Reflectivity and vertical velocity as measured by the McGill UHF Wind Profiler radar over the last 24 hours. The horizontal axis is Eastern Standard Time, and the vertical axis is altitude in kilometres. This image is updated approximately 10 minutes after each hour.

The radar points vertically and gets echos from rain, snow, turbulence, insects and birds overhead. The vertical velocities are found by measuring the Doppler shift of the echoes. The reflectivities are the rain-equivalent reflectivities and are derived from mean SNR levels of the samples included in the velocity data.

• The McGill Profiler home page, description, photos, and parameters.
• Wind barb plot
• Hourly consensus RASS temperature plot
• Last few hours plot of reflectivity
• Last few hours plot of vertical velocity
• Weather radar images, latest, McGill users only, or delayed, other users.
• Last weeks observations : Mon, Tues, Weds, Thurs, Fri, Sat, & Sun.
• McGill Radar and Weather Data Archive (includes historical profiler data).