Ensemble images and meteograms for 26 locationsGEFS, ECMWF IFS ENS, AIFS ENS, GEPS, AIGEFS, ICON-EU EPS, ICON Global EPS, MOGREPS-G · GFS meteograms
Weather maps, ensemble charts and local forecasts
Compare the local forecast and ensemble spread with weather forecast maps for Greece, European weather maps and world weather maps. Explore temperature, precipitation, wind and pressure, depending on the variables available for the selected model. Check the valid time and run shown on each map before comparing charts.
Select one of 25 major Greek cities or Agios Stefanos to view ensemble images from the available systems and the GFS meteogram. Images are prepared in advance and updated progressively when a complete new run is available.
7-day forecast for Athens · Syntagma
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Snowfall forecast image · GFS ensemble
Open the snowfall chart for the selected city, as on the legacy models page. Fresh snowfall and snow depth are different quantities; missing snow-depth data is marked in the caption.
Each image displays its own run in UTC and Greek local time. Updates are published progressively after completeness checks. During a provider delay, the last complete image remains visible with its original run. Wider ensemble spread indicates greater uncertainty; a model grid forecast is not a station measurement.
Athens · Syntagma — GFS ensemble (GEFS) · 850 hPa
Athens · Syntagma — GFS ensemble (GEFS) · 2 m
Athens · Syntagma — GFS ensemble (GEFS) · Snowfall forecast
Athens · Syntagma — GFS · Meteogram
Athens · Syntagma — ECMWF IFS · 850 hPa
Athens · Syntagma — ECMWF IFS · 2 m
Athens · Syntagma — ECMWF AIFS · 850 hPa
Athens · Syntagma — ECMWF AIFS · 2 m
Athens · Syntagma — GEM / GEPS · 850 hPa
Athens · Syntagma — GEM / GEPS · 2 m
Interactive ensemble — Athens · Syntagma
Explore forecast spread, individual members and available weather models.
Open Interactive ensemble — Athens · Syntagma in a full page
Interactive meteogram — Athens · Syntagma
Explore hourly weather forecasts and compare available models.
Open Interactive meteogram — Athens · Syntagma in a full page
AIGEFS · 850 hPa · 31 members
AIGEFS · 2 m · 31 members
ICON-EU EPS · 2 m · 40 members
ICON Global EPS · 2 m · 40 members
MOGREPS-G · 2 m · 18 members
Interactive models for Greece, Europe, worldwide and your location
Sources: Open-Meteo, NOAA, ECCC, ECMWF, DWD and Met Office.
What each weather model means
A single forecast shows one possible evolution. An ensemble shows several members: their spread expresses uncertainty and the mean is not a guarantee. Compare the same run, time and location.
- ICON-EU — DWD · Germany
- European regional model, about 7 km, up to 5 days. Describes regional weather; individual slopes remain unresolved.
- ICON Global — DWD · Germany
- Global single forecast. Official maps and point products may use different output grids.
- UKMO Global — Met Office · United Kingdom
- Global forecast at about 10 km. Direct screen temperature refers to 1.5 m above ground.
- ARPEGE Europe — Météo-France · France
- European output of the global ARPEGE model. Our official 0.1° surface-map package provides temperature, pressure, wind and precipitation, without 850/500 hPa maps.
- JMA GSM — JMA · Japan
- Japan Meteorological Agency global model. Direct maps use the coarser 1.25° product, up to 132 hours; the point product differs.
- AIGFS / AIGEFS — NOAA · United States
- AIGFS is a single AI forecast. AIGEFS is its separate 31-member ensemble on a 0.25° grid. AIGEFS images show 2 m or 850 hPa temperature with precipitation.
Available ensembles and images
GEFS 31 members, IFS ENS 51, AIFS ENS 51, GEPS 21, AIGEFS 31, ICON-EU EPS 40, ICON Global EPS 40 and MOGREPS-G 18. GEFS also has snow charts. ICON EPS and MOGREPS images here show near-surface temperature and precipitation; their current feeds do not supply our 850 hPa charts. MOGREPS direct screen temperature is at 1.5 m.
Updates, elevation and verification
Run time is the model initialisation time, not the time it becomes available. Data appear after publication, completeness checks and collection. A cached image can remain visible while a newer run is pending: inspect its run and source. UTC converts to Greece time with +3 hours in summer and +2 in winter. Official maps are collected on demand and may need several collection cycles.
Corrected location elevations are preserved. Native terrain and target elevation differ; a single documented temperature correction is applied where appropriate. If the nearest point cell is masked as sea, an adjacent verified land cell within 50 km may be used and is recorded. No terrain value is invented. Additional model weights remain unchanged. Automatic backtesting uses forecasts saved before observations, with identical station identity and valid time. Precipitation and upper-air verification need separate quality-controlled observations. Fourteen common days is only a minimum; one sample cannot establish a ranking.
Sources, coverage and backtest method · City ensemble images