Thousands of visitors evacuated a remote Minnesota wilderness this week, accessible only by boat, as wildfires spread dense smoke across the U.S. Midwest and Northeast. Over 100 wildfires are active in Canada, with winds carrying smoke southeast. Warnings of unhealthy air conditions on Wednesday stretched from Minnesota through Toronto and into New York. This coincided with expected unusually hot summer temperatures.
Meteorologist Tyler Hasenstein from the National Weather Service in Chanhassen, Minnesota, advised staying indoors to avoid smoke and extreme heat. “Those two things coinciding with each other is not good from a health perspective,” he stated.
Rangers have been working to evacuate thousands of campers from the Boundary Waters Canoe Area Wilderness in northeastern Minnesota. This area, closed since Tuesday, is affected by approximately 17 wildfires ignited by lightning over a week ago. Rangers estimated 6,000 to 10,000 people were within the 1.1 million-acre wilderness.
Joy VanDrie, spokesperson for the Superior National Forest, noted the task is challenging since the wilderness is primarily accessible by canoe. No injuries or fatalities have been reported, and rangers have succeeded in evacuating roughly 90% of those affected by Wednesday.
Campers recounted skies darkening from smoke and feeling heat as they paddled or were escorted to safety. Jan Bailey, alongside family and pets, observed smoke and rapidly advancing fires before being rescued after contacting forestry rangers.
Even the Canadian Air Force aided, assisting youth campers who had crossed the border. Minnesota Gov. Tim Walz noted one group was stranded on an isolated sandbar.
Authorities are uncertain about when the area will reopen. Some fires in the Boundary Waters will burn indefinitely under observation.
Wildfire and Drought Conditions
Severe drought paired with heat has intensified wildfire activity. Dan Westervelt from Columbia University’s Climate School acknowledged conditions in Canada and the U.S. as conducive to fires.
Research links warmer temperatures, due to burning fossil fuels, to increased fire frequency and intensity. Fine particulate matter from smoke poses health risks, especially to sensitive groups.
Experts recommend wearing N95 masks if outdoors and keeping indoor air clean by closing windows and using air purifiers.
This season has been notably active and deadly, with around 48 large fires burning across 15 states, as per the National Interagency Fire Center. More than 16,800 firefighters are deployed, and fires have consumed over 5,678 square miles, surpassing the combined size of Yellowstone and Grand Canyon national parks.
Ongoing Fire Threats and Air Quality Concerns
In Minnesota, officials warn that large fires may persist for months. Minneapolis expected a high of 96 degrees F on Wednesday, with temperatures above 90 F continuing through the week. Patty Thielen from the Minnesota Department of Natural Resources remarked, “It could well be we’re having significant fires throughout the summer until we have snow. Snow would be a good thing.”
Michigan and Wisconsin residents were cautioned about prolonged air quality issues lasting days. Reports of discolored skies extended to Maine. By midday Thursday, smoke may reach as far south as Washington, D.C.
The Associated Press contributed to this report, supported by the Walton Family Foundation for water and environmental policy coverage. Full environmental coverage is available on AP News.