Does Lake-effect snow occur around other areas besides the Great Lakes?
Worldwide some locations that get substantial lake-effect snows include Japan, the Korean Peninsula, Scandinavia off the Gulf of Bothnia and the Gulf of Finland, and Canada when cold air passes across Hudson Bay, the Gulf of St.
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In the U.S. lake effect snow commonly occurs across northern Wisconsin, western Michigan, northwestern New York, northwestern Pennsylvania and the Great Salt Lake in Utah.
The vapor then freezes and is deposited on the leeward (downwind) shores. A cold northwesterly to westerly wind over all the Great Lakes created the lake-effect snowfall of January 10, 2022. The same effect also occurs over bodies of saline water, when it is termed ocean-effect or bay-effect snow.
Lake-effect snow is a frequent contributor to our seasonal snowfall in Chicago and with Lake Michigan almost ice free, the lake-effect snow machine is open for business provided a cold wind is blowing in our favor in the right direction. Nearly 93% of the Great Lakes does not have significant ice cover.
Why do lake-effect snows not develop on the northern side of the great lakes when strong southerly winds are blowing during winter? -Southerly winds would be bringing warm air across the lake. This would decrease the lake-air temperature difference, which is necessary for lake-effect snow.
Lake-effect snow can form on small lakes just as it does in the Great Lakes. Salt Lake City, Fort Worth and Carson City, Nevada have all had bouts of snow from lakes. Inland lake-effect and ocean-effect doesn't just occur in the United States.
Lake-effect snow generally doesn't fall over the water because it needs the friction and topography of the land to bring out the snow. Winds usually blow west to east in the Northern Hemisphere, so the lake-enhanced snow is pushed to the eastern side of the Great Lakes, Miller said.
All that water picked up from the lake normally travels no further than about 25 miles away before falling, but it can sometimes travel as far as 100 miles away! That moisture can make for a whole lot of snow. Luckily for people living near large lakes, lake effect snow generally slows down around February.