Recent Improvements as of Sept 6

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  • updating faster

  • no more flickering with lightning or alerts

  • no more lightning conflicts with city names

  • faster animation

  • measurement tool in single mode

  • changing products is faster

If you are having issues seeing the controls at the bottom of the screen on mobile devices please try adding IW Pro to your Home Screen.

We are also working on fixing the issues with Noise Reduction on Canadian Radars.

Adding IW Pro to your Home Screen

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Update: Some Android users have found that this isn’t working anymore. We think that there was a change made to Chrome. It may work better if you have only one tab in your browser window when you add it to your Home Screen.

Both Android and iOS users should try Opera Mini or Opera if they are experiencing any issues with not being able to see all of the controls.

By adding IW Pro to your home screen you can easily click on the icon that is created instead of going to your browser to open up IW pro. This also has the advantage of giving IW Pro more screen space. You may need to pinch the screen to make IW Pro fit. Since there is no refresh button please click on the chosen radar twice when you need to reload the page.

How to add IW Pro to your home screen:

  • Safari or Chrome on iOS

    • open up IW Pro

    • click on the Share button

    • scroll to “Add to Home Screen” and click on it

    • change the name to IW pro (or whatever you would like)

    • Example with Safari - Youtube video

  • Chrome on Android

    • open up IW Pro

    • click on the three dots

    • scroll to “Add to Home Screen” and click on it

    • change the name to IW pro (or whatever you would like)

    • Example YouTube video showing steps

Requested features - Updated Aug 10

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  • Lighter coloured map option

  • Drop down boxes for Radar options (products) and Tilts/Elevation in addition to the arrows

  • Switch the settings choices from drop down to on/off toggles instead to be more touch friendly with stripped down browsers

  • Add more information about the alerts such as the time they were issued

  • Automatically add new frames when animating

  • Different error message when radar station is down vs other issues

The Anatomy of the Life of a Supercell

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This video by Twister Hunter is “A visual journey through the processes that cause the formation of supercell thunderstorms and tornadoes.”

Included in this video is what can be seen on radar.

Tip for map on mobile devices

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On some mobile devices if you select Desktop site in Chrome you will see more of the map. Click the three dots to select Desktop site.

Teressa M reported that is works well with a Samsung S20.

White screen on mobile - Update Aug 15

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Update Aug 15:

A possible solution to a white screen on a mobile device is to clear the browsing data on chrome. Specifically the Cookies and Site Data. You may see a spinning circle or a plain white screen.



Update Aug 9: The white screen when logging in should no longer be an issue. You should get the password box in portrait now.

If you are only seeing a white screen when you click on the link for IW Pro please turn your device sideways (landscape mode) and then the password box will pop up. You can turn it back to portrait mode after entering your password.

Hail spike example

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You need to turn off Canadian Noise Radar Reduction to see it and don't forget to reload the page when you make a change to a setting. When hail is really large you can get a spike. "A hail spike or three body scatter spike (TBSS) is an artifact on a weather radar display indicative of large hail. They are identified by a spike of weak reflectivity echoes that extend out from a thunderstorm, and away from the radar site." https://en.wikipedia.org/wiki/Hail_spike

Settings as of July 22 2023

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Layer Opacity:

Live Mode: When turned on IW Pro will auto load new frames as they become available.

Velocity Color: Velocity 1 is red/blue (Environment Canada standard) and Velocity 2 is red/green (more commonly used)

Radar Placement Accuracy: Use a lower value if your device is slow (8) otherwise we recommend 11.

Labels and Boundaries:

Canadian Radar Noise Reduction: Turn on to remove the radar interference spikes (laser beams). Turn off to see features such as hail spikes and faint outflow boundaries.

Lightning Data: Turn off to see more town and city names.

Alerts: Turn on to see the ECCC alerts and Instant Weather updates.

How to read radar

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There are some great YouTube videos that describe how radar works and how to read radar. While they use different apps the principles are the same.

We will add some of our own videos later as our app has some unique features that other apps do not have.