Heavy rains flood roads in the Khon Kaen municipality on Sunday morning. (Photo by Jakkrapan Natanri)

Several northeastern provinces were hit by heavy downpours on Sunday and weather authorities have warned of more summer storms in several other parts of the country until Wednesday.

Strong winds and heavy rains flooded some roads in Khon Kaen municipality on Sunday morning and some districts in Udon Thani, including the city, were battered by downpours for hours.

Areas at risk of summer storms and strong winds as of Sunday. (Meteorological Department photo)

Heavy rains were reported in other areas, including Maha Sarakham, Loei and Sakhon Nakhon.