The heat has saved sixes
According to the IMD, at least 42 cities and towns in Rajasthan, Haryana, Punjab, Madhya Pradesh, Uttar Pradesh, Odisha, Jharkhand, Chhattisgarh and Andhra Pradesh recorded maximum temperatures above 44 degrees Celsius. Delhi’s Safdarjung Observatory recorded a maximum temperature of 44 degrees Celsius, which was four degrees above normal.
The IMD said that the maximum temperature is likely to drop by two to three degrees Celsius in Gujarat and Maharashtra during the next five days. It said that due to the westerly winds coming from the Arabian Sea, there is a possibility of heavy rain in Karnataka, Kerala and Lakshadweep during the next five days. The Meteorological Office has predicted heavy rain at isolated places in South Karnataka on Wednesday, while Coastal Karnataka and Kerala till Saturday.
Delhi likely to get relief in two days
Several parts of the capital witnessed severe heat wave conditions for the sixth consecutive day on Wednesday. By the way, IMD has said that some relief is expected in two days. Four of Delhi’s 11 weather stations recorded heatwave outbreaks on Tuesday. The maximum temperature at the Sports Complex was 46.6 degrees Celsius. This made it the hottest place in the city. Najafgarh, Mungeshpur, Pitampura and Ridge station recorded maximum temperatures of 46.3 °C, 46.2 °C, 45.7 °C and 45.2 °C. The Meteorological Office has issued a yellow alert on Thursday, warning of heat wave conditions at different places in the capital.
In the plains, hot winds are declared as ‘Loo’ when the temperature is more than 40 °C or 4.5 °C above normal. A ‘severe heatwave’ is declared when the temperature is 6.4 degrees above normal.
According to the advisory of the IMD, ‘the risk of symptoms of heat-related diseases is increased in those people who are either exposed to the sun for a long time or do heavy work’. Meteorologists have attributed the heat wave to the absence of a strong western disturbance and continuous hot and dry westerly winds. The maximum temperature in the capital could drop to 41 degree Celsius till Saturday. Monsoon is expected to reach East India by June 15. Along with this, easterly winds will bring moisture and intensify pre-monsoon activity over northwest India.
Mahesh Palawat, vice-president (climate change and meteorology), Skymet Weather, said that the monsoon is likely to reach Delhi around June 27. Last year, the IMD had predicted that the monsoon would reach Delhi about two weeks before its normal date. However, it reached the capital on 13 July, the longest delayed period in 19 years.
Drones may soon replace weather balloons
India collects atmospheric data twice a day by sending sensors through weather balloons from at least 55 locations across the country. But, now soon drones can replace these weather balloons. Telemetry equipment is carried up radiosonde by weather balloons. In these the sensor records atmospheric pressure, temperature, wind direction and speed. The hydrogen-rich weather balloon can reach an altitude of 12 kilometers and sends data via radio signals to ground receivers.