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 Post subject: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Mon Oct 29, 2012 10:24 pm 
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An article from Weather Underground to get your deep-snow stoke on... Great photos in the online version here:
http://www.wunderground.com/blog/weatherhistorian/comment.html?entrynum=60

Where does the Deepest Snow on Earth Accumulate?

As the warm and relatively snowless winter of 2011-2012 progresses in the contiguous United States (I write this as a big snowstorm develops in the west-central plains!), some other parts of the world have been experiencing some extraordinary snowfalls, specifically in Alaska and Europe. So, I thought I’d take a look at what the greatest depths of snow on record might be.

Snowiest Places in the World

NORTH AMERICA

It is likely that probably the snowiest regions in the world are in the coastal mountains of British Columbia and southern Alaska above the 3,000 foot level. Unfortunately, there are no weather sites to make measurements in these areas. The Thompson Pass location in Alaska (mentioned below) is indicative of how much snow probably falls in such locations. The Thompson Pass site is no longer making observations. What we do have records for in North America are noted below.

The snowiest place we have measurements from (historically-speaking) in North America are the two sites in the mountains of western Washington (both situated around 5,000-6,000 feet) on the slopes of Mt. Rainier and Mt. Baker. At both places world records have been established for greatest annual snowfall:

Greatest seasonal snowfall: 1,140” at Mount Baker Ski Resort 1998-1999

Greatest 12-month snowfall: 1,224.5” at Paradise Rainier Ranger Station between Feb. 19, 1971 and Feb. 18, 1972

The greatest depth achieved at either location was 367” at Paradise R.S. on March 10, 1956.

However, it is in the Sierra of California that even greater depths of snow have been achieved, specifically at Tamarack, a site located at 7000’ near where the Bear Valley Ski Resort is now in the central Sierra. In March 1911 the snow depth reached an amazing 451” (37.5 feet!), the greatest snow depth ever measured anywhere in North America (but not the world!). A seasonal total of 884” fell at Tamarack during 1906-1907, a Sierra and thus California record.

Other North American sites recording phenomenal seasonal snowfalls and depths include:

974.1” Thompson Pass, Alaska (just north of Valdez) in 1952-1953. Maximum depth unknown, the Alaska state record for such is 345” at White Mountain March 1, 1942.

963” Mt. Copeland (near Revelstoke), British Columbia, Canada in 1971-1972. Maximum depth unknown.

903” Crater Lake, Oregon in 1949-1950. Maximum depth 252” on April 3, 1983.

846.8” Alta, Utah (in the Wasatch Mountains) in 1982-1983. Maximum depth 179” on April 7, 1958.

837.5” Wolf Creek Pass, Colorado (in the San Juan Mountains) in 1978-1979. Maximum depth 251” on March 31, 1979.

Valdez, Alaska is the snowiest sea-level town in the world with an average of 320” falling each season. This winter has been one of its busiest with 104.9” this past January alone (reaching a maximum depth of 84” on January 12th). So far this season 339.1” has already (as of Feb. 3) accumulated at Valdez.

The port of Valdez on Alaska’s south-central coastline is the snowiest sea-level town in the world with an average of 320” of snowfall per season. Photo by Don Pitcher.

Here is a list of the 10 snowiest locations in the U.S. by annual average snowfall (various periods of record):

680” Paradise Rainier Ranger Station, Washington
552” Thompson Pass, Alaska
530” Mt. Baker Lodge, Washington
530” Crater Lake, Oregon
516” Alta, Utah
471” Soda Springs, California
445” Tamarack, California
442” Stampede Pass, Washington
436” Wolf Creek Pass, Colorado
429” Silver Lake Brighton, Utah

JAPAN

Impressive as the depths recorded in North America might seem, the deepest snow on earth accumulates in the Japanese Alps of Honshu Island around the 2,000-6,000’ level. The average annual snowfall is estimated to be in the 1200-1500” range (see The Climate of Japan by E. Fukui p. 171). On Feb. 14, 1927 a snow depth of 465.4” was measured on Mt. Ibuki at 5,000 feet. In fact, these amazing snow depths are a singular tourist attraction since a highway that transects the mountains is kept open all winter. It is known as the Yuki-no-Otani Snow Canyon.

A roadside and topside view of the famous Yuki-no-Otani Snow Canyon in the Japanese Alps of Honshu Island. The greatest snow depths ever measured on earth are in this region. Photos from buzzhunt.com, photographer(s) unknown.

Even low-level (in fact sea level) locations on the west coast of Honshu have recorded incredible snowfall and snow depths. Only Valdez, Alaska is snowier in this regard. Tsukayama recorded 68.2” of snow in 24 hours on December 30-31, 1960, a world record for a low elevation site. The snow depths are so extreme in the towns of this region that warm-water sprinklers are imbedded in the streets to melt the snow.

Snowfall in the towns along the Sea of Japan in Niigata Prefecture are so deep that artificial snow-melting systems must be employed. These warm-water sprinklers, which run down the middle of a street in Imokawa, keep the community functioning during the winter. Photo by M. Ishii.

EUROPE

The Alps of Europe above the 6,000-foot level also have recorded exceptional snow depths. Santis, Switzerland (elevation 8,200’) reported a snow depth of 325” in April 1999 following one of Europe’s snowiest winters. A world record point snowfall of 67.8” once fell in just 19 hours at Bessans in the French Alp region of Savoie on April 5-6, 1959. This winter has seen some very impressive snowfall in the Alps and on January 24th (last month) a depth of 226” was reported at the ski resort St. Anton Am Arlberg in Austria at the 2,800-meter (9,240-foot) level. Perhaps the deepest snow on record for the Balkans has fallen just this past week in Serbia where depths of up to 78” have been reported.

Curiously, one of the snowiest places in the world is in the Western Great Caucus Mountains of Russia near Turkey and the Black Sea. This is the region where the winter Olympics will next be held. Achishko (elevation 6,200’) has measured snow depths as high as 315”. Snow depths in the Swedish and Norwegian mountains reach up to 20 feet during particularly snowy winters.

The deepest undrifted snow reliably measured at a low level site in the U.K. was 83" at Forest-in-Teesdale in northeast England on March 14, 1947. The site rests at an elevation of 1305 feet and much deeper snow depths have been seen at mountain top sites like Ben Nevis (4406').

OTHER SNOWY PLACES

Prodigious snowfalls occur in high mountain areas all over the world, but by and large these places are uninhabited. Particularly snowy mountains include the Alps of the South Island of New Zealand above 3,000 to 4,000 feet. The southern tip of the Andes near Tierra del Fuego and Patagonia, in Chile and Argentina, experiences tremendous snow accumulations above the 3,000- to 4,000-foot level as do the southern flanks of the high Himalayas east of the 80° longitude.

Surprisingly, the arctic and Antarctic receive very small amounts of snowfall due to lack of atmospheric moisture. It is estimated, in fact, that the South Pole is one of the driest places on earth. It is impossible to actually measure precipitation here because of the high winds, but less than one-tenth of an inch of precipitation (just one or two inches of snow) probably falls on an annual basis.

P.S. For metric conversions please note that 1” is about 2.5 cm and one meter about 3.3 feet.

Christopher C. Burt
Weather Historian

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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Mon Oct 29, 2012 10:40 pm 
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Dayum.
Japan is now first on the list for me. Wifey studied there in college, I could possibly appeal to her nostalgia....

HmmmN....

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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Tue Oct 30, 2012 12:54 am 
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Nice article. Those pictures from Japan are crazy.

It's hard to judge snow depth based on snowfall without looking at other factors like wind. Thompson Pass loses a lot of snow that way, especially earlier in the season.

Here's a pretty good story from last year's crazy snow, btw, with a video at the end that I cannot for the life of me figure out how to embed: http://www.adn.com/2012/01/14/2264389/v ... class.html


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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Tue Oct 30, 2012 1:33 am 
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Location: Torino, Western Alps
The snowiest areas in the world are those overlooking the Pacific with the disposal of the current west-east. So the whole coast Canadian and American closer to the ocean ... but at the same latitude as there is a snowy place: Japan. Here the persistence of a low pressure area to the north of Hokkaido pantry heavy snowfalls that exceed several meters to sea level at the same latitude as San Francisco or Tunis. All thanks to the Siberian cold tank that is charged with humidity in the Sea of ​​Japan. :headbang:

Here in Italy, although it is known as the land of the sun, we have some snow record: the intensity as more snow in one day, in December 1961, fell to 340 cm (133 inc) of snow in Abruzzo.
In March 1971 the Lake Valsoera 2350m (7700ft), western Italian Alps, the snowpack was 15.5 meters (50 ft) causing serious problems for the local population
Even in the extraordinary 2008/2009 season, the snowpack exceeded the 5m thick at 1500m (4900ft) in different locations of the Italian Alps :headbang:

here is an example of that years...

Image

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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Tue Oct 30, 2012 9:23 am 
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I am really starting to like this thread...


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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Tue Oct 30, 2012 9:36 am 
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Is it wrong to be sportin wood :scratch: :thatrocks:

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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Tue Oct 30, 2012 9:42 am 
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If only it snowed on kauai :cry:


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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Tue Oct 30, 2012 10:34 am 
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I'm liking where the Tahoe stands in all of this. Honestly, two seasons ago when the crest got hammered with over 800", it was getting pretty ridiculous. Yeah, it was cool that some new lines came into play, but in some spots even terrain that would normally be cliffy and rocky became mellow, wide open cruisers. Lotsa features that you could usually play on were buried (as were some houses). Of course, given the alternative (last season), I'll take it every year.
I would have loved to have seen Wolf Creek during their monster season, though that much snow there is probably not very rideable on a board - I've been there several times wishing I had a paddle to help me get down the mountain.

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 Post subject: Re: Where does the Deepest Snow on Earth Accumulate?
PostPosted: Wed Oct 31, 2012 1:00 pm 
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Baker has been my home mountain for a long time now and the nature of the mountain is completely different in the spring than it is in the early winter. We have the same issue with fun features disappearing and new lines coming in that can't normally be ridden. Everything I've seen is calling for a warmer and drier year this year than last but as long as we don't get another winter like 2005 I'll be happy. Even if we do that just means less time in the ski area and more time up high.

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