1. worldpopulationreview.com

    According to the Federal Highway Administration, the maximum frost depth ranges between zero to eight feet in the contiguous United States. Generally, the coldest U.S. states have the deepest frost lines. Alaska's is the deepest at 100 inches, followed by Minnesota with 80 and North Dakota with 75.
  2. datapandas.org

    The coldest states, including Alaska, Minnesota, and North Dakota, have the deepest frost lines amongst all states. For instance, Alaska leads with an impressive 100-inch frost line depth, followed by Minnesota at 80 inches and North Dakota at 75 inches. Conversely, states with traditionally warmer climates tend to have shallower frost lines.
  3. Frost depth data download: Historical frost depth data (2004-2024): click here to download zipped .csv ... US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service North Central River Forecast Center 1733 Lake Drive West Chanhassen, MN 55317-8581
  4. nimblefreelancer.com

    The most excellent frost depth measured ranged from zero to eight feet for the contiguous United States. ... It is expected to assume that the coldest states have the maximum or deepest frost lines. These states include Alaska; this one has an astounding frost line of 100 inches. At the same time, it is general for the hot and humid U.S. states ...
  5. en.wikipedia.org

    The maximum frost depth observed in the contiguous United States ranges from 0 to 8 feet (2.4 m). [1] Below that depth, the temperature varies, but is always above 0 °C (32 °F). Alternatively, in Arctic and Antarctic locations the freezing depth is so deep that it becomes year-round permafrost, and the term "thaw depth" is used
  6. dnr.state.mn.us

    Frost depth across the state varies across the state in February 2025, but is generally the deepest frost since 2019. The map on the right depicts the depth that the ground is frozen under sod across the state. The frost depth is measured by a simple instrument called a frost tube. The liquid freezes in the tube as the ground becomes colder.
  7. charlesandhudson.com

    This map is from the National Snow and Ice Data center and shows the frost line map across the United States. Note how it moves down from 72-inch depth to a 6-inch depth. The maximum frost line depth is 100-inches as seen near the tip of Minnesota, North Dakota, and Alaska, all the way to zero inches in Florida, southern Arizona, and southern ...
  8. weathermonths.com

    Dec 9, 2024Alaska experiences winters, leading to the deepest frost line in the United States at 100 inches (254 centimeters). The maximum frost depth in the United States is 8 feet (96 inches) or 2.4 meters (94.5 inches). Frost line maps created by government agencies show expected frost depths for areas. These maps help determine safe burial depths for ...
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