An overturned vehicle is seen on a beach at Sozopoli village in Halkidiki region, northern Greece, Thursday, July 11, 2019. A powerful storm hit northern Greece late Wednesday. (Giannis Moisiadis/InTime News via AP)

Two men search in debris after a storm at Nea Plagia village in Halkidiki region, northern Greece on Thursday, July 11, 2019. A powerful storm hit the northern Halkidiki region late Wednesday, toppling trees and power pylons, cutting power and blocking roads. (Giannis Moisiadis/InTime News via AP)

A man rides a bicycle among debris after a storm at Nea Plagia village in Halkidiki region, northern Greece, Thursday, July 11, 2019. A powerful storm hit the northern Halkidiki region late Wednesday. (Giannis Moisiadis/InTime News via AP) (Giannis Moisiadis/InTime News via AP)

A car is seen under an outdoor shop's lean-to roof after a storm at Nea Plagia village in Halkidiki region, northern Greece on Thursday, July 11, 2019. A powerful storm hit the northern Halkidiki region late Wednesday. (Giannis Moisiadis/InTime News via AP)

Debris are seen after a storm on a beach at Vergia village in Halkidiki region, northern Greece on Thursday, July 11, 2019. A powerful storm hit the northern Halkidiki region late Wednesday. (Giannis Moisiadis/InTime News via AP)

People look a damaged restaurant after a storm at Nea Plagia village in Halkidiki region, northern Greece on Thursday, July 11, 2019. A child and his mother died when they hit by the outdoor restaurant's lean-to roof that collapsed. A powerful storm hit the northern Halkidiki region late Wednesday. (Giannis Moisiadis/InTime News via AP)

An overturned vehicle is seen on a beach at Sozopoli village in Halkidiki region, northern Greece on Thursday, July 11, 2019. Two people were killed when high winds overturned their recreational vehicle. A powerful storm hit the northern Halkidiki region late Wednesday. (Giannis Moisiadis/InTime News via AP)

A caravan overturned by strong winds lies on a beach where a storm killed a Czech couple in Nea Plagia, in Chalkidiki, Northern Greece, on July 11, 2019. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A caravan overturned by strong winds lies on a beach where a storm killed a Czech couple in Nea Plagia, in Chalkidiki, Northern Greece, on July 11, 2019. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows a car crushed by fallen trees after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows damaged umbrellas and lounge chairs on a beach after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows damaged umbrellas and lounge chairs on a beach after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows the tavern where a woman from Romania and her child died when the roof caved in after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows the tavern where a woman from Romania and her child died when the roof caved in after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A man gathers damaged umbrellas on a beach after a storm in Nea Plagia, in Chalkidiki, Northern Greece, on July 11, 2019. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows damaged beach bars after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A man walks between broken trees after a storm in Nea Plagia, in Chalkidiki, Northern Greece, on July 11, 2019. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

Tourists walk past a fallen roof coverd in solar panels after a storm in Nea Plagia, in Chalkidiki, Northern Greece, on July 11, 2019. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows broken trees after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows broken trees fallen on cars after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

A picture taken on July 11, 2019 shows motorcycles on a beach after a storm in Nea Plagia, in Chalkidiki, Northern Greece. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

Fire fighters cut down a fallen tree after a storm in Nea Plagia, in Chalkidiki, Northern Greece on July 11, 2019. - Tornadoes and violent hailstorms killed six tourists in northern Greece late on July 10, 2019, police said. Dozens more were injured when strong winds hit the region of Halkidiki, near the city of Thessaloniki, authorities added. (Photo by Sakis MITROLIDIS / AFP)

Terrian Jones reacts as she feels something moving in the water at her feet as she carries Drew and Chance Furlough to their mother on Belfast Street in New Orleans during flooding from a storm in the Gulf Mexico that dumped lots of rain Wednesday, July 10, 2019. (AP Photo/Matthew Hinton), APTOPIX