{
  "version": 1,
  "region": "FI1D",
  "months": [
    11,
    12,
    3
  ],
  "years": [
    2011,
    2025
  ],
  "reviewed": "2026-10-06",
  "purpose": "Local snow-trip planning context only; excluded from all scores, ranks and regional weather.",
  "attribution": "Contains modified Finnish Meteorological Institute observation data, 2011–2025; summaries by Bigfoot Wanders.",
  "licence": "CC BY 4.0",
  "licence_url": "https://en.ilmatieteenlaitos.fi/open-data-licence",
  "source_url": "https://en.ilmatieteenlaitos.fi/open-data-manual",
  "definitions_url": "https://www.ilmatieteenlaitos.fi/neuvoja-havaintosuureisiin",
  "method": {
    "minimum_daily_coverage": 0.9,
    "minimum_years": 10,
    "snow_unit": "cm",
    "snow_measure": "Daily morning depth at the station; -1 and 0 are below 1 cm, missing excluded.",
    "summary": "Median and range of yearly observed-day fractions. Not trip probabilities or skiing thresholds.",
    "daylight": "Sunrise to sunset on the 15th at station latitude; standard refraction; excludes twilight and is not sunshine.",
    "limits": "One usable snow station per area; nearby controls lack qualifying snow records. Rural/lowland observations, not town centres or slopes."
  },
  "stations": [
    {
      "fmisid": 101990,
      "name": "Kittilä Pakatti",
      "x": 24.9,
      "y": 67.7,
      "z": 179,
      "started": 2009,
      "ended": null,
      "expandable_description": "Asema sijaitsee Ounasjoen itärannalla noin 1,6 km koilliseen Kittilän taajama-alueesta. Ympäristöltään asema kuuluu Ounasjoen alankoalueeseen, joka on pääosin havumetsää ja aapasuota. Paikoitellen on laajempia havumetsäisiä vaaroja.",
      "decision": "Selected Levi-area snow station: Pakatti, Ounasjoki lowland approximately 16 km south of Levi village; not a resort/slope measurement.",
      "wfs_lat": 67.66924,
      "wfs_lon": 24.92927
    },
    {
      "fmisid": 101933,
      "name": "Rovaniemi Apukka",
      "x": 26,
      "y": 66.6,
      "z": 106,
      "started": 1939,
      "ended": null,
      "expandable_description": null,
      "decision": "Selected Rovaniemi-area snow station: Apukka, rural, approximately 15 km northeast of town; not an urban or ski-slope measurement.",
      "wfs_lat": 66.57944,
      "wfs_lon": 26.01094
    }
  ],
  "observations": [
    {
      "station": "101933",
      "name": "Rovaniemi Apukka",
      "lat": 66.57944,
      "lon": 26.01094,
      "month": 3,
      "period": "month",
      "usable_years": 15,
      "years": [
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020,
        2021,
        2022,
        2023,
        2024,
        2025
      ],
      "missing_snow_days": 0,
      "snow_negative_one_days": 0,
      "snow_zero_days": 0,
      "passes_snow_protocol": true,
      "daylight_midmonth": "11h 32m",
      "snow_ge1": {
        "years": 15,
        "median": 1.0,
        "min": 1.0,
        "max": 1.0
      },
      "snow_ge10": {
        "years": 15,
        "median": 1.0,
        "min": 1.0,
        "max": 1.0
      },
      "depth_median_cm": {
        "years": 15,
        "median": 66.0,
        "min": 44.0,
        "max": 86.0
      },
      "tmax_mean_c": {
        "years": 15,
        "median": 0.16774193548387098,
        "min": -4.3354838709677415,
        "max": 2.4677419354838706
      },
      "tmin_mean_c": {
        "years": 15,
        "median": -11.651612903225807,
        "min": -22.083870967741934,
        "max": -7.693548387096775
      }
    },
    {
      "station": "101933",
      "name": "Rovaniemi Apukka",
      "lat": 66.57944,
      "lon": 26.01094,
      "month": 11,
      "period": "month",
      "usable_years": 15,
      "years": [
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020,
        2021,
        2022,
        2023,
        2024,
        2025
      ],
      "missing_snow_days": 0,
      "snow_negative_one_days": 93,
      "snow_zero_days": 22,
      "passes_snow_protocol": true,
      "daylight_midmonth": "5h 48m",
      "snow_ge1": {
        "years": 15,
        "median": 0.8,
        "min": 0.26666666666666666,
        "max": 1.0
      },
      "snow_ge10": {
        "years": 15,
        "median": 0.5,
        "min": 0.0,
        "max": 1.0
      },
      "depth_median_cm": {
        "years": 15,
        "median": 9.5,
        "min": 0.0,
        "max": 20.0
      },
      "tmax_mean_c": {
        "years": 15,
        "median": -1.0066666666666666,
        "min": -5.203333333333333,
        "max": 2.433333333333333
      },
      "tmin_mean_c": {
        "years": 15,
        "median": -8.026666666666666,
        "min": -14.283333333333331,
        "max": -2.54
      }
    },
    {
      "station": "101933",
      "name": "Rovaniemi Apukka",
      "lat": 66.57944,
      "lon": 26.01094,
      "month": 12,
      "period": "month",
      "usable_years": 14,
      "years": [
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020,
        2021,
        2022,
        2023,
        2024,
        2025
      ],
      "missing_snow_days": 9,
      "snow_negative_one_days": 2,
      "snow_zero_days": 1,
      "passes_snow_protocol": true,
      "daylight_midmonth": "2h 25m",
      "snow_ge1": {
        "years": 14,
        "median": 1.0,
        "min": 1.0,
        "max": 1.0
      },
      "snow_ge10": {
        "years": 14,
        "median": 1.0,
        "min": 0.7419354838709677,
        "max": 1.0
      },
      "depth_median_cm": {
        "years": 14,
        "median": 26.0,
        "min": 15.0,
        "max": 41.0
      },
      "tmax_mean_c": {
        "years": 15,
        "median": -4.141935483870967,
        "min": -10.777419354838711,
        "max": -0.6774193548387096
      },
      "tmin_mean_c": {
        "years": 15,
        "median": -12.961290322580645,
        "min": -17.941935483870967,
        "max": -5.603225806451613
      }
    },
    {
      "station": "101990",
      "name": "Kittilä Pakatti",
      "lat": 67.66924,
      "lon": 24.92927,
      "month": 3,
      "period": "month",
      "usable_years": 15,
      "years": [
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020,
        2021,
        2022,
        2023,
        2024,
        2025
      ],
      "missing_snow_days": 0,
      "snow_negative_one_days": 0,
      "snow_zero_days": 0,
      "passes_snow_protocol": true,
      "daylight_midmonth": "11h 30m",
      "snow_ge1": {
        "years": 15,
        "median": 1.0,
        "min": 1.0,
        "max": 1.0
      },
      "snow_ge10": {
        "years": 15,
        "median": 1.0,
        "min": 1.0,
        "max": 1.0
      },
      "depth_median_cm": {
        "years": 15,
        "median": 77.0,
        "min": 65.0,
        "max": 92.0
      },
      "tmax_mean_c": {
        "years": 15,
        "median": -0.3838709677419356,
        "min": -5.312903225806451,
        "max": 1.5580645161290323
      },
      "tmin_mean_c": {
        "years": 15,
        "median": -10.270967741935483,
        "min": -20.048387096774196,
        "max": -6.690322580645161
      }
    },
    {
      "station": "101990",
      "name": "Kittilä Pakatti",
      "lat": 67.66924,
      "lon": 24.92927,
      "month": 11,
      "period": "month",
      "usable_years": 14,
      "years": [
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020,
        2021,
        2022,
        2023,
        2024,
        2025
      ],
      "missing_snow_days": 5,
      "snow_negative_one_days": 69,
      "snow_zero_days": 5,
      "passes_snow_protocol": true,
      "daylight_midmonth": "5h 21m",
      "snow_ge1": {
        "years": 14,
        "median": 0.9833333333333334,
        "min": 0.2,
        "max": 1.0
      },
      "snow_ge10": {
        "years": 14,
        "median": 0.6333333333333333,
        "min": 0.0,
        "max": 1.0
      },
      "depth_median_cm": {
        "years": 14,
        "median": 14.0,
        "min": 0.0,
        "max": 35.5
      },
      "tmax_mean_c": {
        "years": 15,
        "median": -3.473333333333333,
        "min": -8.303333333333333,
        "max": 1.4766666666666663
      },
      "tmin_mean_c": {
        "years": 15,
        "median": -9.996666666666666,
        "min": -16.076666666666664,
        "max": -3.92
      }
    },
    {
      "station": "101990",
      "name": "Kittilä Pakatti",
      "lat": 67.66924,
      "lon": 24.92927,
      "month": 12,
      "period": "month",
      "usable_years": 15,
      "years": [
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020,
        2021,
        2022,
        2023,
        2024,
        2025
      ],
      "missing_snow_days": 0,
      "snow_negative_one_days": 1,
      "snow_zero_days": 0,
      "passes_snow_protocol": true,
      "daylight_midmonth": "0h 00m",
      "snow_ge1": {
        "years": 15,
        "median": 1.0,
        "min": 0.967741935483871,
        "max": 1.0
      },
      "snow_ge10": {
        "years": 15,
        "median": 1.0,
        "min": 0.7419354838709677,
        "max": 1.0
      },
      "depth_median_cm": {
        "years": 15,
        "median": 38.0,
        "min": 22.0,
        "max": 54.0
      },
      "tmax_mean_c": {
        "years": 15,
        "median": -5.477419354838711,
        "min": -11.351612903225806,
        "max": -1.8612903225806452
      },
      "tmin_mean_c": {
        "years": 15,
        "median": -13.670967741935485,
        "min": -18.745161290322585,
        "max": -7.154838709677419
      }
    }
  ],
  "requests": [
    {
      "year": 2011,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2011-01-01T00%3A00%3A00Z&endtime=2011-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2011.xml",
      "bytes": 121799,
      "sha256": "2dd296a8a9de90bb6dd72679db8b8ebebb08fe80fd8c04b677aa71f5603e0441"
    },
    {
      "year": 2012,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2012-01-01T00%3A00%3A00Z&endtime=2012-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2012.xml",
      "bytes": 121128,
      "sha256": "576dc91f6cbb224491a84e4e9830361f1173f91d1865c2813884b7a8de2210d7"
    },
    {
      "year": 2013,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2013-01-01T00%3A00%3A00Z&endtime=2013-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2013.xml",
      "bytes": 122049,
      "sha256": "aeba819ac0938c8c9e538578276a398f18e61af9184c4fe8d21780f018079bdc"
    },
    {
      "year": 2014,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2014-01-01T00%3A00%3A00Z&endtime=2014-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2014.xml",
      "bytes": 121798,
      "sha256": "1f6a365000ef2f374d66aedb0bbbe337419031baf82600b16e2a3cd5f2a347e4"
    },
    {
      "year": 2015,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2015-01-01T00%3A00%3A00Z&endtime=2015-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2015.xml",
      "bytes": 121674,
      "sha256": "c4172ee02c040e6d84217fbf90d69762dd3fbca9d60cf41988bbdf4c11ed86e5"
    },
    {
      "year": 2016,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2016-01-01T00%3A00%3A00Z&endtime=2016-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2016.xml",
      "bytes": 122126,
      "sha256": "f323bbdb2d6d496a8b39d2af28a9aec390a216ac52af03a45d0e21b65d8de8f2"
    },
    {
      "year": 2017,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2017-01-01T00%3A00%3A00Z&endtime=2017-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2017.xml",
      "bytes": 121591,
      "sha256": "9a723d8d1ab47704e7bea958014619d6cbba92217edbd7647f2237a7de211084"
    },
    {
      "year": 2018,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2018-01-01T00%3A00%3A00Z&endtime=2018-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2018.xml",
      "bytes": 120704,
      "sha256": "790e7ba098a0ff5bb2b176eb059bde3c94a38a0de48d1b789f309a74de8027a4"
    },
    {
      "year": 2019,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2019-01-01T00%3A00%3A00Z&endtime=2019-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2019.xml",
      "bytes": 121978,
      "sha256": "2e9a520aaf3293bb45b006f8200b905cc1e7b5d778961240e514cb17ce016f94"
    },
    {
      "year": 2020,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2020-01-01T00%3A00%3A00Z&endtime=2020-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2020.xml",
      "bytes": 122020,
      "sha256": "33df6a79dba49b8cbf3a56ae7b1725bc0f5d0b8aeff37543293f2ec881f3e62d"
    },
    {
      "year": 2021,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2021-01-01T00%3A00%3A00Z&endtime=2021-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2021.xml",
      "bytes": 122131,
      "sha256": "34ca10f758acd8ba8e02ac364aa14fec8e3c2c6593489ceb17140fa2e360887c"
    },
    {
      "year": 2022,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2022-01-01T00%3A00%3A00Z&endtime=2022-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2022.xml",
      "bytes": 122014,
      "sha256": "fd179aa97aaaf6df8e7060062bebb2e4842b02ce3e24e1780c9c0447b65b8816"
    },
    {
      "year": 2023,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2023-01-01T00%3A00%3A00Z&endtime=2023-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2023.xml",
      "bytes": 122306,
      "sha256": "ee2c4f71544e2b7302f3101ca1f4d12c1c6ac2c5cebd845e8dd89b05398e5ade"
    },
    {
      "year": 2024,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2024-01-01T00%3A00%3A00Z&endtime=2024-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2024.xml",
      "bytes": 122397,
      "sha256": "29dabb3e30c4e011079a97b72c7badd8c7378d4608600acc2713548ee3b8a336"
    },
    {
      "year": 2025,
      "url": "https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=getFeature&storedquery_id=fmi%3A%3Aobservations%3A%3Aweather%3A%3Adaily%3A%3Amultipointcoverage&fmisid=101928%2C101933%2C101986%2C101990&parameters=snow%2Ctmax%2Ctmin&starttime=2025-01-01T00%3A00%3A00Z&endtime=2025-12-31T00%3A00%3A00Z",
      "file": "data/raw/winter/daily-2025.xml",
      "bytes": 121925,
      "sha256": "fe33e17de7cddd1cd03696944cb4a1b535d2d1dd1fe9a759989703d5e9981c75"
    }
  ],
  "result_hashes": {
    "annual.csv": "c89cc8c251238691e63339b5305f63c465308b0af75575d3b26da3228eb6c4b6",
    "summary.json": "3451cef567d578228b8419f7c7b4a7b79343d45f1c5d337ca6d85a8ca184c9f0",
    "sensitivity.json": "8728e730864971f76557839d237a2811aa80b3a98f441be08eb28efd1090c30d"
  },
  "operators": {
    "reviewed": "2026-10-06",
    "levi_slopes": "https://www.levi.fi/en/ski/slopes-and-lifts/",
    "levi_track": "https://www.levi.fi/en/ski/cross-country-skiing/levi-first-snow-ski-track/",
    "rovaniemi_snowmobile": "https://www.visitrovaniemi.fi/activity-product/thrilling-snowmobile-safari-small-group/",
    "rovaniemi_snowhotel": "https://www.visitrovaniemi.fi/accommodation/overnight-in-a-glass-igloo-at-arctic-snowhotel-glass-igloos/",
    "note": "Factual references checked manually. Tourism prose is not imported into the dataset; confirm current dates and conditions with each operator."
  }
}