stated on the page: huggingface.co

--- title: ECMWF IFS summary: The Integrated Forecasting System: ECMWF's global physics-based model (high-resolution and ensemble forecasts, four runs a day). mount: --- # ECMWF IFS > Kept by incident.meteorology@web-summit.dinis, 11 November 2026, 11:36 UTC [Where a forecast comes from](../index.md) · Models · id `model-ecmwf-ifs` · [as data](model-ecmwf-ifs.json) The Integrated Forecasting System: ECMWF's global physics-based model (high-resolution and ensemble forecasts, four runs a day). **Address:** [https://www.ecmwf.int/en/forecasts/documentation-and-support](https://www.ecmwf.int/en/forecasts/documentation-and-support) (leaves this site) ## What it is connected to, and who says so | This | Verb | That | The page that says so | Read | Check | |---|---|---|---|---|---| | ECMWF IFS | **assimilates** | [Meteosat (geostationary)](obs-meteosat.md) | [ecmwf.int](https://www.ecmwf.int/en/about/media-centre/focus/2020/fact-sheet-earth-system-data-assimilation): "stations, aircraft, radiosondes, ships or buoys. Other observations are based on remote sensing, for example from satellites or ground-based radar. Most satellite instruments measure electromagnetic radiation emitted fro" *ECMWF's fact sheet says satellites in general; that these are among them is in ECMWF's monitoring pages, still to be read: the edge stands on the general statement.* | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **assimilates** | [Metop (polar orbiters)](obs-metop.md) | [ecmwf.int](https://www.ecmwf.int/en/about/media-centre/focus/2020/fact-sheet-earth-system-data-assimilation): "stations, aircraft, radiosondes, ships or buoys. Other observations are based on remote sensing, for example from satellites or ground-based radar. Most satellite instruments measure electromagnetic radiation emitted fro" *ECMWF's fact sheet says satellites in general; that these are among them is in ECMWF's monitoring pages, still to be read: the edge stands on the general statement.* | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **assimilates** | [Radiosondes (weather balloons)](obs-radiosondes.md) | [ecmwf.int](https://www.ecmwf.int/en/about/media-centre/focus/2020/fact-sheet-earth-system-data-assimilation): "at the location of the instrument. Such in-situ measurements come for example from weather stations, aircraft, radiosondes, ships or buoys. Other observations are based on remote sensing, for example from satellites or g" | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **assimilates** | [Aircraft reports (AMDAR)](obs-aircraft.md) | [ecmwf.int](https://www.ecmwf.int/en/about/media-centre/focus/2020/fact-sheet-earth-system-data-assimilation): "conditions at the location of the instrument. Such in-situ measurements come for example from weather stations, aircraft, radiosondes, ships or buoys. Other observations are based on remote sensing, for example from sate" | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **assimilates** | [Buoys and ships](obs-buoys-ships.md) | [ecmwf.int](https://www.ecmwf.int/en/about/media-centre/focus/2020/fact-sheet-earth-system-data-assimilation): "location of the instrument. Such in-situ measurements come for example from weather stations, aircraft, radiosondes, ships or buoys. Other observations are based on remote sensing, for example from satellites or ground-b" | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **assimilates** | [Surface weather stations (SYNOP)](obs-surface-stations.md) | [ecmwf.int](https://www.ecmwf.int/en/about/media-centre/focus/2020/fact-sheet-earth-system-data-assimilation): "observations reflect conditions at the location of the instrument. Such in-situ measurements come for example from weather stations, aircraft, radiosondes, ships or buoys. Other observations are based on remote sensing, " | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what ECMWF AIFS is trained on and starts from** | [ECMWF AIFS](model-ecmwf-aifs.md) | [huggingface.co](https://huggingface.co/ecmwf/aifs-single-1.0): "neural network (GNN) encoder and decoder, and a sliding window transformer processor, and is trained on ECMWF’s ERA5 re-analysis and ECMWF’s operational numerical weather prediction (NWP) analyses. It has a flexible and " *Trained on ERA5 and on IFS analyses; each run starts from the IFS analysis: a machine-learned model has no observations of its own.* | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what ECMWF ensemble (ENS) is the same model as** | [ECMWF ensemble (ENS)](model-ecmwf-ens.md) | [ecmwf.int](https://www.ecmwf.int/en/forecasts/datasets/open-data): "are published at two resolutions: the existing 0.25 degrees and, from 20 October 2026, a finer 0.1 degrees - both produced from the same IFS model and interpolated to a lat/long grid. The lower resolution data are releas" *The ensemble and the high-resolution forecast are one model, the IFS, run differently.* | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what ECMWF open data carries** | [ECMWF open data](data-ecmwf-open.md) | [ecmwf.int](https://www.ecmwf.int/en/forecasts/datasets/open-data): "Use Browse the data files Licence: description View licence A subset of ECMWF real-time forecast data from the IFS and AIFS models is made available to the public free of charge. Their use is governed by the Creative Com" | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what MET Norway weather API (api.met.no) carries** | [MET Norway weather API (api.met.no)](data-metno-api.md) | [docs.api.met.no](https://docs.api.met.no/doc/locationforecast/datamodel): "forecasts are updated once every hour. For medium range forecasts (2–10 days) the 51 member ensemble forecast from ECMWF is used. It it updated twice pr day. Horizontal resolution is approximately 9 km. Air temperature, " *Outside the Nordic area the Locationforecast is ECMWF's: Lisbon and Funchal are outside.* | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **redistributed by** | [Open-Meteo](data-open-meteo.md) | [open-meteo.com](https://open-meteo.com/en/docs/ecmwf-api): "ECMWF Forecast API / Open-Meteo.com Open-Meteo Home Features Pricing API Docs Animations GitHub X Toggle theme ECMWF Weather Forecast API Full Resolution 1-hourly IFS HRES" | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **run by** | [ECMWF](body-ecmwf.md) | [ecmwf.int](https://www.ecmwf.int/en/forecasts/datasets/open-data): "Use Browse the data files Licence: description View licence A subset of ECMWF real-time forecast data from the IFS and AIFS models is made available to the public free of charge. Their use is governed by the Creative Com" | 11:28 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [Windy](site-windy.md) | [community.windy.com](https://community.windy.com/topic/12/what-source-of-weather-data-windy-use): "different weather models. Below is a brief overview of all models which you can find on Windy . Global models: ECMWF (European Centre for Medium-Range Weather Forecasts) is sometimes informally known in the USA as the "E" | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [Ventusky](site-ventusky.md) | [ventusky.com](https://www.ventusky.com/about): "Radar Satellite Wind speed Wind gusts Clouds Air pressure CAPE Snow cover Humidity Sea Air quality Wind Animation ECMWF, GFS, ICON, GEM Two New High-Resolution Weather Models on Ventusky About us About us Data sources He" | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [Wetterzentrale](site-wetterzentrale.md) | [wetterzentrale.de](https://www.wetterzentrale.de/en/default.php): "Home page wetterzentrale.de Toggle navigation Top Karten Global models GFS ECMWF UKMO GEM ICON ARPEGE NAVGEM JMA Regional models WRF ICON D2 HARMONIE AROME ALARO IRIE Data-driven models AIFS AIGFS GraphCastGEM Other 9-pa" | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [Tropical Tidbits](site-tropicaltidbits.md) | [tropicaltidbits.com](https://www.tropicaltidbits.com/analysis/models/): "and HiresW mesoscale models , replacing them with RRFS and the REFS Ensemble GFS Run Time: 06Z Nov 11 Global ECMWF EC-AIFS GFS AIGFS CMC ICON JMA Ensemble EPS AIFS-ENS GEFS GEPS Hurricane HWRF PENA 04C CEMPAKA 31W THREE " | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [ECMWF charts and open data](site-ecmwf.md) | [charts.ecmwf.int](https://charts.ecmwf.int/): "ECMWF / Charts Home About Forecasts Computing Learning Publications ECMWF logo Charts Help Support Opencharts news Log in Dashboard Log out Charts You need to enable JavaScript" | 11:29 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [MeteoPT](site-meteopt.md) | [meteopt.com](https://www.meteopt.com/): "MeteoPT.com Comunidade de Meteorologia Português Español English menu_home menu_forum menu_models menu_global GFS ECMWF AIGFS ECMWF-AIFS UKMO ICON ARPÈGE menu_comparator menu_ensemble GEFS ECMWF ENS menu_observation menu" *The models menu of the community's home page.* | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [IPMA](site-ipma.md) | [ipma.pt](https://www.ipma.pt/pt/otempo/prev.numerica/): "Açores - Oriental Arq. Açores - Central Arq. Açores - Ocidental URL fixo Utilidades Altera caixas de selecao Selecione Modelo: -- MODELO -- ECMWF ECMWF [FRONTAL] Selecione Campo: -- CAMPO -- Geopotencial/Vento Pressao NM" *IPMA's public charts page offers one model in its selector: ECMWF.* | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what Weather Underground takes as forecast input** | [Weather Underground](site-wunderground.md) | [wunderground.com](https://www.wunderground.com/about/data): "Pressure Temperature Cloud Cover Humidity Chance of Precipitation Dew Point Forecast input A variety of inputs, including, but not limited to, ECMWF, GFS, and NAM Mostly NAM and GFS Sky Conditions Uses radar and satellit" *Listed as "forecast input" to its own system, BestForecast.* | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **visualised by** | [Met Éireann (Ireland)](site-meteireann.md) | [met.ie](https://www.met.ie/): "previous hour (accumulations), then in 3 hourly and finally 6 hourly accumulations up to 7 days. This service is based on data and products of the HARMONIE-AROME and the European Centre for Medium-range Weather Forecasts" | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what Observador: general live blog leading on Charles reports the runs of** | [Observador: general live blog leading on Charles](site-sc-observador-live.md) | [observador.pt](https://observador.pt/liveblogs/manifestantes-detidos-no-porto-pronunciam-se-sobre-suspensao-provisoria-do-processo/) *The live blog reports what the latest ECMWF runs showed; no excerpt kept.* | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what Luso Meteo: "Tempestade Charles pode, afinal, ser mais fraca do que o previsto" discusses the forecast of** | [Luso Meteo: "Tempestade Charles pode, afinal, ser mais fraca do que o previsto"](site-sc-lusometeo.md) | [lusometeo.com](https://lusometeo.com/atualidade/tempestade-charles-mais-fraca-32997/) | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what Euronews: three pieces in English reports simulations of** | [Euronews: three pieces in English](site-sc-euronews.md) | [euronews.com](https://www.euronews.com/2026/11/10/portugal-on-alert-as-storms-bruna-and-charles-raise-sting-jet-risk-of-160-kmh-winds) | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **informs warning by** | [US National Hurricane Center](svc-nhc.md) | [nhc.noaa.gov](https://www.nhc.noaa.gov/modelsummary.shtml): "cyclone (TC) along based on the prevailing flow obtained from a separate dynamical model (either the GFS or the ECMWF). Super Intelligence/Machine Learning (SI/ML) models are trained on reanalysis outputs from dynamical " | 11:30 UTC, 11 Nov | stated on the page | | ECMWF IFS | **is what IPMA open data (api.ipma.pt) is computed from** | [IPMA open data (api.ipma.pt)](data-ipma-open.md) | [api.ipma.pt](https://api.ipma.pt/): "(cidades) e localização dos eventos sísmicos, no JSON. Os dados de previsão são obtidos automaticamente através de processamento estatístico das previsões de dois modelos numéricos (ECMWF e AROME), sendo atualizados duas" *IPMA's automatic forecasts in its open data: statistical processing of two models, updated twice a day (00 and 12 UTC runs). The automatic forecast, not the warnings.* | 11:28 UTC, 11 Nov | stated on the page | ## Licence: what we may do with it **ECMWF open data (IFS and AIFS real-time forecasts)**: CC BY 4.0, with ECMWF's Terms of Use ([ecmwf.int](https://www.ecmwf.int/en/forecasts/datasets/open-data), read 11:28 UTC, 11 Nov, stated on the page). | Read | Store | Show | Transform | Attribution | |---|---|---|---|---| | yes | yes | yes, with attribution | yes, with attribution | "Copyright © [year] European Centre for Medium-Range Weather Forecasts (ECMWF)", the source, the licence, and a statement of any change made. | No service guarantee; the open subset is coarser (0.25°) and later than what members receive. --- Not a warning service: this page explains where data comes from. For warnings follow [IPMA](https://www.ipma.pt/pt/otempo/prev-sam/) and ANEPC.