Updated

Temperatures have hit all-time highs in Austria and neighboring Hungary as a stubborn heat wave nears the end of its second week.

Several Austrian communities measured highs just above 40 C (104 F) for the first time Thursday. In Hungary, temperatures were fractionally lower at 40 C.

Hungarian officials have issued a heat warning, while some government ministries have relaxed dress codes. For men, that means ties and jackets can be left at home. For women, pantyhose is optional.

Croatia sent two water-dropping planes to Bosnia earlier in the week to help battle wildfires set off by drought and sweltering heat that threatened several villages. A Russian aircraft was dispatched to fight blazes in Serbia.

Temperatures also nearly broke records in Poland.