🛠️ IW Pro Settings Overview (last reviewed May 2025)

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To open the Settings menu, tap or click the three bars in the upper-left corner of the screen.
Here’s a description of each setting. Some have recommended values, but many can be toggled based on your needs. We often switch them on and off during active use.

IW Pro settings

🔧 Settings Breakdown

Layer Opacity
Adjusts the transparency of the radar layer on the map.

Live Mode
When enabled, IW Pro auto-loads new radar frames as they become available.

Velocity Color

  • Velocity 1: Red/blue (Environment Canada standard)

  • Velocity 2: Red/green (more common in U.S.-based radar apps)

NEW – Velocity & Measurement Format
Choose between mph/kph. This setting also determines the units for the measurement tool (mi or km).

Radar Placement Accuracy

  • Recommended: 11 for most devices

  • Use 8 for slower performance

Labels and Boundaries
Toggle on or off to show location names and boundaries.

Time Display
Choose between 12-hour or 24-hour time format.

Canadian Radar Noise Reduction

  • On: Reduces radar interference spikes (“laser beams”)

  • Off: Shows additional features like hail spikes and faint outflow boundaries

Hail Size Estimation
This feature may not be available in the current production version. It was visible in recent builds but has been temporarily removed as we rolled back to a previous version due to performance issues. It may return in a future update.

Lightning Data
Toggle on to view real-time lightning strike locations on the map.

Mosaic Radar Layer
Shows the combined radar mosaic when no specific radar station is selected.
Tip: We recommend also turning off radar icons when using this layer.

NEW – IW StormRisk (Beta)
Displays IW’s experimental storm risk overlay.
[See this blog post for more details.]

NEW – Thunderstorm Forecasts
Shows Environment Canada’s “Thunderstorm Outlooks.”
Choose a time period and opacity level.
[See this blog post for details.]

Alerts
Turn this on to display alerts on the map. You can customize which types of alerts to show:

  • ECCC Alerts (from Environment Canada)

  • IW Instant Updates (our own real-time updates)

  • U.S. Alerts (from U.S. National Weather Service)

    You can also choose which specific alert types appear:

  • Instant Updates

  • Warnings

  • Watches

  • Statements and Advisories

  • U.S. Alerts
    Note: You can mix and match alert types and sources based on your preferences.

💡 Tip

To quickly reload radar data, toggle between Single, Split, and Dual modes.