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Glaciers remain year-round on some Cascade peaks higher than 7,000 feet (2,100 m) above sea level. [3] Annual snowfall along the coastal plain averages 1 to 3 inches (2.5 to 7.6 cm) a year, including years with none. Further inland, between the Coast Range and the Cascades, snowfall generally averages from 5 to 10 inches (13 to 25 cm) a year.
Lake Helen at Mount Lassen [10] and Kalmia Lake in the Trinity Alps are estimated to receive 600-700 inches of snow per year. Tamarack in Calaveras County holds the record for the deepest snowfall on earth (884 inches (2,250 cm)). 5. Alaska: Valdez: 314.1 inches (798 cm) 95 feet (29 m)
The 10.8 inches of accumulation on Wednesday is nearly double the city's historical average snowfall for the entire winter, which is 6.1 inches. The one-day snowfall in Portland is higher than the ...
Over the contiguous United States, total annual precipitation increased at an average rate of 6.1 percent per century since 1900, with the greatest increases within the East North Central climate region (11.6 percent per century) and the South (11.1 percent). Hawaii was the only region to show a decrease (−9.25 percent). [89]
NOAA map shows when the average coldest day of the year typically occurs in the United States: From the Northern Plains to the Midwest, Southeast and Northeast, the last two weeks of January are ...
The 6.1 in (15 cm) of snowfall in Portland, Oregon on February 12 ties the airport monthly record of 6.1 in (15 cm) set Feb 19, 1993. [106] The event proved to be historic for the Portland metropolitan area in the month of February. Some areas in Oregon saw up to 1.5 in (38 mm) of ice accretion. [107]
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