EM Snow combines open data from the services below. We are grateful to every one of them.
Weather data by Open-Meteo.com
Licence: Data CC BY 4.0; free hosted API is non-commercial · https://open-meteo.com/
Weather data by Open-Meteo.com
Licence: Data CC BY 4.0 (s3://openmeteo, AWS Open Data); server AGPLv3 (run stock, no modifications) · https://github.com/open-meteo/open-data
Météo-France, AROME and ARPEGE model data via meteo.data.gouv.fr, Licence Ouverte 2.0, forecast runs updated continuously
Licence: Licence Ouverte v2.0 (Etalab): commercial use and redistribution with attribution · https://meteo.data.gouv.fr/
Based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF)
Licence: CC BY 4.0 plus ECMWF Terms of Use (attribution wording prescribed, removable on ECMWF request) · https://www.ecmwf.int/en/forecasts/datasets/open-data
Contains modified Copernicus Climate Change Service information (ERA5)
Licence: CC BY 4.0 (CDS licence change 2025-07-02) · https://open-meteo.com/en/docs/historical-weather-api
Map data (c) OpenStreetMap contributors, via OpenSkiMap.org
Licence: ODbL 1.0 · https://openskimap.org/
Structured data from Wikidata
Licence: CC0 1.0 Universal (Public Domain Dedication) · https://www.wikidata.org/
Copyright (c) 1991-present Unicode, Inc. Unihan kMandarin readings, unicode.org/copyright.html
Licence: Unicode License v3 (Data Files and Software) · https://www.unicode.org/reports/tr38/
WSL Institute for Snow and Avalanche Research SLF
Licence: SLF public measurement API · https://www.slf.ch/
GeoSphere Austria
Licence: CC BY 4.0 · https://www.geosphere.at/
Météo-France réseau nivo-météorologique
Licence: Licence Ouverte 2.0 · https://meteofrance.com/
USDA NRCS SNOTEL
Licence: US public domain · https://www.nrcs.usda.gov/
NVE (seNorge/gts.nve.no)
Licence: NVE open data · https://www.nve.no/
SMHI öppna data
Licence: CC BY 4.0 · https://www.smhi.se/
BC Automated Snow Weather Stations (gov.bc.ca)
Licence: BC Open Government Licence · https://www.gov.bc.ca/
Snowy Hydro Ltd snow courses
Licence: Snowy Hydro public data · https://www.snowyhydro.com.au/
Japan Meteorological Agency (AMeDAS)
Licence: JMA open data · https://www.jma.go.jp/
Agencija RS za okolje (ARSO)
Licence: ARSO public data · https://www.arso.gov.si/
Czech Hydrometeorological Institute (ČHMÚ), opendata.chmi.cz
Licence: CC BY 4.0 · https://opendata.chmi.cz/
European Avalanche Warning Services (EAWS) member agencies
Licence: CC BY family (per-member country, see eaws.org) · https://www.avalanches.org/
Webcams provided by windy.com - add new webcam
Licence: Windy Webcams API v3 terms of use (account.windy.com/agreements/windy-api-webcams-terms-of-use) · https://www.windy.com/
Ratings data via Foursquare
Licence: Foursquare Places API terms · https://location.foursquare.com/
Lift status courtesy of the named resort operators
Licence: Per-operator; see perFeed triage
Source: Federal Office of Topography swisstopo Source dataset last updated 2025-01-01.
Licence: swisstopo open government data, free of charge including commercial use, source reference required · https://www.swisstopo.admin.ch/en/height-model-swissalti3d
IGN, MNT LiDAR HD, Licence Ouverte 2.0; dataset update date recorded per clip in the DEM manifest Source dataset last updated 2025-05-01.
Licence: Licence Ouverte / Open Licence 2.0 (etalab), commercial use permitted with attribution · https://geoservices.ign.fr/lidarhd
Digitales Gelaendemodell (DTM) Oesterreich, BEV, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/), clipped and resampled for per-resort use Source dataset last updated 2025-09-15.
Licence: CC BY 4.0 · https://data.bev.gv.at/geonetwork/srv/api/records/9a4e3e4f-2cd5-4f73-af51-384beb9331d0
Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The organisations in charge of the Copernicus programme by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30 Source dataset last updated 2021-01-01.
Licence: Free for any use including commercial, subject to the Copernicus DEM licence notice · https://registry.opendata.aws/copernicus-dem/
Generated using Copernicus Atmosphere Monitoring Service information; distributed via Open-Meteo self-hosted sync (CC BY 4.0 redistribution)
Licence: Copernicus free and open data policy (Regulation (EU) No 1159/2013): worldwide, royalty-free reuse including commercial, attribution required · https://atmosphere.copernicus.eu/
Data obtained from the Global Wind Atlas version 4.0, a free, web-based application developed, owned and operated by the Technical University of Denmark (DTU). The Global Wind Atlas version 4.0 is released in partnership with the World Bank Group, utilizing data provided by Vortex, using funding provided by the Energy Sector Management Assistance Program (ESMAP). For additional information: https://globalwindatlas.info | Citation: Davis, N.N., Badger, J., Hahmann, A.N. et al. (2023), The Global Wind Atlas: A high-resolution dataset of climatologies and associated web-based application, Bulletin of the American Meteorological Society 104(8): E1507-E1525, DOI: https://doi.org/10.1175/BAMS-D-21-0075.1
Licence: CC BY 4.0 (modified: clipped to resort areas and aggregated along lift geometry) · https://globalwindatlas.info
© ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021), processed by ESA WorldCover consortium
Licence: CC BY 4.0 (modified: zonal aggregation along piste corridors) · https://esa-worldcover.org
Registry version 1, updated 2026-08-09.