High Heat Wave, Yellow Alert Issued, Delhi May Touch 46 Degrees!

The Northwest states of India have been recording higher than normal temperatures since March last week, with weather experts attributing it to absence of active Western Disturbances over north India and any major system over south India.

Amidst the daily rising temperature and extreme heat wave, Delhi is predicted to see a jump of two to three degrees Celsius. The nat’l capital had recorded a maximum temperature of 43.2 degrees Celsius on April 21, 2017, just 2 degrees less than the all-time high maximum temperature which was 45.6 degrees on April 29, 1941.

As per the India Meteorological Department  (IMD), Delhi is expected to breach the 42-degree mark today and soar to 44 degrees Celsius by Thursday. While, the maximum temperature may even leap to 46 degrees Celsius in parts of Delhi, due to which a yellow alert warning of a heatwave spell in the national capital starting April 28 has been issued.

The India Meteorological Department (IMD) uses four colour codes for weather warnings – green (no action needed), yellow (watch and stay updated), orange (be prepared) and red (take action). The IMD said the heatwave could lead to “moderate” health concerns for vulnerable people – infants, elderly, people with chronic diseases – in affected areas, hence people of these regions should avoid heat exposure, wear lightweight, light-coloured, loose, cotton clothes and cover the head by use of cloth, hat or umbrella etc.

Delhi has recorded eight heatwave days in April this year, the maximum since 11 such days witnessed in the month in 2010. Though a partly cloudy sky, light rain, and a dust storm with winds up to 50 kmph have been predicted for Friday, which may provide a temporary respite. The region had got some respite last week due to cloudy weather due to the influence of a Western Disturbance over Afghanistan.

On the other hand, for the plains, a heatwave is declared when the maximum temperature is over 40 degrees Celsius and at least 4.5 notches above normal, whereas a severe heatwave is declared if the departure from normal temperature is more than 6.4 notches, according to the IMD. India recorded its warmest March in 122 years with a severe heatwave scorching large swathes of the country during the month. Parts of the country are also seeing wheat yields drop by up to 35 percent due to the unseasonal heat. A heatwave will sweep large swathes of India over the next 4-5 days, extending from the west and northwest India to the east, weather officials warned on Tuesday, as an unusual heat blast hitting the country since last month seems set to intensify.

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