Having grown up in the American Midwest's "Tornado Alley," if I saw a yellow sky, I'd head for something underground. Usually, though, yellow sky followed a tornado and green sky preceded it. My experience is that yellow or green means hail in the clouds. Do you have hail storms in England? For years I kept a hailstone the size of a large grapefruit in my freezer. Major damage to gardens, trees, houses, cars and livestock when that happens.
Yes, Bill, electricity travels upwards! I haven't had that experience, usually reserved for males, but I did see the result when a small male friend inadvertently relieved himself on an electric fence. Poor little guy did quite a dance.
I love the expression, stair rodding. I've seen rain like that, but, unfortunately, not very recently. We really, really need the rain. Burning outdoors is banned here (East Tennessee) now as the grass and leaves crunch underfoot and the ground is cracked. The pumpkins are pitiful small things, and no late hay cutting either. It is clouding up now, though, so maybe ...
Giac