Canada Life building

Canada Life Building

To finally put a small debate to rest, I searched to find what the colours and lights mean on the Canada Life building in downtown Toronto.

The beacon on top of the building tells the temperature and weather conditions through a system of coloured and flashing lights.
Weather code:

Green = clear weather, red = cloudy weather, flashing white = snow, flashing red = rain.

Weather code:

Running up = warmer temperature, running down = cooler temperature, steady = no change.

During the day the signals are for the rest of that day. At night it shows the forecase for the next day.