If the deviation from normal temperature exceeds 6.4 degrees then a severe heat wave is declared.
New Delhi:
The India Meteorological Department (IMD) on Monday said that the extreme heat wave will continue for the next five days in large parts of eastern India.
The second heat wave of this month is going on in parts of West Bengal, Odisha, Jharkhand and Bihar.
According to the Meteorological Department, heat wave conditions have prevailed in Odisha since April 15 and in Gangetic West Bengal since April 17.
In a statement, the MD said heat wave conditions ranging from mild to severe are expected in parts of West Bengal, Karnataka, Odisha, Tamil Nadu, Uttar Pradesh and Jharkhand during the next five days.
It said that high humidity may increase the problems of people in coastal Andhra Pradesh, Tamil Nadu, Puducherry, Karnataka, Goa, Kerala, West Bengal and Bihar.
Night temperatures are likely to be quite high in East Madhya Pradesh on April 22 and April 23. High temperatures at night are considered dangerous because the body does not get a chance to cool down.
Nighttime heat increases are even more common in cities due to the urban heat island effect, in which metro areas are significantly warmer than their surrounding areas.
The heat wave threshold is met when the maximum temperature at a weather station reaches at least 40 degrees Celsius in plains, 37 degrees in coastal areas and 30 degrees in hilly areas, and a deviation of at least 4.5 degrees from normal. It happens. ,
If the deviation from normal temperature exceeds 6.4 degrees then a severe heat wave is declared.
Amid prevailing but weakening El Nino conditions, the IMD had earlier warned of extreme heat during the April-June period, when nearly a billion people are expected to exercise their franchise during the seven-phase Lok Sabha elections, Due to which concerns regarding sensitivity to heat waves have increased. ,
The first phase of voting was held on 19 April. The second phase of voting is to be held on April 26.
The weather office has said that there is a possibility of heat wave for four to eight days in different parts of the country in April, whereas generally there is a possibility of heat wave for one to three days. The heat wave is likely to last for ten to 20 days compared to the usual four to eight days in the entire April-June period.
The areas and regions that are predicted to see a higher number of heatwave days are Madhya Pradesh, Gujarat, Odisha, Andhra Pradesh, Madhya Maharashtra, Vidarbha, Marathwada, Bihar and Jharkhand. More than 20 heatwave days may be recorded at some places.
The extreme heat may put pressure on the power grid and result in water shortages in some parts of India.
Global weather agencies including IMD are also expecting La Nina conditions to develop towards the end of the year.
El Nino conditions – periodic warming of surface waters in the central Pacific Ocean – are associated with weak monsoon winds and dry conditions in India. La Niña conditions – the opposite of El Niño – cause abundant rainfall during the monsoon season.
In a mid-April update, the IMD said India will see above normal cumulative rainfall in the 2024 monsoon season, with La Nina conditions expected to be the major factor, expected to set in by August-September.
Monsoon is important for India’s agricultural landscape, with 52 percent of the total cultivable area dependent on it. It is also important for replenishing the vital reservoirs for drinking water apart from power generation across the country.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
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