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Although most regions of Canada have experienced drought, many of the southern regions of the Canadian Prairies and interior British Columbia are most susceptible. During the past two centuries, at least 40 droughts have occurred in western Canada with multi-year episodes being observed in the 1890s, 1910s, 1930s, 1960s, 1980s, and the early 2000s.
[4] [5] Vegetation throughout Canada was exceptionally dry, leading to tinder-like conditions. Lightning strikes in Canada's west, the most common cause of wildfires in Canada, were not commonly accompanied by any significant rain. [6] Farms in the region which still have access to irrigation also suffered heavy grasshopper infestations. [7]
The area has witnessed an increased frequency of wildfires, as Canada's wildfire season now starts a month earlier than it used to and the annual area burned is twice what it was in 1970. [41] In 2023, fires in Canada were estimated to have released 480 megatonnes of carbon, 23% of the world's wildfire-related carbon emissions for the year. [ 42 ]
As of Dec. 31, 70% of the country was abnormally dry or in drought, according to Agriculture Canada, with the worst conditions in southern Alberta, western Saskatchewan and north-central British ...
Vancouver, the largest city in British Columbia, received less than a sixth of its average rainfall in August and September and has received only 0.2 millimetres so far in October, according to ...
Persistent drought and months of above-average temperatures have raised the risk of a repeat of last year’s record-breaking wildfires, prompting federal ministers to wave a red warning flag ...
Due to wildfire emissions, Canada broke its record for annual carbon emissions in late June. [158] As of late August, the wildfires had released 327–355 megatonnes of carbon into the atmosphere. [82] [159] The emissions from the fires were more than double Canada's planned emissions reductions from 2020–2030. [160]
Drought can be initiated and prolonged in a number of ways. Processes which reduce precipitation include large-scale circulation anomalies, lack of moisture advected into a region, reduction of local moisture supplies, the production of virga (with precipitation not reaching the ground), and the possible role of aerosols in a dusty environment.