Cities in the Pacific Northwest of North America reported power outages Tuesday, both from failures of utility companies and rolling blackouts due to heavy power demand. Seattle and Portland temperatures were expected to fall Tuesday, below Monday's record highs, but inland, the city of Spokane, Washington, continued to record high temperatures and experience rolling blackouts in the city. Lytton, British Columbia, set Canada's all-time high temperature Sunday with 46.6 degrees Celsius, only to see it broken less than 24 hours later, hitting 47.9 C Monday. Officials said Tuesday that several deaths in Portland and Seattle were tied to the extreme heat. In Vancouver, British Columbia, first responders have said that as many as two dozen deaths may be attributed to the high temperatures. On Tuesday, the U.N. World Meteorological Organization called the heat wave hitting the Pacific Northwest corner of the United States "exceptional and dangerous" and says it could last at least another five days.Guests at Sunriver resort near…