Frazil ice is a collection of loose, randomly oriented ice crystals a millimeter and sub-millimeter in size, with various shapes, e.g., elliptical disks, dendrites, needles and of an irregular nature.

Dec 23, 2023 · Frazil ice is a cold-weather phenomenon. It takes an area of water, a clear and cold night and then some wind to create water turbulence. It can form in rivers, lakes, reservoirs and oceans.

Dec 20, 2024 · According to weather experts in Ontario, frazil ice is a kind of slush ice. It forms when cold air temperatures and wind chill combine to cause surface water temperature to be cooled below the...

Jan 25, 2018 · This is frazil ice, which forms when mist (for example, from a waterfall) freezes, then floats down the creek. When can I see Frazil Ice? Frazil ice can occur in fall, winter, or spring, as long as there is relatively high flow over waterfalls and Yosemite Valley has overnight lows below freezing.

Sep 1, 2021 · Frazil ice typically consists of individual sub-mm to mm-sized particles that may appear like a coarse slush as it is sieved out of the water (Fig. 1), or, under careful observation, most commmonly in the form of disks, but also as needles, hexagons and a …

Dec 9, 2020 · What is Frazil Ice? The frozen phenomenon of frazil ice happens when ice crystals collect in supercooled, turbulent water. In Yosemite National Park, it’s also a byproduct of frozen waterfall mist that reaches places like the Merced River.

Mar 10, 2022 · At Yosemite National Park, located east of San Francisco, California, the unique phenomenon known as frazil ice proves itself just as perilous, though its unusual nature ironically makes it something of a tourist attraction, too.

Dec 15, 2014 · What the Heck is Frazil Ice? This cold-weather phenomenon requires a particular set of variables: a clear night, a slight offshore wind and plunging temperatures. Learn why it can mean disaster for water system intakes.

Nov 20, 2024 · Take control of your data. Here's how this particular type of ice forms.

Frazil is almost always the first ice formation in rivers. The particles are typically about 1 millimetre (0.04 inch) or smaller in size and usually in the shape of thin disks. Frazil appears in several types of initial ice formation: thin, sheetlike formations…