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Weather service reports strongest tornado in Ohio since 2010

May 31, 2019 GMT
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Local volunteers on Wednesday, May 29, 2019, in Dayton Ohio, help organize relief support for victims of a tornado storm system Wednesday Tens of thousands of Ohio residents were still without power or water in the aftermath of strong tornadoes that spun through the Midwest earlier this week. (AP Photo/John Minchillo)
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Local volunteers on Wednesday, May 29, 2019, in Dayton Ohio, help organize relief support for victims of a tornado storm system Wednesday Tens of thousands of Ohio residents were still without power or water in the aftermath of strong tornadoes that spun through the Midwest earlier this week. (AP Photo/John Minchillo)

DAYTON, Ohio (AP) — The National Weather Service says one of the tornadoes that tore through western Ohio this week was the strongest in the state since 2010.

Survey teams have confirmed at least 18 tornadoes touched down in the region during storms Memorial Day evening and early Tuesday.

The Weather Service on Thursday upgraded one of three reported EF3 “severe” tornadoes to an EF4 , which signifies “devastating.” The service says the tornado that hit Brookville and swept through western Dayton had 170 mph winds.

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The state’s last EF4 was in northwest Ohio’s Wood and Ottawa counties.

Thousands of people in the Dayton area remained without power Friday. Authorities are seeking volunteers to help with clean-up efforts.

An 82-year-old man in Celina (suh-LEYE’-nuh) was killed during the storms. More than 100 people were injured.