Many public places, and some private ones, contain a finely tuned meteorological instrument known as a “Weather Rock”. To many observers, it appears to be an ordinary stone hanging by a rope to a tripod. Here’s how it works:
- If the rock is wet, it’s raining.
- If the rock is swinging, the wind is blowing.
- If the rock casts a shadow, the sun is shining.
- If the rock does not cast a shadow and is not wet, the sky is cloudy.
- If the rock is difficult to see, it is foggy.
- If the rock is white, it is snowing.
- If the rock is coated with ice, there is a frost.
- If the ice is thick, it’s a heavy frost.
- If the rock is bouncing, there is an earthquake.
- If the rock is under water, there is a flood.
- If the rock is warm, it is sunny.
- If the rock is missing, there was a tornado.
- If the rock is wet and swinging violently, there is a hurricane.
- If the rock can be felt but not seen, it is night time.
- If the rock has white splats on it, watch out for birds!!
In my experience, the Weather Rock is as accurate as any other instrument in defining the conditions present.




