polytropos' photos with the keyword: Wettervorhersage

Kurzfristige Wetterprognose mit hoher Trefferquote, nach der Petrographie-Methode. weather forecast (petrographical system): ● wet stone – it's raining ● dry stone – no rain ● shadow below the stone – sunny ● white layer on the stone – it is snowing ● the stone is blurred – it's foggy ● the stone is swinging – it's windy ● the stone is bouncing up and down – earthquake! ● no stone detectable – tornado alert! Well, if no stone is detectable and you still are in upright position while watching the (missing) stone, there is also a small probability of souvenir-chasing. :-) Don't underestimate the Swiss technology! (47.02333, 07.39522); [10°]