Yiannis Artopios

Larissa, the capital and largest city of the Thessaly region, is on high alert as the level of the Pinios River rose 10 meters in places overnight.

Severe flooding has been reported in some of the city's suburbs while the city center remains unaffected.

Police has arrested two people in connection with the wildfires that started near the town of Avlonas, north of Attica, on Thursday.

Three fires broke out within three hours in the area. Two of them were extinguished while the third in the Agios Georgios area is ongoing.

The wildfire at Mount Parnitha in Attica has spread to the mountain's national forest area, the Fire Brigade's spokesperson Yiannis Artopios announced late Wednesday afternoon.

The wildfire tearing through southern Viotia and West Attica since Monday has reached the outskirts of the town of Megara, with local officials appealing for assistance.

Two major wildfires were burning west of Athens for a second day in a row Tuesday, burning dozens of houses, animals and threatening an oil refinery late at night, authorities said.

Starting in Attica Monday, the fires have spread into the regional units of Corinthia and Viotia, burning mostly through forestland, but also farmland, authorities said.

Water-dumping aircraft took off at first light on Tuesday to help dozens of ground crews and mobile units battle three wildfires in the regions of Attica, Corinth and Viotia for a second day, as strong winds and high temperatures continued to exacerbate conditions.