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Although snow covers Crater Lake National Park for eight months of the year (average annual snowfall is 463 inches (1,180 cm)), the lake rarely freezes over due, in part, to a relatively mild onshore flow from the Pacific Ocean. The last recorded year in which the lake froze over was in 1949, a very long, cold winter.
Crater Lake actually started as a mountain, Mount Mazama. A volcanic eruption roughly 7,700 years ago caused the mountain to collapse inward over time, forming a volcanic crater, the park says.
Crater Lake Institute Director and limnologist Owen Hoffman states that "Crater Lake is the deepest, when compared on the basis of average depth among lakes whose basins are entirely above sea level. The average depths of Lakes Baikal and Tanganyika are deeper than Crater Lake; however, both have basins that extend below sea level." [20] [22]
Little Crater Lake is considered an oddity, with earlier geologists theorizing it formed from a collapsed lava tube because of its steep and overhanging walls. [2] Later geologists believe it originated from a volcanic maar [3] or was created from block faulting. [4] Artesian water from an underground spring fills the resulting depression with ...
Editor's Note: This page is a summary of news on the bitter cold and snow for Monday, Dec. 2. For the latest news, view our story for Tuesday, Dec. 3. Pounding snow and bitter cold continued their ...
And frigid winds over the near-record warm Great Lakes will usher in the first major lake-effect snow event of the season. More than 6 million people under winter weather alerts could see 6 to 12 ...
Despite the arid climate, there is a permanent crater lake about 100 m (330 ft) in diameter at an elevation of 6,480 metres (21,260 ft)-6,500 metres (21,300 ft) within the summit crater and east of the main summit. This is the highest lake of any kind in the world. Owing to its altitude and the desiccated climate, the mountain lacks vegetation.
High temperatures on Tuesday will trend into the 20s and 30s F across the Great Lakes, Ohio Valley and New England. The pattern of lake-effect snow showers is set to persist through Tuesday ...