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18 Jul 2022 | 11:37 AM UTC

Belgium, Luxembourg: Heatwave forecast across Belgium and Luxembourg through at least July 20

Heatwave forecast across Belgium and Luxembourg through at least July 20. Transport and power disruptions possible.

Warning

Event

Forecast models indicate that a heatwave will persist across Belgium and Luxembourg through at least July 20. Temperatures could reach as high as 35-40 C (95-104 F) in parts of the affected countries July 18-19 before a slight moderation of temperatures July 20. Many shops across Belgium have announced that they will close early July 18-19 due to the forecast heat. Operators have also canceled dozens of rail services across parts of Belgium due to the severe heat. In Luxembourg, authorities in the municipality of Kayl have brought in restrictions on water usage due to low water supply; other municipal authorities may take similar measures over the coming days.

As of July 18, the Royal Meteorological Institue of Belgium (RMI) has issued orange heat warnings (the middle level on a three-tier scale) across the country July 18-19. MeteoLux has issued orange extreme heat warnings across southern Luxembourg, yellow extreme heat warnings across northern Luxembourg July 18, and orange extreme heat warnings across the whole country July 19. Officials could upgrade or expand the alerts over the coming days.

Hazardous Conditions
The extended period of oppressive heat and dry conditions may produce ideal circumstances for additional wildfire growth throughout the region. Heatwaves also 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 during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers being hospitalized for dehydration.

Transport and Utilities
Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. 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 regional airports, 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 water that is bottled or 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.

Resources

Belgium Royal Meteorological Institute (RMI)
MeteoLux