The National Weather Service reported that investigators have concluded that a tornado with an estimated speed of 100-110 mph caused significant damage to the city of Grove City, just south of Colombia. The National Weather Service sent a storm-damage survey team to Grove City and announced before 11 am Wednesday that the high winds were an EF1 tornado. “Our survey team has preliminary determined that an EF1 tornado with estimated wind speeds between 100-110 MPH was responsible for damage in the Grove City, near Ohio”. http://t.co/uDssG5T5DK EF1 is towards the low end of the scale the National Weather Service uses to categorize tornadoes with EF5 being the most severe with winds reaching 200 mph. The tornado in Grove City was nearly classified as a EF2 as winds were almost up to 111 mph. As a result of the extreme weather in Grove City Ohio, 14,535 Ohio residents were without power as of Wednesday morning. http://www.outaemap.aepohio.co...