page_title: Boundary Waters–Canadian derecho
section_title: Minnesota
hierarchical_section_title: Boundary Waters–Canadian derecho / Storm path / Minnesota
caption_attribution_description: English: Some of the millions of trees that were blown down in the Boundary Waters on July 4, 1999.
context_page_description: The Boundary Waters–Canadian Derecho was an international derecho that occurred during the afternoon and evening hours of July 4 and the early morning hours of July 5, 1999. It traveled 1,300 miles and lasted 22 hours.
context_section_description: The derecho moved into Minnesota and caused massive damage in Cass, Itasca, and Aitkin Counties, at around $3 million. A semi-trailer truck was blown over on U.S. Route 53 near Canyon.
  One person was killed and 60 were injured as the derecho passed through the Boundary Waters Canoe Area Wilderness (BWCAW) and Superior National Forest. People were there to enjoy canoeing and other recreation for the Independence Day weekend. Straight line winds in excess of 90 mph (145 km/h) uprooted and snapped off trees in over 370,000 acres (1,500 km²) of the 1 million acre (4,000 km²) wilderness area. In total, more than 477,000 acres (1,930 km²) of forest was affected in the Superior National Forest in a swath 30 miles (48.3 km) long and 4 to 12 miles (6.4 to 19.3 km) wide. It is estimated that 25 million trees were blown down in the BWCAW.
caption: Damage to trees in the BWCAW
exif: {}