![]() ![]() But evaporation becomes harder when the air is heavy with moisture. The principle is simple: because we cool down by sweating, the more readily sweat evaporates, the less hot you feel. The wet-bulb temperature, meanwhile, stood at 28.8☌ at 2.30pm.A wet-bulb temperature provides insights into the evaporative cooling potential at a given time. Prolonged exposure to a heat index of 26-32☌ will likely cause fatigue in many people, while 32-40☌ is widely associated with sunstroke, and 40-54☌ with heatstroke. It is commonly used to assess the risk of heat-related illnesses and heat stress. The heat index, also known as the “feels like” temperature, is a calculation that depicts what the temperature feels like to the human body when relative humidity is combined with the air temperature and wind speed. At the same time, there was a relative humidity at 37% and both these factors made for an uncomfortable day,” said Kuldeep Srivastava, scientist at IMD, adding that the average wind speed remained over 30kmph since 8.30am to late into the evening. “Delhi experienced loo during the day, and while strong surface winds controlled the temperature to a large extent, they were really hot. Relief is, however, expected from Thursday onwards, with light rain likely on Thursday and Friday under the influence of Cyclone Biparjoy, according to the India Meteorological Department (IMD). ![]() Similar weather conditions are likely to persist on Wednesday, according to the weather office. This meant that the Heat Index (HI), known colloquially as “real feel” temperature, actually stood at around 50☌ at 2.30pm, according toHT’s calculation, which employed the National Oceanic and Atmospheric Administration (NOAA) calculator to find out heat index based on relative humidity and temperature.Īs a result, the city’s power demand shot up to more than 7,000MW for the first time this year, according to State Load Dispatch Centre (SLDC) data. While at Safdarjung, Delhi’s base weather station, the maximum temperature stood at 41.8☌ hot winds of over 30kmph and a relative humidity of 37% meant that the impact of heat was exacerbated. ![]() (Vipin Kumar/HT Photo)Īlso read: Monsoon hits Bihar a day early 8 districts still reel under heat wave Visitors playing with the fountain water to beat the heat on a hot summer day at Kartavya path lawns on Tuesday. A maximum temperature hovering close to 45 degrees Celsius (☌) in parts of city, coupled with uncomfortably warm winds, and humidity meant that Delhi residents felt the onslaught of the heat even stronger than it actually was, with the “real feel” soaring to around 50☌ on Tuesday, pushing the city’s power demand to the year’s highest. ![]()
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