An aerial picture taken with a drone shows a flooded area and the swollen Danube River in Kisoroszi, Hungary, Wednesday, Sept. 18, 2024. (Gergely Janossy/MTI via AP)

This satellite image released by Maxar Technologies shows debris and mud after heavy rains and flooding in Stronie Slaskie, Poland, Tuesday, Sept. 17, 2024. (Satellite image ©2024 Maxar Technologies via AP)

On this handout photo provided by the State Fire Service of Poland, a firefighter writes "Zakaz" (Entry prohibited), on a building damaged by following heavy flooding in the town of Stronie Slaskie, southwestern Poland, Wednesday, Sept. 18, 2024. (Tomasz Fijołek/KG PSP via AP)

People take photos of rising waters on the banks of the River Danube, in Bratislava, Slovakia, Tuesday, Sept. 17, 2024. (AP Photo/Tomas Hrivnak)

This handout photo provided by the Polish fire department, shows firefighters pump water and mud from city streets and help clean the city of Głogow that was hit by a high flood wave, in Głogow, southwestern Poland, on Wednesday, Sept. 18, 2024. (KG PSP via AP)

An old tram car is parked in flooded area near the Danube river in Bratislava, Slovakia, Wednesday, Sept. 18, 2024. (AP Photo/Darko Bandic)

A caffe is seen damaged after the high flood waves passed through the town, in Nysa, southwestern Poland, on Wednesday, Sept. 18, 2024. (AP Photo/Krzysztof Zatycki)

This handout photo provided by the Polish fire department, shows firefighters removing piles of debris dumped in the streets by high flood wave that is passing through southwestern Poland, in Glucholazy, Poland, on Tuesday, Sept. 17, 2024. ( Marcin Muskala/KG PSP via AP)

A view of a flooded area near the Danube river in Bratislava, Slovakia, Wednesday, Sept. 18, 2024. (AP Photo/Darko Bandic)

On this handout photo provided by the State Fire Service of Poland, firefighters inspecting safety of houses following heavy flooding in the town of Stronie Slaskie, southwestern Poland, Wednesday, Sept. 18, 2024. (Tomasz Fijołek/KG PSP via AP)

An aerial view of a flooded neighbourhood in Bohumin, Czech Republic, Tuesday, Sept. 17, 2024. (AP Photo/Darko Bandic)

Chicken stand on the rooftop of a garage to shelter themselves from floods in Ostrava, Czech Republic, Monday, Sept. 16, 2024. (AP Photo/Darko Bandic)

On this handout photo provided by the State Fire Service of Poland, firefighters inspecting safety of houses following heavy flooding in the town of Stronie Slaskie, southwestern Poland, Wednesday, Sept. 18, 2024. (Tomasz Fijołek/KG PSP via AP)

Residents paddle through a flooded street in Bohumin, Czech Republic, Tuesday, Sept. 17, 2024. (AP Photo/Darko Bandic)

This satellite image released by Maxar Technologies shows flooded fields and damaged homes after record rains along the Biala Ladecka River in Stronie Slaskie, Poland, Tuesday, Sept. 17, 2024. (Satellite image ©2024 Maxar Technologies via AP)

This satellite image released by Maxar Technologies shows floodwaters and debris after record rains in Glucholazy, Poland, Tuesday, Sept. 17, 2024. (Satellite image ©2024 Maxar Technologies via AP)

Geese stand on an outdoor table in a flooded neighbourhood in Ostrava, Czech Republic, Tuesday, Sept. 17, 2024. (AP Photo/Darko Bandic)

In this photo released by the Romanian Emergency Services Galati (ISU Galati), a rescuer carries a woman in Pechea, Romania, Saturday, Sept. 14, 2024 after torrential rainstorms left scores of people stranded in flooded areas. (Romanian Emergency Services - ISU Galati via AP)

A cyclist looks at Donaukanal channel flood its banks at Urania observatory in central Vienna, Austria, Sunday, Sept. 15, 2024. (AP Photo/Heinz-Peter Bader)

This satellite image released by Maxar Technologies shows flooded homes and fields following record rains in Ostrava, Czech Republic, Tuesday, Sept. 17, 2024. (Satellite image ©2024 Maxar Technologies via AP)