Blog

Dear @all ,

We would like to inform you about an upcoming maintenance window on EUMETSAT side of the EWC that will take place on Tuesday, 18 November 2025, between 10:00 UTCand 11:00 UTC.

This maintenance will affect interaction with OpenStack resources and EWC services on EUMETSAT side of the EWC.

This intervention is a necessary step to ensure the continued security and reliability of all workloads hosted on the EWC on EUMETSAT side.

What to expect:
• Temporary unavailability of VM lifecycle operations (create/modify/delete) from Morpheus and from Openstack directly.
• Short interruptions in storage and network access.
• Existing VMs are expected to remain running, although workloads that cannot tolerate brief disruptions may experience impact.

Recommendations for users:
If your workload is not resilient to temporary disruptions, we advise you to stop it before the maintenance begins and restart it once the maintenance is complete.

Our team and the cloud provider will be closely monitoring the process to minimise service impact.

We apologise for any inconvenience this may cause and thank you for your understanding and cooperation.

For updates during the maintenance, please refer to the EWC service status page

Best regards,
EWC Team on the EUMETSAT side

Dear all,

We are planning to remove the following shared object storage buckets from the EUMETSAT side of the EWC on 21 November (see the EUMETSAT Data Store for alternative access):

• ascat.metop-abc.level-1b.native
• iasi.metop-a.level-1c.native
• mviri.meteosat-0-degree.level-15.native
• seviri.meteosat-0-degree.level-15.native

• nwc-saf.0-degree.level-2 (Note: the corresponding CF-compliant version remain)

And following OPERA composites in BUFR format (please use the corresponding HDF5 products instead):

• rainfall_accumulation.composite.opera.bufr
• rainfall_rate.composite.opera.bufr
• reflectivity.composite.opera.bufr

If you still require local shared bucket access to any of these datasets, please contact us via:
https://support.europeanweather.cloud or https://chat.europeanweather.cloud

Hi all ,

EUMETCast Terrestrial over AMT is being upgraded to support anycast addressing on the GEANT AMT Relays. A new anycast address is now available: 62.40.96.44

This upgrade ensures automatic routing to the nearest AMT Relay, improving reliability and simplifying multicast data distribution.

🔧 For Existing Stations

All existing users should update their AMT configuration to use the new anycast address before the end of October. After this date, individual AMT Relay IPs will be retired.

Please follow the update workflow provided here: How to update startup script for EUMETCast Terrestrial station on EWC

This workflow will replace the station’s startup script to support the new anycast configuration.

🔄 For New Stations After 14th May 2025

If you are setting up a new EUMETCast Terrestrial station using the VM available on Morpheus after 14th May 2025, no action is needed — the configuration is already up to date.

If you encounter any issues just contact us via our Support Portal or discussion platform.

EWC Team on EUMETSAT side

Dear all ,
 
We would like to inform you about an upcoming scheduled maintenance window that will take place on Tuesday, 28 October 2025, between 9:00 UTC and 10:00 UTC.
 
The maintenance will involve OpenStack’s Keystone authentication that may temporarily affect Morpheus operations (creating/deleting/updating) and all interaction with services that require authentication (e.g. Openstack Application Credentials). 
 
Existing VMs are expected to remain unaffected.
 
Our team and the cloud provider will be closely monitoring the process to ensure minimal disruption.
 
We apologise for any inconvenience this may cause and thank you for your understanding and cooperation.
 
For updates during the maintenance, please check the EWC service status page.

Best regards,

EWC Team on EUMETSAT side

Dear all,

We’d like to inform you that we identified a visualization issue in the EWC Accounting Dashboard, affecting certain charts and usage displays since June 2025. (The issue did not impact the underlying accounting data) The issue has been already resolved for data until September 2025. Visualisation for October 2025 will be fixed at the end of the month, and from November 2025 onwards no further issues are expected.

If you still notice any inconsistencies or have specific questions regarding your tenancy’s accounting data, please raise a ticket through the EWC Support Portal so we can assist you.

Thank you for your understanding and collaboration.

Kind regards,
EWC Team

Dear all,

On 20 October 2025 we plan to update EWC Rocketchat starting from 7:00 AM UTC. The process should take around 1h.

During the maintenance period, rocketchat could not be accessible or not available. All data will be saved before update.

We apologize for any inconvenience this may cause.

EWC team

The 8th European Weather Cloud (EWC) User Workshop was held on 18 September in Bologna, hosted by ECMWF as part of its 50th anniversary celebrations. The workshop brought together users, developers, and service providers to share experiences and learn from each other. It was also an opportunity to look back at how the EWC has grown and to look ahead at how it will continue to support the meteorological community in Europe.  This year’s event gathered more than 70 participants, with around half joining in Bologna and the rest connecting remotely. It was the first time the workshop was run in a hybrid format — a step forward after previous editions were held fully online.

The day started with updates from the EWC teams. Participants heard about the current state of the service, recent developments and future plans. A key announcement was the launch of the EWC Community Hub, a new platform designed to make it easier for users to share and access open-source resources tailored to the European Weather Cloud. The Hub brings together a growing collection of open-source, ready to use resources, including Infrastructure as Code (IaC), configuration blueprints, containerised applications, algorithms, datasets, and documentation. An initial version of the European Weather Cloud (EWC) Command Line Interface (CLI) to interact with EWC services, including the Hub, was also showcased. By fostering collaboration and reducing duplicated work, those initiatives were warmly welcomed by participants as a valuable step forward in building a stronger, more connected EWC community.

The highlight of the workshop was of course the chance to hear directly from the community and the users themselves. Several organisations presented how they are using the EWC in their daily work, from running applications in the cloud to sharing resources more effectively. The talks ranged from exploring extreme weather across Europe to predicting future runoff from the Greenland Ice Sheet with AI tools. We also saw examples of how cloud-native workflows are unlocking access to vast datasets, and how ECMWF’s new “Forecast-In-A-Box” is harnessing GPU-powered virtual machines on the EWC to deliver fast, on-demand data-driven weather forecasts.

Several speakers highlighted the value of the EWC for research and operations: from satellite-based deep learning projects at the University of Cologne, to real-time processing of ground-based atmospheric observations at MeteoSwiss, and the creation of long-term satellite climate records at DWD. The Italian CAMS National Collaboration Programme showed how a coordinated, multi-institutional effort is using the EWC to support air quality and climate services for citizens and policymakers. These real-world examples showed the benefits of the EWC in practice, and underlined the EWC’s growing role as a shared, flexible infrastructure where scientists and institutions can collaborate, experiment, and make better use of weather and climate data.

The workshop closed with an open discussion on feedback and future priorities. Participants highlighted the importance of continued collaboration, and ensuring the EWC remains flexible to support a wide range of use cases. A clear theme was the need for reliable, round-the-clock availability to support operational workloads, along with clearer responsibility for service continuity. Participants also stressed the importance of practical improvements such as better tools for user and access management, stable storage solutions and backup options. There was very positive feedback on recent developments like the Community Hub and command-line interface, while views on deployment tools such as Morpheus showed that user needs and preferences can vary widely. Overall, the discussion emphasised both the progress made and the areas where further enhancements would help users make the most of the platform.

At the end of the day, participants had the chance to step inside ECMWF’s computer hall. The tour offered a behind-the-scenes look at the infrastructure that powers the European Weather Cloud at ECMWF, as well as the high-performance computing facility (HPCF) and the vast data archive. For many, it was a rare opportunity to see up close the scale and complexity of the systems that support weather prediction and climate research across Europe.

If you missed it or you would like to go back to some of the presentations, you may find all the material and recordings at https://events.ecmwf.int/event/479/.

Dear all,

We are excited to announce the launch of the EWC Community Hub — a centralized platform where EWC users can discover, evaluate, select, and deploy items and services tailored to the European Meteorological Community and running in EWC.

The Community Hub brings together a wide range of open-source contributions, designed to accelerate collaboration and make cloud technologies easier to use in meteorological application.

The platform is made up of three main parts:

• Community Hub Items: A growing collection of open-source resources, including Infrastructure as Code (IaC), configuration blueprints, containerized applications, algorithms, datasets, and documentation — all tailored to the EWC.
• Community Hub Dashboard: A single interface where you can browse, filter, and select the items that best fit your needs.
• Community Hub Tooling & Documentation: Step-by-step support to help you use the items effectively, regardless of the technology.

More specifically, the Community Hub fosters collaboration among EWC users, provides cloud technologies tailored to meteorological applications, and offers community-vetted resources to reduce duplicated work. It also supports learning through practical examples and helps transform existing software into cloud-compatible solutions.

To start exploring, visit the EWC Community Hub.

We have many items from the EWC team but there are already some Community Items and we look forward to work with you on getting more items available to the EWC Community. Check this link to learn how you can contribute to the EWC Community Hub

For further details, documentation how to deploy, check the EWC Knowledge Base.

We also released an initial version of the European Weather Cloud (EWC) Command Line Interface (CLI) to interact with EWC services. The ewccli It's a Python package and available on PyPI, soon on conda-forge. Check here for more info. We look forward to your feedback. It's also open source! (so also Issues or Pull Request directly there are great!)

If you need assistance or would like to provide feedback, please reach out via the EWC Support Portal or join the conversation on the EWC Discussion Platform.

Best regards,
The EWC Team

Dear all,

We would like to inform you of an upcoming maintenance on the  EWC Accounting Dashboard. This will take place on Tuesday, 16 September 2025, from 15:00 UTC to 19:00 UTC.

During this period, you may experience temporary disruptions when accessing accounting data and related functionalities.

For further updates during the maintenance, please refer to the EWC service status page.

Thank you for your understanding and cooperation.

EWC team

We would like to inform you about upcoming infrastructure maintenance on part of the hosts on the EUMETSAT side of the European Weather Cloud (EWC). The maintenance will take place on 3 September 2025, from 15:00 to 18:00 UTC.

During this window, virtual machines (VMs) running on the affected hosts will be restarted. This will cause a short downtime for the affected VMs. Please ensure you save your work and prepare for a temporary service interruption during this period.

If you have any concerns regarding your workloads, or would like to know whether a specific VM is affected, please contact us at https://chat.europeanweather.cloud or raise a ticket at https://support.europeanweather.cloud 

We apologize for the inconvenience and thank you for your understanding!

Dear all,

We would like to inform you of an upcoming maintenance on the S3 service on the EUMETSAT side of the EWC. This will take place on Wednesday, 13 August 2025, from 12:00 UTC to 14:00 UTC.

During this period, you may experience micro fluctuation on S3 bucket access and login service.

For further updates during the sessions, you can monitor the EWC service status page.

For updates during the maintenance, please refer to the EWC service status page.

Thank you for your understanding and cooperation.

EWC team,
EUMETSAT side of the EWC

Dear all,

We are excited to announce the pilot release of the Managed Kubernetes on the EUMETSAT side of EWC. 

This service allows tenants to create and manage their own Kubernetes clusters within their tenancy. The Kubernetes control plane is centrally managed by EWC administrators, while dedicated worker nodes are deployed inside each tenant’s environment — ensuring isolation, flexibility, and full control of application workloads. 

To request access to the service during the pilot phase, please raise an EWC support ticket. 

Documentation and setup instructions are available here.

🧪 Please note: This pilot is part of the validation phase of the Managed Kubernetes Service at EUMETSAT side. Users are encouraged to test the functionality and provide feedback. The cluster management is subject to change as part of the ongoing harmonization of EWC services.

EWC team,
EUMETSAT side of the EWC

We are pleased to announce the availability of new updated images at both ECMWF and EUMETSAT for:

• Rocky Linux 8.10
• Rocky Linux 9.5
• Ubuntu 22.04 LTS
• Ubuntu 24.04 LTS — which we've just added as a new option

You can already deploy the new images from Morpheus using the usual instance types. There are details on these images on this page: EWC Virtual Images Available

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 all ,

We would like to inform you of an upcoming network maintenance on the EUMETSAT side of the EWC that will take place on Wednesday, 16 July 2025 from 20:00 UTC to 20:30 UTC.

No impact is expected during this maintenance window.

For further updates during the sessions, you can monitor the EWC service status page.

Thank you for your understanding and cooperation.

EWC Team