This grey hatched coverage area is dynamic and updated every 6 minutes.įor a map solely indicating areas of no forecast and alert services, visit the “ No Forecast and Alert Services Map” page. These include areas where the missing data is due to a radar being out of service. Outages and no networkĪreas covered by grey hatching on the map indicate areas of no radar coverage where radar data is not available, or intermittently missing. This map is open source and details are available on the Canada Base Map Transportation (CBMT) page on the Open Government website. The transportation base map adds major Canadian railways, roads and highways to the default map. Also, by selecting the four corners icon this will expand the map to a full screen view. Selecting the home icon will return the map to the national view the current location icon will centre the map on the user’s location. This action is achieved by selecting the or on the top left of the map, or scrolling with your mouse wheel on top of the chosen location. Users can zoom in and out, and pan the map to see what is occurring in different parts of the country. turn off the alerts layer or the radar layer to view just one layer at a time.select the “play button” to view the movement of observed precipitation,.select a coloured alert area to learn more about the alert,.This interactive weather map shows the observed precipitation and all the alerts in effect at a glance. By default, the fourteen colour palette is used, but some users may find the eight colour palette more accessible. The radar layer intensity can be displayed using an eight or fourteen colour palette. Note, however, that these two modes cannot be displayed simultaneously, and once the choice is made, the coloured imagery only indicates the intensity of precipitation. It is the default from December 1 to March 31. Snow mode displays precipitation in cm/h. It is the default from April 1 to November 30. Rain mode displays precipitation in mm/h. Our radar imagery has two “modes” – rain or snow mode – and each mode is automatically displayed depending on the season. The radar map displays the intensity of the precipitation by way of varying colours. This action will bring up a pop-up window that provides precipitation rate information for that location. Users can get radar precipitation rate information for areas within the radar network coverage in Canada by selecting an area on the map. This option allows a user to look further back in time at the previous motion of the precipitation. The “long animation” displays a series of 16 frames at 12-minute intervals over a three hour period. The “short animation” option displays a series of 11 frames at 6-minute intervals over a one hour period and is the default display of the radar imagery. How to access radar information on the map Speed of animation Radar imagery is useful in determining when precipitation will reach a given location. The legend on the radar map indicates the intensity of the precipitation. Weather radar is a tool for tracking storms in real time and allows you to see the current location and previous movement of precipitation. For technical details on the radar, please visit the ' About Canadian weather radar' page.
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