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National Snow Fall Classifications

National Snowfall Zone Map

Class 3 Area Extreme Snow Accumulation

  • Annual snowfall greater than 100”
  • Greater than 15” snow on roof most of the winter
  • New England Resort Areas
  • Mountain areas, El. 6,000’+: High Sierras, Cascades, Colorado Rockies, Utah, Sun Valley, Big Sky, Jackson Hole Ski Areas
  • Mountain areas: B.C., Northern Idaho, Northern Montana Ski Areas, Canadian Rockies
  • Lake Effect Snow Areas: Northern Michigan, Northern Ohio, Upstate New York

Product Catagories for Class 3

  • AWA IceBreaker Heated Gutter Guards
  • IceArmour Eave 1&2
  • IceArmour All Purpose
  • IceArmour Valley Panels

Class 2 Area Moderate Snow Accumulation

  • Annual snowfall less than 140”
  • Typical snow accumulations of less than 36” on roof for most of the winter
  • Typical areas: Upper Midwest to East Coast, Western U.S. high plains and high deserts, Eastern Wyoming and Eastern Colorado to Wisconsin, Illinois to Massachusetts

Product Catagories for Class 2

  • AWA IceBreaker Heated Gutter Guards
  • IceArmour Eave 1
  • IceArmour All Purpose
  • IceArmour Valley Panels

Class 1 Area Mild Snow Accumulation

  • Annual snowfall less than 30”
  • Typical snow accumulations of up to 6” on roof for most of the winter

Product Catagories for Class 1

  • AWA IceBreaker Heated Gutter Guards
  • IceArmour Eave 1
  • IceArmour All Purpose
  • IceArmour Valley Panels