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     • Hoar frost is a type of feathery frost that forms as a result of specific climatic conditions. The word ‘hoar’ comes from old English and refers to the old age appearance of the frost: the way the ice crystals form makes it look like white hair or a beard.
     www.woodlandtrust.org.uk/blog/2019/02/what-is-hoar-frost/

     What is Hoar Frost and How Does it Form? - Woodland Trust

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   Why is hoar frost called Hoar ice?

   • Hoar frost is named after its hair-like appearance. The size of the frost that forms depends on how much water vapour is available to ‘feed’ the ice crystals as they grow. Hoar frost has a distinctive appearance as it forms hair-like or feathery structures as it grows.

   What is Hoar Frost and How Does it Form? - Woodland Trust

   www.woodlandtrust.org.uk/blog/2019/02/what-is-hoar-frost/

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   How does hoar frost form?

   • Hoar frost requires slightly different conditions. It forms when the water vapour in the air comes into contact with solid surfaces that are already below freezing point. Ice crystals form immediately, and the ice continues to grow as more water vapour is frozen.

   What is Hoar Frost and How Does it Form? - Woodland Trust

   www.woodlandtrust.org.uk/blog/2019/02/what-is-hoar-frost/

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   What does hoar frost look like?

   • Hoar frost is a type of feathery frost that forms as a result of specific climatic conditions. The word ‘hoar’ comes from old English and refers to the old age appearance of the frost: the way the ice crystals form makes it look like white hair or a beard. How does hoar frost form?

   What is Hoar Frost and How Does it Form? - Woodland Trust

   www.woodlandtrust.org.uk/blog/2019/02/what-is-hoar-frost/

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   What is hoar frost?

   • According to the National Weather Service, hoar frost is defined as a "deposit of interlocking crystals formed by direct sublimation on objects, usually those of small diameter freely exposed to air, such as tree branches, plants, wires, poles, etc."

   What's the difference between Rime Ice and Hoar Frost?

   www.wisfarmer.com/story/news/2021/01/05/whats-difference-between-rime-ice-and-hoar-frost/6553534002/

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   When does frost & hoarfrost form?

   • Frost and hoarfrost can only form when the air and objects are at or below freezing. However, while frost may form when the air is relatively dry, the air must be quite moist for hoarfrost to form.

   What is hoarfrost? - AccuWeather

   www.accuweather.com/en/weather-news/what-is-hoarfrost/7092

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   What is the difference between Hoarfrost and rime ice?

   • Similar in appearance to hoarfrost is rime ice, or rime, but there is a fundamental difference. While hoarfrost forms directly on objects as ice crystals, rime forms when tiny, near-freezing water droplets, usually from thick fog and other clouds, attach to the surface of a below-freezing object and turn into ice immediately on contact.

   What is hoarfrost? - AccuWeather

   www.accuweather.com/en/weather-news/what-is-hoarfrost/7092

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3. www.cbc.ca › news › canadaHere's why you need to know the difference between hoarfrost ...

   www.cbc.ca › news › canada

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   Feb 11, 2020 · When ice forms on a tree, it can make the perfect snap to post to Instagram or Facebook. There may be a tendency to simply call it hoarfrost, which for a social media posting probably doesn’t ...

4. www.accuweather.com › en › weather-newsWhat is hoarfrost? - AccuWeather

   www.accuweather.com › en › weather-news

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   Hoarfrost can create dramatic and stunning scenes as ice needles form on objects in the wintertime, but what exactly is it and how does it form?

5. Videos

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     1:15

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     What is Hoar Frost?

     Jan 31, 2013

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     What is hoarfrost?

     Jan 7, 2019

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     3:14

     cbc.ca

     Rime ice vs. Hoarfrost: Can you spot the difference?

     Feb 11, 2020

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6. www.woodlandtrust.org.uk › 02 › what-is-hoar-frostWhat is Hoar Frost and How Does it Form? - Woodland Trust

   www.woodlandtrust.org.uk › 02 › what-is-hoar-frost

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   Feb 21, 2019 · Hoar frost is a type of feathery frost that forms as a result of specific climatic conditions. The word ‘hoar’ comes from old English and refers to the old age appearance of the frost: the way the ice crystals form makes it look like white hair or a beard.

7. www.wisfarmer.com › story › newsWhat's the difference between Rime Ice and Hoar Frost?

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   Jan 5, 2021 · The development of hoar frost typically occurs on relatively clear nights when air with a dewpoint below 32° is brought to saturation by cooling. Hoar frost also needs calm air that allows those complex lacy deposits of crystals to form.

   • Occupation: Editor

8. www.britannica.com › science › hoarfrostHoarfrost | Formation, Deposition, Sublimation | Britannica

   www.britannica.com › science › hoarfrost

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   Hoarfrost, deposit of ice crystals on objects exposed to the free air, such as grass blades, tree branches, or leaves. It is formed by direct condensation of water vapour to ice at temperatures below freezing and occurs when air is brought to its frost point by cooling.

   • Author: The Editors of Encyclopaedia Britannica

9. www.king5.com › article › weatherWhat is 'hoar' frost, and where does the name come from?

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   Feb 16, 2013 · What is 'hoar' frost, and where does the name come from? The word 'hoar' comes from what's called old 'high' German...and it means either gray or magnificent. One reference compares...

10. weather.com › science › weather-explainersHoarfrost: The Science Behind Frost on Steroids

    weather.com › science › weather-explainers

    Oct 20, 2015 · No, this frost isn't on performance-enhancing drugs. What you see in the photos above is called hoarfrost. The first photo shows an early-season example of hoarfrost from Oct. 19,...