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"I came back at about 11 o'clock to find this huge crater in my garden. "My friend had called me. She works for my husband, from the house. She said she heard an almighty bang and felt the house shake and looked out the window and saw white fragments spread across the garden. "When I came back we realised it was ice."
A katabatic wind, from the Greek word κατάβασις katabasis meaning "descending", is the technical name for a drainage wind, a wind that carries high density air from a higher elevation down a slope under the force of gravity.