❄️ Snowly provides access to high-resolution snowfall forecasts for Europe in both 2D and 3D. The meteorological analysis over Greece is produced at a spatial resolution of 400 m, while the rest of Europe is processed at 2.5 km. The 3D mode includes detailed terrain, allowing you to see how topography affects snowfall.

The forecasts are generated using a post-processing model of Snowly, that performs downscaling on several Numerical Weather Prediction systems. Input data come from:
• ICON-EU (DWD)
• IFS (ECMWF)
• GFS (NOAA)
• GEM (CMC)

Updates are issued twice per day: early morning and afternoon (European time), for the 00z and 12z cycles respectively.

Two snowfall variables are available:
• 3-hour snowfall - total model precipitation classified as snowfall, over the past 3 hours at each timestep.
• Accumulated snowfall - cumulative model precipitation classified as snowfall, since model initialization time.

Snowly does not predict snow depth. The model analyzes total precipitation and strictly classifies it as snowfall only when atmospheric conditions allow. Values represent liquid-water equivalent (1 mm = 1 L/m²), not snow height or existing snowpack.

Additional map layers allow you to display cities, roads and ski centres and pistes.

👥 This application is developed by Giannis Dravilas and Giorgos Kyros. Giannis holds a degree in Computer Science and is currently attending the MSc in Artificial Intelligence at the University of Amsterdam. He has worked in several Data Science and AI roles for weather companies and organizations. Giorgos holds an MSc in Web Intelligence and works as a Data Analyst and Visualization Specialist in the weather and climate domain at the National Observatory of Athens / meteo.gr and Climatebook.gr.

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Data & Attributions:

This service presents snowfall forecasts generated by Snowly. Our model downscales and processes data from the following major weather agencies to create new predictions. Please note that none of the agencies below endorse this website or are responsible for the specific forecasts presented here. Snowly provides these forecasts 'as is' without warranty of any kind, and accepts no liability for decisions made based on this information.

• • NOAA/NCEP (USA): Input data from the GFS model. Source: NOAA/NCEP (Public Domain).
• • Environment and Climate Change Canada (CMC): Input data from the GEM/GDPS model. Based on data provided by Environment and Climate Change Canada, licensed under the Data Server End-use Licence.
• • Deutscher Wetterdienst (Germany): Input data from the ICON-EU model. Source: DWD, licensed under dl-de/by-2-0.
• • ECMWF (Europe): Input data from the IFS model. Copyright © 2025 European Centre for Medium-Range Weather Forecasts (ECMWF). Source: www.ecmwf.int. Licensed under CC BY 4.0.
  Disclaimer: ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use.
• Altitude contours produced using Copernicus WorldDEM-90. © 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.
• Ski centre and piste layers sourced from OpenSnowMap.org contributors (based on OpenStreetMap), licensed under CC BY-SA.
• City data by GeoNames (licensed under CC BY 4.0).
• Road data by Natural Earth.