Dense fog: a row of trees receding into distance where each successive tree is paler and lower in contrast than the one before, the furthest ones dissolving completely into white, near objects still holding their color, extreme aerial perspective

Heavy downpour: rain falling hard enough that individual streaks are visible as bright diagonal lines against a dark background, water bouncing back up off the pavement in a low mist, everything soaked and reflective, umbrella silhouettes blurred behind the curtain of rain

Blizzard: snow driven almost horizontally by strong wind, streaking across the frame in near-parallel lines rather than falling, visibility collapsing to a few meters, a dark figure barely discernible through the whiteout, drifts building against every vertical surface

Heavy dust haze over a city: the sun reduced to a pale flat disc that can be looked at directly, everything tinted ochre and yellow, buildings only a few blocks away already faded into the murk, no shadows because the light is completely diffused

Frost on a windowpane at dawn: fern-shaped ice crystals branching across the glass in interlocking fronds, each needle catching a faint blue highlight, the pattern denser at the edges and thinning toward the center, the world outside a soft pale blur

A rainbow after a passing shower: a full arc against a dark retreating storm cloud while the foreground field is lit by sudden bright sunlight, the sky inside the arc noticeably brighter than outside it, wet grass glittering, very wide framing

A lightning bolt striking a wide open plain at night. The bolt's blue-white flash BRIGHTLY ILLUMINATES the whole landscape for that instant: the grass, a lone tree, fence posts and the ground texture are all clearly visible and lit, casting hard shadows. The scene must NOT be a black frame with only a bolt.

Absolute stillness before weather: a lake surface so completely without wind that it forms a perfect unbroken mirror of the sky and the far shore, not a single ripple anywhere, the waterline nearly invisible, heavy silent air, muted pre-storm light

Heat shimmer over asphalt: the air just above a sun-baked road rippling and distorting so that distant cars appear to wobble and detach from the ground, a false mirror of sky pooling on the road surface like water, hard overhead summer light