India: Severe heatwave to persist in northwestern regions through April 15

Event

A heatwave is forecast to persist across much of northwestern India through at least April 15. As of April 11, the India Meteorological Department has issued red (highest level on a three-tier scale) warnings across western Rajasthan State and orange warnings over Haryana, Punjab, and the rest of Rajasthan states as well as the National Capital Territory of Delhi April 11. Orange warnings are in effect over Rajasthan State April 12-15. Yellow heatwave warnings are in place across the rest of the affected area through at least April 15. Maximum temperatures have remained around 6-10 C (10.8-18 F) above normal over the recent days. A slight fall in temperature of 2-3 C (3.6-5.4 F) is forecast from April 12. Authorities will likely amend advisories as weather conditions change over the coming days.

Hazardous Conditions
The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the region. Heatwaves pose a threat to vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion. Relatively healthy individuals, especially those working outdoors or using mass transit, may also face health risks during significant heatwaves. The lack of air conditioning and cramped vehicles, particularly during rush hour, may lead to dehydration and other health issues in some passengers. The extended period of oppressive heat and dry conditions may lead to wildfires.

Transport and Utilities
Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speed. Road surface damage is also possible, and overheated vehicles may worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur as very high temperatures put more stress on engines, making tire blowouts more common. Major flight disruptions are unlikely at airports in the region, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.

Advice

Monitor local media for weather updates and related advisories. During heatwaves, remain indoors in air conditioning when possible. If outdoor activities are necessary, frequently rest in shaded areas; avoid activity during the hottest times of the day. Stay well hydrated by drinking plenty of fluids. Avoid alcoholic beverages, which are dehydrating; drink bottled water or water that has been boiled. Wear loose-fitting, light-colored clothing. Cotton fabrics are more cooling than synthetics. Promptly seek medical attention if signs of heat exhaustion or heat stroke develop. Charge battery-powered devices in case prolonged electricity outages occur. Reconfirm ground and rail transport services.

Resources

India Meteorological Department