HIRLAM (High Resolution Limited Area Model) is an operational synoptic and mesoscale weather prediction model. The model is developed by an international program formed by institutes from Finland, Sweden, Norway, Denmark, Iceland, the Netherlands, Ireland, Spain, Estonia and Lithuania. There is also close co-operation with France.

The Finnish Meteorological Institute (FMI) provides its operational Hirlam model runs to be freely accessed via Amazon S3. The data is licenced under the Creative Commons Attribution 4.0 International license (CC BY 4.0).

The data is updated four times a day with analysis hours 00, 06, 12 and 18. Corresponding model runs are available roughly five hours after analysis time (~ after model run has started).

Full documentation on HIRLAM model data is available from the Finnish Meteorological Institute.

The data is uploaded into two Amazon S3 Buckets in the EU (Ireland) region:

  • s3://fmi-opendata-rcrhirlam-surface-grib (for surface data)
  • s3://fmi-opendata-rcrhirlam-pressure-grib (for pressure levels data)

Every model run is stored in separate directories divided into files based on parameters. Every file contains all valid times for one parameter and one model run.

Files are named following this pattern


For example:


The data is stored into following directory structure:


Where times are derived from origin time of the model run.

Content of the buckets can be browsed in a web browser at:

  • http://fmi-opendata-rcrhirlam-surface-grib.s3-website-eu-west-1.amazonaws.com/
  • http://fmi-opendata-rcrhirlam-pressure-grib.s3-website-eu-west-1.amazonaws.com/

Public Amazon SNS topics are available for every new object added to the Amazon S3.

  • arn:aws:sns:eu-west-1:916174725480:new-fmi-opendata-rcrhirlam-surface-grib
  • arn:aws:sns:eu-west-1:916174725480:new-fmi-opendata-rcrhirlam-pressure-grib

For more information on subscribing to SNS topics, visit http://docs.aws.amazon.com/sns/latest/dg/SubscribeTopic.html.

For more information on Amazon S3 event message structure, visit http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html.

Finnish Meteorological Institute
Format GRIB2
License Creative Commons Attribution 4.0 International (CC BY 4.0)
Storage Service Amazon S3
Location s3://fmi-opendata-rcrhirlam-surface-grib

In EU (Ireland)
Update Frequency Four times daily

Please contact avoin-data@fmi.fi if you have any questions about this dataset.

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