India, June 19 -- Delhi remained warm on Friday with the maximum temperature settling at 39.1 degrees Celsius, one notch above normal, even as the India Meteorological Department (IMD) issued a yellow alert and forecast thunderstorms accompanied by lightning, light rain and gusty winds during the night.

The city began the day under partly cloudy skies, with the minimum temperature recorded at 27 degrees Celsius, 0.5 notches below the seasonal average.

Similar weather conditions are likely to continue on Sunday, with the weather office predicting thunderstorms and rainfall in parts of the national capital.

Station-wise data showed that Ridge recorded the highest maximum temperature in Delhi-NCR at 40 degrees Celsius, 1.7 degrees above n...