Threatening weather

An opportunist sketch . Whilst driving home this afternoon along a moorland road the sun suddenly shone across the landscape against a brooding sky. Above the moorland it also lit a small cloud making it shine almost pure white infront of the darker stormclouds. As quickly as it happened the moment passed and the light darkened. With no place or time to pull over I made this sketch from memory as soon as I reached home. An attempt to fix the abstract patterns of light and dark tones and colours with no real concern for topographical accuracy.