Clouds are no joke - never have been ...
Did anyone see the "Time Team" (can't recall if it was a regular or special) where they went to France and recovered a Spitfire that crashed shortly after takeoff ?
The exact cause of the downing was a mystery, until they extracted the wreckage (pilot was recovered and buried at the time). The found the guns unfired (so unlikely to be in combat) and the propellers feathered - indicating a stall and restart procedure.
They surmised the plane hit something while trying top restart after emerging from clouds.