MUMBAI, May 15 -- The India Meteorological Department (IMD) has issued a yellow alert for rain in the city on Thursday, the second time this week. A yellow alert indicates light to moderate rains with gusty winds. The alert applies to Thane, Raigad, and Palghar, which will witness thunderstorms accompanied by lightning, rainfall, and gusty winds at 40 to 50kmph. Even though the yellow alert remains only for Thursday, light rains will likely continue till Sunday. As per the weekly forecast, daytime temperatures will be around 33-34degC and the average nighttime temperature will be 26degC. However, this is subject to change based on emerging weather patterns. Mumbai has been seeing pre-monsoon rains since the last week. After recording sporadic light showers in some parts of on Tuesday morning, the city was dry on Wednesday.HTC...