SARAJEVO, June 27 (Xinhua) -- Bosnia and Herzegovina(BiH) on Saturday issued an orange heat warning across the country as temperatures are expected to reach up to 40 degrees Celsius over the next several days, while firefighters continue battling multiple fires fueled by hot and dry weather.

The Federal Hydrometeorological Institute of BiH (FHMZ) said the orange alert will remain in effect from June 27 to June 30, warning that the most dangerous period each day will be between 11:00 a.m. and 5:00 p.m. The highest temperatures are forecast to reach between 33 and 40 degrees Celsius.

The institute urged residents, particularly the elderly, young children and people with chronic illnesses, to avoid prolonged outdoor activities, stay hydrated and follow advice from health and emergency authorities.

Meanwhile, firefighters in the southern city of Mostar continued efforts to extinguish a fire that has burned for several days at a major landfill. Authorities said a new fire broke out at the site on Saturday, and firefighting operations was still underway.

In the southern city of Trebinje, a wildfire outside the city flared up again and was moving toward nearby houses, according to local fire officials.

They warned that changing winds could rapidly worsen the situation. The fire, which has been burning in inaccessible terrain since Wednesday, is believed to have been sparked by a lightning strike. ■