I enjoyed this a lot - it reminded me of 70s schools TV classic Cloudburst. Some lovely summer meadow scenes, with sudden mysterious deluges of rain drowning people. Wasn't quite so keen on the subplot about the mad flood prophet, and his mad Welsh follower (Talfryn 'Llanfairfach here' Thomas), or the extremely mundane motivation for Dr Sturm (!) devising his weather control machine. But I loved the Gilbert Ratchet-style control lever: 'Drizzle', 'Shower', 'Storm', 'Tempest'.
Sue Lloyd is strangely charismatic as Sturm's secretary, and Geoffrey Palmer making his third appearance.
