The 2006 British Columbia Flood was a series of events that occurred within the period of about one month. After a few heavy dumpings of snow in Northern British Columbia, in places like Smithers and Burns lake, and a very long dry spell that left the resevoirs of the towns Toffino, Abottsford, and Mission dry, another trend started and low pressure systems started coming in. The drought of low resevoirs was caused after two to three months without rain. When the drought ended, an Alutien low located just south of Alaska formed, and brought in systems of low pressure fron the Central Pacific through the pineapple express. One system after another dumped up to 10 cm (4 in) of rain from each low. Sewers were clogged up with leaves and roads became rivers. Some areas near Vancouver and Vancouver Island saw more than a month's worth of rain from just one system. At higher altitudes, some areas near Whistler saw up to 90 cm (3 ft) of snow. There were thousands of people living without power, and hurricane-force gusts occurred in some areas. There were also mudslides in areas like Hope and Chilliwack. One of the systems that hit in the area even brought the remnants of a subtropical storm/Arctic invest. During one of the storms, there was a tsunami alert issued, although any tsunami that did wash up in British Columbia was too small to be noticed through the storms, rain, thunder, wind, and rough seas. The storm caused silt deposits to fall into one of Vancouver's resevoirs. This prompted British Columbia to issue a boil water advisory for more than a million people. The advisory lasted more than a week.