Delhi, Odisha, Rajasthan… scorching heat is making people sweat, this year the heat has broken old records

Ananya Shroff
6 Min Read


New Delhi: These days, heat has created a terrible situation in most states across the country including Delhi-NCR. This time it is much hotter than the last few years. This summer, India has faced the longest heat wave so far. According to the data of the Meteorological Department (IMD), the maximum heat wave was in Odisha, it lasted for 27 days between March 1 and June 9. After this, heat wave lasted for 23 days in western Rajasthan, 21 days in West Bengal which includes the plains of the Ganges, and 20 days in Delhi, Haryana, Chandigarh and western Uttar Pradesh. These figures are more than double the number of heat waves that usually occur in these areas in a year.

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Where did the heat wave last and for how long?

Many of these areas are still experiencing heatwaves. For example, Delhi is experiencing heatwaves for three more days from June 9, taking the total to 23 days. The weather department on Thursday said that severe heatwaves may occur in some areas of north India for the next 4-5 days. Now understanding heatwaves is a bit complicated. Usually, each area has different temperatures, so it is difficult to decide on which day a heatwave will occur. 40 degrees Celsius may be very hot in some areas, while it may be normal for another place. So the weather department sets different temperatures for different areas, crossing which a heatwave day is declared.

This year the heat wave was twice as severe as last year

According to the data of the Meteorological Department (IMD), between March 1 and June 9, 14 out of the 36 meteorological centers in the country recorded more than 15 heatwave days. These centers are spread across the country, with eastern and northern India being the most affected. Heatwave was also recorded for 12 days in cold hilly areas like Himachal Pradesh. After this, there was heatwave for 11 days in Sikkim, 6 days in Jammu and Kashmir and 2 days in Uttarakhand.

Severe heat wave across the country

Meteorologist Madhavan Rajeevan said that the IMD map shows India experiencing more heat than ever before. This was expected and was already predicted. Last year too, the heat was very high. A major reason for such extreme heat is the El Nino effect. In the case of El Nino, we generally face more heat.

Why have the summer days increased?

It has been observed for the last few years that the number of heat and heat wave days is continuously increasing. It is important to understand the reason behind this. Meteorologist Madhavan Rajeevan says that global warming is further increasing the changes in the temperature occurring naturally. He said, 'In the coming times, we may have to face heat wave days more often and for a longer period. Therefore, we need to be fully prepared. Usually, heat wave occurs only for 6 to 8 days in a year in central and north-west India. But this time the heat wave days have surprised even the weather experts.

People will be troubled by the heat for the next five days

According to the Meteorological Department, severe heat conditions are likely to persist in Punjab, Haryana-Chandigarh-Delhi and Uttar Pradesh for the next five days (till June 18), after which these areas may get relief from the heat.

When does the heat wave occur?

The maximum temperature of the weather station should be at least 40 degrees Celsius in plain areas and at least 30 degrees Celsius in hilly areas. Also, it should be 4.5 to 6.4 degrees Celsius higher than the normal temperature.
If the temperature is 6.5 degrees Celsius or more above normal then it is considered an extremely hot day.
If the temperature directly reaches 45 °C then it is declared a heat wave day, and if the temperature reaches 47 °C then it is considered as a severe heat wave day.
A heatwave day is defined as a day when the air temperature is 37°C or more at beaches and 4.5°C or more above normal.

All countries have different standards

Heat waves are declared differently in each country. The method of setting temperature limits varies across the world. The Meteorological Department says that a heat wave is defined based on the temperature of an area. The temperature is either measured directly or it is determined based on how much it is above normal temperature. In some countries, heat waves are declared based on the heat index, which is a combination of temperature and humidity, while in some places very high levels of temperature are considered a heat wave.

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