Dear all,
Here you can find the agenda for the EWC User Workshop 2026 happening on the 22 September 2026 in Darmstadt:
| Duration and times (CEST) | Morning session 1 - The European Weather Cloud Service Update Chair: Roope Tervo | Speakers |
|---|---|---|
8:30 - 09:00 | Arrival and registration | |
9:00 - 09:05 | Opening and welcome | Roope Tervo (EUMETSAT) |
9:05 - 9:30 | Introduction & overview of the current status of the EWC An introduction to the service with philosophy and key benefits. | Roberto Cuccu (ECMWF) |
9:30 - 09:50 | EWC Technical Basics Basic service offering and practicalities including instructions to login via IAM and Horizon, using OpenStack Horizon and EWC CLI. | Tomas Gonzalos (EUMETSAT) |
09:50 - 10:20 | Coffee break | |
10:20 - 11:05 | Service updates Secret management | Kamil Rajtar (EUMETSAT) |
| Container registry | Marcos Hermida Mera (ECMWF) | |
| Managed Kubernetes | Claudiu Vasile Nagy (EUMETSAT) Marcos Hermida Mera (ECMWF) | |
11:05 - 11:30 | Community Hub | Francesco Murdaca (EUMETSAT) |
| Duration and times (CEST) | Morning Session 2 - User Contribution: What are EWC users doing? Chair: Roope Tervo | Speakers |
11:30- 11:50 | Building the MLCast data ecosystem on the foundations of the EWC In this presentation I will outline my experience with using the European Weather Cloud (EWC) to serve as the data hosting service for the MLCast Deep Learining Nowcasting Community (https://mlcast.org), https://github.com/mlcast-community/mlcast-datasets. I will walk through how mlcast-datasets (https://github.com/mlcast-community/mlcast-datasets) was built, how it works and how we make use of EWC to enable the research and development we do on nowcasting using deep learning. You have heard it before: in the age of deep learning and big data we need well-defined and accessible datasets (or ARCO, Analysis-Read Cloud Optimised). In this talk I will demonstrate how we achieved this in the MLCast community and show how you can do the same in your situation. | Leif Denby (DMI) |
11:50 - 12:10 | KAL (Kernel Atmospheric Learner): A Hybrid MSG SEVIRI and Machine Learning Framework for Quantitative Precipitation Estimation in Radar-Absent Regions This presentation will introduce the (Kernel Atmospheric Learner), an hybrid machine learning framework, developed and trained on the European Weather Cloud (EWC), for high-resolution daily Quantitative Precipitation Estimation (QPE) in topographically complex regions that lack ground-based weather radar. | Chris Koliopanos (University of Ioannina) |
12:10 - 12:30 | Visualisation platform for AI Models RMI runs a lightweight forecast viewer on EWC that turns AI-LAM weather model output into an interactive map, letting users browse variables and lead times through a simple web interface. | Michiel Van Ginderachte (RMI) |
12:30 - 13:30 | Lunch | |
| Duration and times (CEST) | Afternoon Session 1 - User Contribution: What are EWC users doing? Chair: Xavier Abellan | Speakers |
13:30 - 13:50 | Studying the evolution of heat waves in Italy over the present century. The study evaluates a suite of climate indicators related to summer heat waves in Italy, aiming to construct a comprehensive, quantitative profile of their evolving characteristics, specifically focusing on frequency, duration and severity over the present century. The base data layer consists of statistically downscaled and bias-corrected projections for Italy, developed by CMCC and Agenzia ItaliaMeteo. The temporal scope of the study is restricted to an extended summer season spanning May to September, capturing the period when heat waves are most acute and pose the greatest risk to human health. Starting from the daily TMAX projections, we calculated the indicators year by year, up to 2100. The reference period, 1985-2014, is used both as the representative distribution to calculate the percentiles and as the time frame to calculate climate normals. Consequentially, we computed the metrics both as absolute values and as anomalies with respect to the 1985-2014 normals. We studied the evolution of those distributions across the chosen periods, in terms of their mean value and standard deviation. Both these two parameters show a projected evolution towards higher values, meaning the occurrence of extreme events from the tail of the distribution are expected to become more frequent. We also studied some specific areas in more detail. | Giulio Settanta (isprambiente) |
13:50 - 14:10 | Sentinel 5 - Processing chain for H2O, OClO and BrO at the European Weather Cloud implemented with DLR's BPMN-based Workflow Management Processor (WMP) The presentation will cover the BPMN-based workflow management and its deployment and testing at the EWC. | Julian Meyer-Arnek (DLR, ACSAF) |
14:10 - 14:30 | Deploying and running satproc on the EWC for processing KNMI ACSAF workloads | Eelco Verduijn (KNMI, ACSAF) |
| 14:30 - 15:00 | Coffee break | |
| Duration and times (CEST) | Afternoon Session 2 -User Contribution: What are EWC users doing? Chair: Xavier Abellan | Speakers |
| 15:00 - 15:20 | OpenGeoWeb - Web based meteorological workstation now on EWC Community Hub This session presents the OpenGeoWeb meteorological workstation hub item now available on the EWC Community Hub, showing how this open‑source GeoWeb‑based platform enables interactive visualisation and analysis of weather and climate data directly in the cloud. It highlights how this item can be deployed on Kubernetes and what can be customized for the users. GeoWeb is developed by KNMI, FMI and MET Norway. | Sampo Savolainen (Spatineo) |
| 15:20 - 15:40 | FLEXPART‑IFS on the EWC Community Hub: A Practical Guide from Prototype to Published Hub Item | Nina Burgdorfer (MeteoSwiss) |
| 15:40 - 16:00 | Using the EWC for research, including applications to climate services and early warning systems in Africa. | Mohamed El Garnaoui (Maroc Meteo) |
| Duration and times (CEST) | Afternoon Session 3 - Discussion and Feedback Chair: Xavier Abellan & Roope Tervo | Speakers |
16:00 - 16:25 | Discussion and question for feedback Hybrid discussion, favouring the in-person discussion. Opportunity for feedback | All participants |
| 16:25 - 16:30 | Wrap up and closing | Xavier Abellan (ECMWF) & Roope Tervo (EUMETSAT) |
| 16:30 - 17:30 | EUMETSAT Tour | |
| 17:30 - | Apero & Dinner |
If you still haven't registered, you can do it using the following link (only online): EWC User Workshop Registration 2026
We look forward to welcoming you to Darmstadt (and online) for this exciting event!
Kind regards,
The European Weather Cloud teams at EUMETSAT and ECMWF
We are happy to announce that we just released 0.7.1 of the EWCCLI: https://pypi.org/project/ewccli/0.7.1/
A lot has happened since the last announcement (0.3.0): new features such as the extra volume flag for servers, region support, improved "ewc infra list" output, better help with links, and several important bug fixes around supported GPU flavours/images, external IPs, login flags, and more.
Full details are in the changelog: https://github.com/ewcloud/ewccli/blob/main/CHANGELOG.mdIf you encounter any issues please report them here: https://github.com/ewcloud/ewccli/issues
We are always happy to get feedback!
Dear EWC user,
Following buckets are accessible from the new endpoint:
drought-and-vegetation.prototype-datacube.netcdf
rep.ahi-jma-nrt-fulldisk.ahixxx10.himawari8.level10.netcdf → new name: ahi-himawari.fulldisk.level1b.netcdf
Users currently accessing the mentioned buckets should update their configuration to use the new S3 endpoint:
https://s3.r1.cloud.eumetsat.int
The previous endpoint will be disabled by 09/08/2026.
No service interruption is expected, and all standard S3 operations will continue to function normally. If you encounter any issues after switching to the new endpoint, please be in touch via https://chat.europeanweather.cloud or https://support.europeanweather.cloud
Kind regards,
EWC Team at EUMETSAT
Dear EWC user,
This is a reminder to join us for the European Weather Cloud (EWC) User Workshop 2026, hybrid again and this time at EUMETSAT in Darmstadt on 22 September 2026.
This full-day event, co-organised by EUMETSAT and ECMWF, will provide an opportunity to explore the latest developments, share experiences, and shape the future of the EWC.
Although this workshop is primarily designed as an in‑person event, online participation will also be available for those who are unable to travel. *If you plan to attend, you must complete your registration by 31 July.
After this date, the registration form will remain open only for online participants. We will not accept additional on‑site registrations through the form after 31 July. If you still need to request on‑site participation, please open a ticket through the EWC Support Portal https://support.europeanweather.cloud/ so we can verify whether space is still available.
We still have a few slots left for user contributions. *If you are interested in presenting, please contact us through the EWC Support Portal https://support.europeanweather.cloud/ or our Discussion Platform https://chat.europeanweather.cloud/
You can find all the information in the event page, including how to register. The final agenda will be published closer to the event date.
We look forward to welcoming you to Darmstadt for this exciting event!
Kind regards,
The European Weather Cloud teams at ECMWF and EUMETSAT
Dear all,
We are pleased to announce that a new use case has been published on the EWC website:
We will share more updates in the future. In the meantime, we would like to remind you that you can still contribute to the EWC website by submitting your use cases.
If you would like your use case to be featured, please contact us via our Support Portal or the EWC Discussion Platform.
Dear EWC user,
Following buckets are accessible from the new endpoint:
- era5.ecmwf.analyses-eo-subset.grib
- mviri.meteosat-0-degree.level-15.native
- cmsaf-cloud-type.meteosat-0-degree.level-2.netcdf-4
Users currently accessing the mentioned buckets should update their configuration to use the new S3 endpoint:
https://s3.r1.cloud.eumetsat.int
The previous endpoint will be disabled by 24/07/2026.
No service interruption is expected, and all standard S3 operations will continue to function normally. If you encounter any issues after switching to the new endpoint, please be in touch via https://chat.europeanweather.cloud or https://support.europeanweather.cloud
Kind regards,
EWC Team at EUMETSAT
As part of essential infrastructure maintenance, all hypervisors underpinning the CCI/EWC platform will require a reboot. This session will take place on Monday 20 July 2026 from 8:00 to 11:00 UTC.
During this maintenance window:
- All user virtual machines will be rebooted and will be unreachable for the duration of the maintenance.
- The Nova API will be unavailable.
- Users should expect any running workloads, sessions, or processes on their VMs to be interrupted.
We recommend users save any in-progress work and anticipate a temporary loss of access to their instances during this period.
We apologise for the inconvenience and appreciate your understanding. As usual, keep up-to-date with any planned outages and overall service status at EWC Service Status page and let us know via the EWC Support Portal if you have any questions or concerns.
Dear all,
We would like to inform you about an upcoming scheduled maintenance window on the EUMETSAT side of the EWC on the legacy/old infrastructure. The maintenance will take place on 9 July 2026, from 07:00 to 12:00 UTC.
This intervention is required to perform network‑related maintenance on the legacy/old infrastructure. No service interruption is expected, and all existing virtual machines and services should continue to operate normally throughout the maintenance window.
While we do not anticipate user‑visible impact, there may be occasional periods of network slowness or dropped connections. Workflows that rely on long‑lasting or persistent network connections - such as data pipelines, large transfers, or streaming operations - may experience interruptions and should be monitored accordingly.
Our team and the cloud provider will be closely supervising the environment during the entire maintenance period.
For updates during the maintenance, please refer to the EWC service status page https://www.europeanweather.cloud/service-status.
As always, If you encounter any issues after switching to the new endpoint, please be in touch via https://chat.europeanweather.cloud or https://support.europeanweather.cloud
Best regards,
EWC Team at EUMETSAT
We are pleased to announce the availability of new updated images at both ECMWF and EUMETSAT for:
- Rocky Linux 8.10
- Rocky Linux 9.7 (replacing 9.6)
- Ubuntu 22.04 LTS
- Ubuntu 24.04 LTS
GPU images have also been updated, on both ECMWF and EUMETSAT sides.
You can already deploy the new images from Morpheus using the usual instance types, or in Openstack using the new image names.
The details on these images are on this page: EWC Virtual Images Available
As a general rule, we strongly recommend you always keep your virtual machines up-to-date with the latest security fixes, as highlighted in our Best practices as a Tenant Admin.
As always, if you need any support, please do get in touch with us on the European Weather Cloud Discussion Platform or through the Support Portal.
Kind regards,
The EWC Team
Dear European Weather Cloud user,
The European Weather Cloud (EWC) teams at ECMWF and EUMETSAT are pleased to welcome you to the new EWC Identity and Access Management System (IAM). This is an important step toward a unified and seamless experience across te EWC, as it will be used for authentication and access to all the available EWC services.
How does it affect you?
The EWC IAM is required to log into OpenStack Horizon, the web portal to manage your EWC infrastructure and resources that replaces the Morpheus orchestrator, which will be retired at the end of 2026. It will also be used to access additional services that will shortly be made available such as the EWC container registry.
What do you need to do?
We have already created your account on the EWC IAM, so you just need to make sure you can log in and start using it. You will need to know the name of the tenancy you belong to, and how you are going to connect:
- If you are running at ECMWF (CCI1 or CCI2) and already have an ECMWF account to access other ECMWF services, you may use the "sign in with ECMWF Account" option after selecting the "European Weather Cloud" login. (See section below for login)
- Otherwise, you will receive a separate email to set up your password on the EWC IAM system itself. Note that in this case, if you have access to more than one tenancy, the passwords need to be set up individually for each of them.
NOTE: Some users on EUMETSAT side are already onboarded to EWC IAM, in that case no actions for you are required.
OpenStack Horizon access
Head to this page for a step-by-step guide to log into OpenStack Horizon portal using your new account.
IMPORTANT NOTE For users with cloud on EUMETSAT side of the EWC: OpenStack Horizon access will be accessible only when your tenancy is onboarded to the new cloud. Therefore if you try to login with your EWC IAM user to OpenStack Horizon on EUMETSAT side, you might see an error until we officially onboard you.
For tenant admins: management of users and more
Tenant administrators have the ability to manage user identities, roles, and access permissions through their Keycloak Admin Console at https://iam.europeanweather.cloud/admin/*tenancy-name*/console/ (replace tenancy-name by the actual name of your tenancy). Once there, you may create additional users, update or delete existing ones, as well as manage their roles and credentials. Check the following documentation for more information.
Note that existing Morpheus users up to now have been imported, but any changes made on Morpheus users from this point onwards will not be reflected on the new IAM system.
If you are have any questions about this new system or experience any issues please contact us through the EWC Support Portal. You may also reach out using the EWC Discussion Platform.
Kind regards,
The European Weather Cloud teams at ECMWF and EUMETSAT
Dear EWC user,
Following buckets are accessible from the new endpoint:
- seviri-meteosat-41-5-degree.fcdr.level15.netcdf
- seviri-meteosat-45-5-degree.fcdr.level15.netcdf
Users currently accessing the mentioned buckets should update their configuration to use the new S3 endpoint:
https://s3.r1.cloud.eumetsat.int
The previous endpoint will be disabled by 03/07/2026.
No service interruption is expected, and all standard S3 operations will continue to function normally. If you encounter any issues after switching to the new endpoint, please be in touch via https://chat.europeanweather.cloud or https://support.europeanweather.cloud
Kind regards,
EWC Team at EUMETSAT
Dear EWC user,
General information for all EUMETSAT data buckets
As part of the ongoing cloud migration on the EUMETSAT side of the European Weather Cloud, we have started migrating the data buckets listed on the following https://confluence.ecmwf.int/pages/viewpage.action?pageId=488063253. You will notice that a new column indicating the S3 endpoint has been added. This column will be updated as soon as each dataset becomes fully available on the new cloud infrastructure. In general, the migration does not affect the content of the buckets, only the endpoint used to access them. Whenever a dataset is migrated, we will issue a dedicated announcement as part of this series. The buckets with the new endpoint are still accessible from old cloud.
seviri-meteosat-0-degree.fcdr.level15.netcdf bucket accessible from the new endpoint
Users currently accessing the bucket s3://seviri-meteosat-0-degree.fcdr.level15.netcdf should update their configuration to use the new S3 endpoint:
https://s3.r1.cloud.eumetsat.int
The previous endpoint will be disabled by the end of the week.
No service interruption is expected, and all standard S3 operations will continue to function normally. If you encounter any issues after switching to the new endpoint, please be in touch via https://chat.europeanweather.cloud or https://support.europeanweather.cloud
Kind regards,
EWC Team at EUMETSAT
Dear all ,
Due to the s3 storage space in the current EUMETSAT side of the EWC reaching its allowed limits, we had to take the bucket seviri.meteosat-rss.level-15.netcdf offline. This action is required to ensure service continuity and to prevent capacity‑related disruptions on the EUMETSAT side of the European Weather Cloud. The same data are available in https://data.eumetsat.int/product/EO:EUM:DAT:0962 and also in reprojected version `seviri.meteosat-rapid-scan.opera-seviri-level-15.netcdf` covering the period of 2018-2023. If you need the removed data in your activities via EWC S3 bucket, please be in touch via https://chat.europeanweather.cloud or https://support.europeanweather.cloud
We apologies for the short notice. If you currently rely on this dataset, please let us know so we can support you.
Thank you for your understanding, and please reach out to the EWC support team if you have any questions or concerns.
Kind regards,
EWC Team at EUMETSAT side
Dear all,
We would like to inform you about an upcoming scheduled maintenance window on the EUMETSAT side of the European Weather Cloud. The maintenance will take place from 22 June 2026, 06:00 UTC to 26 June 2026, 14:00 UTC.
This intervention is required to perform a major upgrade of the underlying Ceph storage system. No service interruption is expected, and all existing virtual machines and services should continue to operate normally throughout the maintenance.
While we do not anticipate user‑visible impact, there may be occasional periods of reduced performance or slower operations due to temporary load on the storage nodes during the upgrade. We recommend keeping an eye on workflows that are particularly sensitive to I/O performance.
We appreciate your understanding and cooperation. Our team and the cloud provider will be closely monitoring the environment during the entire maintenance window.
For updates during the maintenance, please refer to the Service status | The European Weather Cloud.
Best regards,
EWC Team at EUMETSAT
Dear all,
EUMETSAT EWC R&D Projects should be scientific or technical studies to improve the use of EUMETSAT data or products. They have to provide benefits to EUMETSAT Member States through the broad applicability of the project results, and to be of interest to the general scientific community.
EWC R&D Projects provide access to the operational European Weather Cloud service. Public institutions from Member and Cooperating States may apply via the EWC R&D application form: https://ec.europa.eu/eusurvey/runner/EUMETSAT_EWCCall.
For further information on this opportunity and all details on the application process, please check the https://user.eumetsat.int/news-events/news/european-weather-cloud-research-and-development-call.
If you miss the 30 June deadline, you could still submit a "fast-track" via the same form as soon as you can, but the total amount of accessible resources will be limited in size.
For more information on this call and EUMETSAT data, contact our User Service Helpdesk https://www.eumetsat.int/contact-us.