30 days of forecast vs. what actually happened at the lake. Click a single day to see its details.
Aug 21, 2026
avg wind
gust
ignition (8 kt)
session (11 kt)
For Aug 21, 2026 ·
as written at the time
NO GO
70% daytime cloud + only 314 W/m² solar — no insolation to drive a thermal
⚡ Storm risk: the thermal often runs well until the front — watch the sky, come in early.
🤖 ML — logistic
experimental
NO GO
GO 24% ·
MAYBE 23% ·
NO GO 53%
Strongest inputs —
(+) dew-point spread; (−) morning solar, pressure Δ (thermik).
🤖 ML — HGB · black box
experimental
GO
GO 78% ·
MAYBE 2% ·
NO GO 19%
Most distinctive inputs: morning solar, Innsbruck pressure, overnight cloud.
Experimental shadow models — they never drive the verdict.
How good are they? →