ECMWF

23/10/2026

🌍 Celebrating 20 years of TIGGE

Twenty years ago, an ambitious international collaboration was established to bring together ensemble forecasts from weather centres around the world. Today, TIGGE has become a globally recognised resource supporting research on forecast uncertainty, predictability and high-impact weather events.

As one of the archive hosts and a driving force behind the initiative since its inception, ECMWF has helped provide researchers with consistent access to global ensemble forecast data, enabling scientific collaboration and innovation across the meteorological community.

The success and continuity of TIGGE demonstrate the value of international cooperation, shared infrastructure and long-term commitment to open scientific research.

Special thanks and congratulations to the many scientists, operational forecasting centres, institutions and data managers whose dedication and collaboration have made TIGGE such a lasting success over the past two decades.

Read more: https://www.ecmwf.int/en/about/media-centre/focus/2026/tigge-20-celebrating-two-decades-global-ensemble-forecast-data

21/10/2026

🌍 COP31 Türkiye is fast approaching.

Experts, policymakers and organisations from around the world will soon come together to discuss solutions for a more resilient future.

ECMWF is preparing to contribute to these important conversations, drawing on decades of expertise in weather and climate science. Our delegation will participate in various panel discussions and meetings, including those held as part of Earth Information Day.

More updates coming soon as we count down to COP31 in Antalya.

20/10/2026

A step change in localised forecasts: ECMWF’s 9 km data is now free and open.

The move will give more people access to accurate and localised forecasts.

The resolution can make the difference, for example, between predicting rain in a large area and knowing which valley it will land in.

The release of the data, which until now has only been available via a paid service agreement, comes a year after ECMWF made its 25 km resolution data free, and is part of ECMWF’s commitment to providing free and open science.

Read more ➡️ https://www.ecmwf.int/en/about/media-centre/news/2026/9-km-free-and-open-data-offers-step-change-localised-forecasts

19/10/2026

☀️ The summer of 2026 was exceptionally warm across western Europe, with several record-breaking heatwaves.

The first episode began in late May, when many national and local May maximum-temperature records were broken across western Europe.
A second heatwave developed over western Europe in late June, before shifting eastward, breaking all-time temperature records in several central and northern European countries.

In the latest Science Blog, ECMWF Senior Scientist Linus Magnusson reviews ECMWF’s prediction of these unusual summer temperatures, with a particular focus on forecasts on the sub-seasonal timescale – from around two to six weeks ahead.

Read more ➡️ https://www.ecmwf.int/en/about/media-centre/science-blog/2026/forecasting-european-heatwaves-2026

16/10/2026

Introducing AIFS-COMPO, a new data-driven forecasting system for global atmospheric composition.

Adapting ECMWF’s Artificial Intelligence Forecast System (AIFS) to aerosols and reactive gases, AIFS-COMPO is trained on data from the Copernicus Atmosphere Monitoring Service (CAMS). It provides global forecasts up to 10 days ahead and explores the potential of AI for a new area of Earth-system prediction.

The first AIFS-COMPO charts are now available. They cover six groups of products: aerosol fields for dust, sea salt, biomass-burning aerosol and sulphate; particulate matter (PM2.5 and PM10); and carbon monoxide, nitrogen dioxide, ozone and sulphur dioxide shown at pressure levels, at the surface and as total columns.

Find out more about AIFS-COMPO ➡️ https://www.ecmwf.int/en/about/media-centre/news/2026/aifs-compo-ai-atmospheric-composition-forecasting

16/10/2026

Today is World Food Day 🇺🇳

Climate change is one of the main drivers of food insecurity and complex emergencies. It also compounds other drivers of hunger, including conflict and economic downturns.

The UN World Food Programme (WFP) uses ECMWF data to monitor global risks.

Our seasonal and subseasonal forecasts help WFP:

• Identify areas likely to experience drought or flood conditions

• Activate contingency plans

• Pre-position food and logistics assets in vulnerable locations

• Estimate populations at risk of food insecurity

• Trigger anticipatory actions programmes

1 in 3 people around the world still lack access to early warning s...

13/10/2026

ECMWF scientists have extended the Artificial Intelligence Forecasting System (AIFS) to jointly forecast the atmosphere, ocean waves, sea ice and key surface-ocean fields.

The resulting prototype, AIFS Marine, learns physically consistent relationships between atmospheric and marine components within a single forecasting model.

AIFS Marine expands the model state with a compact set of variables representing the surface ocean and sea ice. It produces skillful forecasts for almost all evaluated marine variables.

Find out more about AIFS Marine

➡️ https://www.ecmwf.int/en/about/media-centre/aifs-blog/2026/aifs-marine

13/10/2026

Today, ECMWF and The Parliament hosted the panel debate “The climate breaking point: Turning disruption into preparedness” at Brussels Climate Week.

️Summer 2026 will likely be remembered not just for the scale and frequency of its weather extremes, but for what they revealed about Europe's readiness to face them.

Carlo Buontempo, Director of the Copernicus Climate Change Service at ECMWF, provided an overview of the European climate in 2026 drawing on data about extreme heat, drought, wildfires and ozone pollution from the Copernicus Climate Change Service and the Copernicus Atmosphere Monitoring Service.

The session also showcased ECMWF products related to the Copernicus Energy and Health Hubs as well as the suite of applications developed through Copernicus to support industry users and policy makers to inform themselves and make evidence-based decisions.

13/10/2026

Today, on the International Day for Disaster Risk Reduction, let’s take a closer look at how ECMWF’s forecasts support disaster prevention and emergency management:

🌪️ ECMWF operates a 24/7 global forecasting systems that predicts severe weather, including storms, heavy rainfall and tropical cyclones

🌊 ECMWF is the computational centre for the European Flood Awareness System (EFAS) and the Global Flood Awareness System (GloFAS), which provide flood forecasts and are part of the EU-funded Copernicus Emergency Management Service (CEMS)

🔥 ECMWF supports the European Forest Fire Information System (EFFIS) and the Global Wildfire Information System (GWIS) by producing European and global fire danger forecasts for CEMS

By supporting initiatives such as Strengthening Early Warning in Africa (SEWA), the UN’s Early Warnings for All (EW4ALL) and the Risk-informed Early Action Partnership (REAP), ECMWF also helps strengthen early warning systems and improve anticipatory action across the globe.

12/10/2026

This evening, ECMWF gave a special briefing on “Weather and Climate Intelligence for Europe” to MEPs Stefano Bonaccini, Lynn Boylan and Christophe Grudler.

Director-General Florian Pappenberger explained how weather and climate intelligence can support Europe’s security, resilience and competitiveness and Director of the Copernicus Climate Change Service at ECMWF Carlo Buontempo highlighted the findings of the Climate Summer Review.

One of the main findings was that 37% of European land experienced an all-time record in daily, monthly or seasonal average temperature during summer 2026.

Find the full Climate Summer Review here ➡️ https://climate.copernicus.eu/european-summer-2026-records-extremes-and-context