An Overview of Weather Modification Activities in Alberta

R J Deibert


Interest and activities in hail research and weather modification have been ongoing in Alberta for almost three decades. Crop loss from hailstorm damage has always been a major problem in Alberta. The economic losses associated with hailstorms are now up to $100 million annually. Following several years of costly hail losses in the early 1950’s, independent research and operational programs began. The losses prompted farmers in a district and county north and east of Calgary to seek voluntary contributions to hire I.P. Krick and Associates of Canada Ltd. to carry out a commercial hail suppression program. Later, farmers from two additional counties joined the program and formed the Alberta Weather Modification Co-operative (AWMC). The Krick program operated from 1956 to 1968 using groundbased silver iodide generators; supplemental seeding from aircraft began in 1960 (Krick and Stone, 1975).

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