Why ‘Lorna’ and ‘Fani’ had Maharashtra seriously hot under the collar
The expert said that when the cyclone in southern hemisphere dissipated, the impact of sinking motion decreased the intensity and the temperatures in the area in southern hemisphere dipped to 38 degrees Celsius.Updated: May 03, 2019, 15:10 IST
The city and other parts of the state experiencing heatwave during the last week of April as forecast by the India Meteorological Department (IMD) has been attributed to two cyclones by a climate expert.
Explaining the phenomenon, Jeevan Prakash Kulkarni, senior climate expert and chairman of India Meteorological Society Pune, said, “The city faced heatwave conditions from April 24 to April 30. The maximum temperatures were above normal by four degrees Celsius over central India and two degrees over entire country. April, May and June are the warmest period of the year.
Additional sinking — air coming from upper layer to lower layer of atmosphere, high above the ground — was generated by the two cyclones formed over southern hemisphere, tropical cyclone Lorna over Indian Ocean and cyclone Fani in the northern hemisphere.”
According to Kulkarni, “The effect of these cyclones intensified the motion over central India, which caused an increase in temperature by three to four degrees above the normal. So, the temperature in Nagpur, Akola and Amravati was 43 to 44 degrees Celsius. In Pune, the temperature rose to 41 degrees Celsius.”
The expert said that when the cyclone in southern hemisphere dissipated, the impact of sinking motion decreased the intensity and the temperatures in the area in southern hemisphere dipped to 38 degrees Celsius. However, central India is still experiencing the heatwave. When Fani dies down, the temperature will also reduce. This is likely to happen on May 3.
El Nino effect
Effect of El Nino, an oceanic phenomenon over the Pacific region, and the studies have shown that there is a probability of deficiency of rainfall. “But every El Nino will not add to drought-like situation of less rainfall. It has a negative impact as per the IMD bulletin of April. There is a 50 per cent probability of El Nino developing in the ocean, but we will have to wait and see,” said Kulkarni.
Pune sees slight drop in temperature
According to the India Meteorological Department (IMD), the heatwave has subsidised, bringing the temperature in the city to 35.8 degrees Celsius as of 3 pm on Friday. The temperature in some parts of central Maharashtra like Jalgaon, Parbhani, Usmanabad, Nagpur and Wardha hovered between 41 and 45 degrees Celsius on Thursday. IMD has also issued a heatwave warning in some parts of Vidharbha between May 2 and May 6.
According to IMD forecast, from May 2 to May 8, the weather will be dry in Maharashtra and Goa. There will be light rainfall in Konkan and Goa on May 3 and May 4. However, on these days, the weather will remain dry in Marathwada, central Maharashtra and Vidharbha.