Chennai woke upto a thick blanket of fog today (23/12/2007)

Taramani Road

Most vehicles had to switch on the head light as the visibility was very poor

Two wheeler rider at Taramani Road at about 7 in the morning with head light on

According to Weather officials (as reported in The Hindu of January 23, 2006) fog is common during winter, particularly in December and January when cloud formation is poor. Abundant moisture, light wind and a stable atmosphere cause fog formation. Clouds occurring close to the surface are called fog. Whether fog will form over a city depends on the values of humidity, temperature and wind speed. Several combinations of these can produce fog but its thickness and duration is equally determined by tiny particles of pollutants.

Another view from my apartment terrace at Velachery

By about 08.45 the fog cleared, as I could see when I travelled to Adyar