❄️ 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.

Two snowfall variables are available:
• 3-hour snowfall – accumulation over the past 3 hours at each timestep.
• Accumulated snowfall – total snowfall since the model initialization time.

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 is currently attending the MSc in Artificial Intelligence at the University of Amsterdam and has worked in several Data Science and AI roles for weather companies and organisations. Giorgos holds an MSc in Web Intelligence and works as a Data Analyst in the weather domain.

Attributions
• Our snowfall model uses input data from NOAA/NCEP GFS (public domain).
• Our snowfall model uses input data from Environment and Climate Change Canada – GEM/GDPS, licensed under the Data Server End-use Licence.
• Our snowfall model uses input data from DWD ICON-EU, licensed under Datenlizenz Deutschland – Namensnennung – Version 2.0 (dl-de/by-2-0).
• Our snowfall model uses input data from ECMWF IFS, licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).
• Ski centre and piste layers show the locations of ski resorts and ski runs, sourced from OpenSnowMap.org contributors (based on OpenStreetMap), licensed under CC BY-SA.