Croatia: Heatwave forecast across western regions through at least Sept. 3

Forecast models indicate that high temperatures will persist across parts of western Croatia along the Adriatic coastline through at least Sept. 3. The high temperatures could spark an increase in wildfire activity across the region and pose a health threat to the general public.

As of early Sept. 2, the State Hydrometeorological Institute (DHMZ) has issued orange high-temperature warnings across the affected area Sept. 2 and yellow high-temperature warnings across the affected area Sept. 3. Maximum temperatures of more than 33 C (91 F) and minimum temperatures of more than 25 C (77 F) are forecast Sept. 2. Officials could update and extend the coverage of the weather alerts over the coming hours and days.

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.

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.