The India Meteorological Department (IMD) has introduced an experimental heat index aimed at better capturing the actual heat stress felt by people, particularly in regions like Nagpur and across Vidarbha, where perceived temperatures often exceed recorded values.
Understanding the Heat Index
The heat index provides information on the impact of humidity on high temperatures and thus gives a ‘feels-like temperature’, which can be used as an indication for human discomfort. It provides guidance towards additional care to be taken by people to reduce discomfort. Colour codes are used for the experimental heat index.
How It Works
This index combines air temperature and relative humidity to determine the human-perceived equivalent temperature. When humidity is high, the body's ability to cool itself through sweating is reduced, making the air feel hotter than it actually is. The IMD's experimental index assigns colour codes to different levels of heat stress, ranging from caution to extreme danger.
Significance for Vidarbha
Nagpur and the Vidarbha region often experience extreme heat during summer months. The experimental heat index will help residents and authorities better understand the real impact of heat waves, enabling more targeted public health advisories and preventive measures. This initiative is part of IMD's ongoing efforts to improve weather forecasting and climate services.
