Mumbai, May 10 -- A blistering sun and high humidity earlier on Saturday transitioned into cloudy skies and dust-raising winds towards the evening in the Mumbai Metropolitan Region. The India Meteorological Department (IMD), which has placed both south Mumbai and the suburbs under a yellow alert for Sunday, attributed the current weather conditions to two parameters. "Northerly winds in the lower levels are keeping temperatures in the 35-37degC range over Mumbai and adjoining areas. At the same time, humidity levels are gradually increasing as we transition towards the monsoon season, leading to greater discomfort," said Sushma Nair, senior scientist, Regional Meteorological Centre, IMD Mumbai. The Santacruz weather station recorded a maximum temperature of 35.6 degree Celsius (two degrees above normal) and minimum temperature was 28.2degC (1.8 degrees above normal). Humidity levels reached 75% at 8:30 am and dropped to 58% at 5:30 pm. In contrast, south Mumbai recorded normal day and night temperatures at 34.4degC and 27.6 degree Celsius, respectively. However, the weather changed suddenly at 4pm, with strong winds kicking up dust. "Since we are still in the transition phase towards monsoon, the surface soil is relatively dry and loose. Under strong wind conditions associated with thunderstorm outflows, this can lead to dust-raising winds," said Nair. "Evening storms are a typical feature of pre-monsoon season."...