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Lake-effect snow (also ocean-effect snow) – Occurs when relatively cold air flows over warm lake (or ocean) water to cause localized, convective snow bands. [6] [7] Mountain snow – Orographic lift causes moist air to rise upslope on mountains to where freezing temperatures cause orographic snow.
Snow accumulates from a series of snow events, punctuated by freezing and thawing, over areas that are cold enough to retain snow seasonally or perennially. Major snow-prone areas include the Arctic and Antarctic , the Northern Hemisphere, and alpine regions.
This reduces fetch distances. Secondly, the water temperature nears freezing, reducing overall latent heat energy available to produce squalls. To end the production of lake-effect precipitation, a complete freeze is often not necessary. [11] Even when precipitation is not produced, cold air passing over warmer water may produce cloud cover.
Water evaporates from the lakes, ... If the weather is cold enough and the lakes freeze over, less snow falls because the water can't evaporate into the air.
As snow in Minnesota, North Dakota, and South Dakota begins to melt and flow into the Red River, the presence of downstream ice can act as a dam and force upstream water to rise. Colder temperatures downstream can also potentially lead to freezing of water as it flows north, thus augmenting the ice dam problem.
Heavy snow and freezing temperatures are ... which occurs when cold air from Canada gathers moisture over the open waters, creating perfect conditions for a heavy downfall of snow. Blizzard ...
These conditions are considered unusual, [6] restricting it to a process of importance within a few centimeters of a rock's surface and on larger existing water-filled joints in a process called ice wedging. Not all volumetric expansion is caused by the pressure of the freezing water; it can be caused by stresses in water that remains unfrozen.
Anything dissolved in water can have the same effect of lowering the freezing temperature, but salt is used, Ferguson says, because when one unit of salt dissolves, it yields two to three ...