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🥾 | Snowy mountains over the height in a residential area Heavy snowfall continues Hokkaido The number one snowfall in the history of observation

In the residential area, there is a snowy mountain that exceeds the height.

Snowy mountains that exceed the height in a residential area Heavy snowfall continues Hokkaido The number one snowfall in the history of observation

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The amount of snow in Sapporo reached 5 cm by 11:45 am on the XNUMXth.

In Tomakomai City, Hokkaido, it has been snowing since dawn on the XNUMXth, and the amount of snowfall has reached XNUMX cm, which is about five times the normal amount.city… → Continue reading

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This is a news account of STV Sapporo Television Broadcasting (Nippon Television Network System, NNN).
Incidents and accidents, natural disasters, political economy, living information, etc ... We will deliver the latest news of Hokkaido.

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    Snowfall(Sekisetsu) is piled up on the groundsnowThat thing.Meteorological terms include snow or(I.e.The state where (hail) covers more than half of the ground.


    Basically, the amount of snow does not decrease until the snow melts,Sublimation,WindMay be reduced by being blown away.Since the announced value is the value at the snow gauge installation point, it may be in the same area.SnowdriftIn some cases, the amount of snowfall may exceed the announced amount.

    The condition is different between "0 cm of snow" and "no snow".Japanese Meteorological AgencyAccording to the definition of, "snow cover 0 cm" is a state in which more than half of the ground around the observation point is covered with snow or hail. "No snow" means that there is no snow or hail, or that half of the ground around the observation point is not covered with snow or hail.

    The depth of snowSnowfallOrSnow depthGood,News,Eur-lex.europa.eu eur-lex.europa.euThe "snow cover ~ cm" that flows inSnow coverIt is a snow cover record at the installation point.Maximum amount of snow cover within a certain periodDeepest snowIt is called (Saitamaken Shinsetsu).They areSnowfallPlease note that it is different from.The amount of snow and the weight of snow depth per unit areaSnow weight,Snow loadIt is called "kg / m2" or "kN / m2" and is measured by a snow weight scale.Building Standard Law Enforcement OrdinanceArticle 86 and others have provisions regarding snow load.

    According to the definition of the Japan Meteorological Agency, it is solid.precipitationWhat is accumulated is snow, but in the summer(I.e.,(I.e.When is piled up, it is not called snow.

    Even in snowy areas, in colder areas, the snow melts slowly or hardly melts, and the accumulation of snow progresses.In Japan, the Japan Meteorological Agency states that "snow cover has continued for 30 days or more"Deep snowIs defined as.In colder regions, the period of heavy snowfall may be longer than summer and last for more than a year.Especially in polar regions and high mountains, this condition has continued for many years.IcecapAnd it can be compressedGlacierTo form.

    Snow cover is just snow piled up (noun, not verb), and the expression "snow cover" used in some parts isMisuse.

    Classification of snow cover

    The Japanese Society of Snow and Ice classifies snow cover into the following nine types according to snow quality.[1].

    • Fresh snow-The crystal shape that remains almost completely during snowfall.
    • Komari Snow-Almost rounded ice grains with only a few dendritic crystals remaining.Small snow.
    • Tightened snow-A grain of ice that is rounded by compression or sintering.The particles are loosely connected by a mesh-like structure.Tight snow.
    • Rough Snow-A grain of ice that has become coarser due to the action of water.Some contain water on the inside and surface, and some are re-frozen.Coarse snow.
    • Koshimo Rough Snow-Small ice particles that have become flat due to melting of fresh snow and adhesion of frost.Small frost coarse snow.
    • Shimozarame Snow-Frost that grows around fresh snow is enlarged and turned into skeleton-shaped ice grains.Frost coarse snow.
    • Ice plate-Plate-shaped and layered ice.
    • Surface frost-Frost that develops on the surface of snow layers.
    • Crust-A hard layer formed by refreezing on the surface of a snow layer.

    Record of snow cover



    Normal value of snow cover in major cities

    Normal snow cover in major cities with statistics (Hokkaido, Tohoku, Tokyo)[5]
    (1991-2020, Japan Meteorological Agency, observation points as of 2021)
    city(First snow)First day of snowfallThe first day of snowfallAll day snowSnow cover all day(Last snow)Remarks
    Period from the first day to the whole day of snow cover / snow cover
    ▷ 11/1
    4/30 ◁
    Maximum annual snow depth
    Wakkanai10/1911/1212/34/24/125/10The first snow is the earliest at the point where the observation is being made.
    152 days / 121 days
    Asahikawa10/1911/411/244/74/145/1At the point where observations are being made, the first day of snowfall is the earliest, and the whole day of snowfall is late.
    162 days / 135 days
    Abashiri10/3011/1712/84/14/185/11At the point where the observation is being made, the snowfall is the latest all day and the last snowfall.
    153 days / 115 days
    147 days / 118 days
    Aomori11/811/1912/143/234/14/15The deepest snowfall of the year is the most in the prefectural capitals.
    134 days / 100 days
    Yamagata HijioriNot observed because it is unmanned.Mountainous area on the Sea of ​​Japan side.The deepest snowfall of the year is the most at the points where observations are being made.
    83 days
    Some years do not record snow cover (2007, etc.)

    Snow cover / root snow (long-term snow cover) is 1 cm or more.

    Normal and extreme values ​​of the deepest snowfall

    Normal and extreme values ​​of the deepest snowfall at the meteorological observatory
    (Normal value is 1991-2020, Japan Meteorological Agency)
    Weather stationAverage priceExtreme value (recording date)
    Wakkanai72cm199 cm (February 1970, 2)
    Asahikawa89cm138 cm (February 1987, 3)
    Sapporo97cm169 cm (February 1939, 2)
    Abashiri63cm143 cm (February 2004, 2)
    Kushiro34cm123 cm (February 1939, 3)
    Muroran26cm68 cm (February 1958, 2)
    Hakodate45cm91 cm (February 2012, 2)
    Aomori101cm209 cm (February 1945, 2)
    Akita37cm117 cm (February 1974, 2)
    Morioka36cm81 cm (February 1938, 2)
    Sendai16cm41 cm (February 1936, 2)
    Yamagata51cm113 cm (February 1981, 1)
    Fukushima26cm80 cm (February 1936, 2)
    Mito7cm32 cm (February 1945, 2)
    Utsunomiya9cm32 cm (February 2014, 2)
    Maebashi11cm73 cm (February 2014, 2)
    (I.e.9cm62 cm (February 2014, 2)
    Tokyo6cm46 cm (February 1883, 2)
    Choshi0cm17 cm (February 1936, 3)
    Yokohama7cm45 cm (February 1945, 2)
    Nagano33cm80 cm (February 1946, 12)
    Kofu15cm114 cm (February 2014, 2)
    Shizuoka0cm10 cm (February 1945, 2)
    Nagoya8cm49 cm (February 1945, 12)
    Gifu15cm58 cm (February 1936, 2)
    Tsu4cm26 cm (February 1951, 2)
    Niigata32cm120 cm (February 1961, 1)
    Toyama51cm208 cm (February 1940, 1)
    Kanazawa32cm181 cm (February 1963, 1)
    Fukui48cm213 cm (February 1963, 1)
    Hikone26cm93 cm (February 1918, 1)
    京都7cm41 cm (February 1954, 1)
    Osaka1cm18 cm (February 1907, 2)
    Kobe1cm17 cm (February 1945, 2)
    Nara3cm21 cm (February 1990, 2)
    Wakayama1cm40 cm (February 1883, 2)
    Okayama1cm26 cm (February 1945, 2)
    Hiroshima5cm31 cm (February 1893, 1)
    Matsue20cm100 cm (February 1971, 2)
    Tottori37cm129 cm (February 1947, 2)
    Tokushima1cm42 cm (February 1907, 2)
    Takamatsu1cm19 cm (February 1984, 1)
    Matsuyama0cm34 cm (February 1907, 2)
    Kochi1cm10 cm (February 1987, 1)
    Shimonoseki2cm39 cm (February 1900, 1)
    Fukuoka2cm30 cm (February 1917, 12)
    Oita1cm15 cm (February 1997, 1)
    Nagasaki3cm17 cm (February 2016, 1)
    佐賀3cm21 cm (February 1959, 1)
    Kumamoto1cm13 cm (February 1945, 2)
    Miyazaki0cm3 cm (February 1945, 1)
    Kagoshima3cm29 cm (February 1959, 1)
    Okinawa Prefecture has not observed snowfall


    2016/12/19,Saharaに 位置 す るアルジェリアSnow cover was observed in the sand dunes of the town of Ain Sefra[6]..Snowfall in the Sahara Desert1979/2/18The snow at that time melted in 30 minutes, and the snowfall that remained for nearly a day was the first in the history of observation in December 1.[6]..In addition, with Algeria in December 2016モロッコ Of国境The amount of snow in the vicinityLandsat No. 7It is also confirmed by image analysis of[6].

    Effect of snow cover

    Snow coverBiology In the field of living thingsdistributedIt is known to have a great influence on.In areas where the temperature drops above a certain level, the minimum temperature during the cold season and its organismsCold resistanceHas a great significance as its distribution factor.However, since snow contains a lot of air, the temperature inside the snow may not drop as much as the outside air.For example, the Sea of ​​Japan side has a lot of snow in winter, so at heights below shrubs, organisms in warmer regions are surprisingly distributed to the north.Snow camelliaIs often cited as an example.


    [How to use footnotes]


    1. ^ "Glossary of snow classification”. Japanese Society of Snow and Ice Hokkaido Branch. 2014/2/6Browse.
    2. ^ a b c d e Japan Meteorological Agency Supervised "Weather Yearbook" Prior to 2007 edition, ranking table by meteorological element of Japan, and meteorological records of the world and Japan
    3. ^ Japan Meteorological Agency 1-10 values ​​in the history of observation (year-round values) Deepest snowfall in the month (cm)
    4. ^ a b 18 cm of snow in 256 hours, new record or Italy CNN, February 2015, 3
    5. ^ "Past weather data searchJapan Meteorological Agency, (updated from time to time), viewed April 2021, 9
    6. ^ a b c It snows in the Sahara Desert! Weathernews, February 2017, 2

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