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TOC > MSC data > Radar > Radar data on MSC GeoMet

Weather radar data available on MSC GeoMet

MSC GeoMet provides access to several popular North American weather radar composite layers. Users can build mobile apps, create interactive web maps, or display and animate weather radar layers in desktop software.

Access to the geospatial web services

The weather radar layers are available on GeoMet-Weather via the Web Map Service (WMS) standard.

Example of a web map configured to display the weather radar composite using WMS layers served by MSC GeoMet:

MSC GeoMet's North American weather radar composite layers can be seen in action in ECCC's WeatherCAN mobile app.


The usage overview page provides generic information on using these services with desktop software, mobile apps, interactive web maps and direct access. Please refer to the tutorials and technical documentation on MSC GeoMet geospatial web services for detailed information. See also the main weather radar data page which links to additional information on weather radar.

Available layers

Weather radar layers are updated every 10 minutes. The last 3 hours of data is available on MSC GeoMet.

North-American weather radar composite at 1 km:

  • Radar precipitation rate (Rain) (1 km) [mm/hr], ID: RADAR_1KM_RRAI
  • Radar precipitation rate (Snow) (1 km) [cm/hr], ID: RADAR_1KM_RSNO
  • Radar reflectivity (Rain) (1 km) [dBZ], ID: RADAR_1KM_RDBR
  • Corresponding dynamic radar coverage layers:
    • Coverage for Rain, ID: RADAR_COVERAGE_RRAI. ID for inverted style: RADAR_COVERAGE_RRAI.INV
    • Coverage for Snow, ID: RADAR_COVERAGE_RSNO. ID for inverted style: RADAR_COVERAGE_RSNO.INV

North-American weather radar composite at 4 km:

  • Radar precipitation rate (Rain) (4 km) [mm/hr], ID: RADAR_RRAI
  • Radar precipitation rate (Snow) (4 km) [cm/hr], ID: RADAR_RSNO
  • Radar reflectivity (Rain) (4 km) [dBZ], ID: RADAR_RDBR
  • Radar reflectivity (Snow) (4 km) [dBZ], ID: RADAR_RDBS

Usage tips

Retrieving the list of latest radar layer timesteps available:

WMS styles:

  • In addition to the default WMS style, several alternative WMS styles with different color scales are available. The list of available WMS styles is provided in the WMS GetCapabilities response
  • Furthermore, users can request layers with their own custom styles with the Styled Layer Descriptor (SLD) standard, please refer to the SLD technical documentation


  • Legends are available for every WMS style. Details are provided in the WMS legend technical documentation
  • Legend retrieval request example: https://geo.weather.gc.ca/geomet?version=1.3.0&service=WMS&request=GetLegendGraphic&sld_version=1.1.0&layer=RADAR_1KM_RRAI&format=image/png&STYLE=RADARURPPRECIPR14-LINEAR



The MSC GeoMet services are operational 24/7. User support is provided on a best-effort basis during normal business hours. If you have any questions about these services, please contact us.

Announcement mailing list

We encourage users to subscribe to the GeoMet-Info announcement mailing list to be informed of enhancements and changes to the MSC GeoMet services.