg 6.5 kt · gust 14.6 kt16:59 · avg 9.2 kt · gust 13.5 kt17:09 · avg 10.0 kt · gust 17.3 kt17:15 · avg 10.0 kt · gust 13.0 kt
avg wind gust ignition (8 kt) session (11 kt)
For Oct 24, 2026 · as written at the time

NO GO

700 hPa crossflow 32 kt — valley decoupled

⚡ Storm risk: the thermal often runs well until the front — watch the sky, come in early.

🤖 ML — logistic experimental NO GO GO 11% · MAYBE 35% · NO GO 54%

Strongest inputs — (−) pressure Δ (thermik), morning solar, dew-point spread.

🤖 ML — HGB · black box experimental NO GO GO 2% · MAYBE 4% · NO GO 94%

Most distinctive inputs: morning solar, Innsbruck pressure, Bolzano pressure.

Experimental shadow models — they never drive the verdict. How good are they? →

Previous forecast method

How the day was forecast at the time, before the rules were recalibrated — shown for comparison only.