Question: The tornado outbreak of May 4–6 2007 was a major and damaging tornado outbreak that significantly affected portions of the Central United States, about how much of the city of Greensburg in Kiowa County was destroyed by an EF5 tornado, the first of such intensity since the 1999 Bridge Creek–Moore tornado?
Context: The 1999 Bridge Creek–Moore tornado (locally referred to as the May 3 tornado) was a very powerful F5 tornado in which the highest wind speeds ever measured globally, 301 mph , were recorded by a Doppler on Wheels (DOW) radar.  The tornado devastated southern portions of Oklahoma City, Oklahoma, along with surrounding suburbs and towns during the early evening of May 3, 1999.  Throughout its 85-minute existence, the tornado covered 38 mi , destroying thousands of homes, killing 36 people (plus an additional five indirectly), and leaving US$1 billion in damage, ranking it as the fifth-costliest on record, not accounting for inflation. The tornado outbreak of January 21–23, 2017 was a prolific and deadly winter tornado outbreak that occurred across the Southeast United States.  Lasting just under two days, the outbreak produced a total of 81 tornadoes, cementing its status as the second-largest January tornado outbreak and the third-largest winter tornado outbreak since 1950.  Furthermore, it was the largest outbreak on record in Georgia with 42 tornadoes confirmed in the state.  The most significant tornadoes were three EF3s that heavily damaged or destroyed portions of Hattiesburg, Mississippi, and Albany and Adel, Georgia.  A total of 20 people were killed by tornadoes—mainly during the pre-dawn hours of the outbreak—making it the second-deadliest outbreak in January since 1950, behind the 1969 Hazlehurst, Mississippi tornado outbreak that killed 32 people.  In the aftermath of the outbreak, relief organizations assisted in clean-up and aid distribution.  Total economic losses from the event reached at least $1.3 billion (2017 USD). The tornado outbreak of May 4–6 2007 was a major and damaging tornado outbreak that significantly affected portions of the Central United States.  The most destructive tornado in the outbreak occurred on the evening of May 4 in western Kansas, where about 95% of the city of Greensburg in Kiowa County was destroyed by an EF5 tornado, the first of such intensity since the 1999 Bridge Creek–Moore tornado.  The supercell killed 13 people, including 11 in Greensburg and two from separate tornadoes.  At least 60 people were injured in Greensburg alone.  It was the strongest tornado of an outbreak which included several other tornadoes reported across Oklahoma, Colorado, Kansas and South Dakota that occurred on the same night. The 1932 Deep South tornado outbreak was a deadly tornado outbreak that struck the Southern United States on March 21–22, 1932.  At least 36 tornadoes—including 27 killers and several long-lived tornado families—struck the Deep South, killing more than 330 people and injuring 2,141.  Tornadoes affected areas from Mississippi north to Illinois and east to South Carolina, but Alabama was hardest hit, with 268 fatalities; the outbreak is considered to be the deadliest ever in that U.S. state, and among the worst ever in the United States, trailing only the Tri-State Tornado outbreak in 1925, with 747 fatalities, and the Tupelo-Gainesville outbreak in 1936, with 454 fatalities.  The 1932 outbreak produced 10 violent tornadoes, classified F4 or F5 on the Fujita scale of tornado intensity, eight of which occurred in Alabama alone, and is surpassed only by the March 1952 tornado outbreak, with 11 violent tornadoes; the 2011 Super Outbreak, with 15; the 1965 Palm Sunday tornado outbreak, with 17; and the 1974 Super Outbreak, with 30. The April 20–22, 1912 tornado outbreak was a large tornado outbreak that affected portions of the High Plains, the Upper Midwest, and the Southern United States, including portions of the Dallas–Fort Worth metroplex, from April 20–22, 1912.  The severe-weather event produced at least 31 tornadoes, at least nine—and possibly 10 or more—of which were violent tornadoes, all of which rated F4 on the Fujita scale.  Powerful tornado activity was distributed from the Great Plains to South Carolina.  The first day of the outbreak occurred on April 20 and produced numerous strong to violent tornadoes across parts of North Texas, Oklahoma, and Kansas.  A second day of intense tornadoes occurred on April 21, with several strong to violent tornadoes across Illinois and Indiana.  The final day, April 22, produced an F4 tornado in Georgia as well.  The entire outbreak killed 56 people, and was followed days later by another intense tornado outbreak on April 27.  That outbreak killed about 40 people, mostly in Oklahoma.  Both outbreaks produced a combined total of nine F4 tornadoes in Oklahoma alone. The Mid-June 1992 tornado outbreak was one of the largest tornado outbreaks on record, affecting portions of the Central United States from June 14 to June 18, 1992.  The outbreak began on June 14 when six tornadoes touched down in Colorado and Idaho.  Fifty-eight tornadoes were reported across portions of the Great Plains on June 15, and 65 more were reported over much of the central U.S. on June 16.  The 123 tornadoes that touched down on June 15–16 make that two-day span the 5th largest two-day tornado outbreak in U.S. history behind the 1974 Super Outbreak, the May 2004 tornado outbreak sequence, the April 14–16, 2011 tornado outbreak, and the 2011 Super Outbreak.  Twenty-eight more tornadoes touched down on June 17, and 13 more touched down on June 18, giving this outbreak 170 confirmed tornadoes. The tornado outbreak of January 1–2, 2006, was one of the largest tornado outbreaks ever recorded in the month of January behind the January 2008 tornado outbreak sequence the January 12–13, 2006, tornadoes, the January 17–18, 1999 tornado outbreak, the January 21-23, 2017 tornado outbreak, and the January 21–23, 1999 tornado outbreak.  The outbreak affected much of the Central and Southern United States and produced 20 tornadoes.  The tornadoes caused considerable damage in the states of Kentucky and Georgia.  There were no tornado related fatalities and only minor injuries were reported. The tornado outbreak of March 6–7, 2017 was a widespread severe weather and tornado outbreak that affected portions of the Midwestern United States in the overnight hours of March 6–7.  Occurring just days after a deadly and more significant event across similar areas just a week prior, this particular outbreak led to 63 tornadoes within a 9⁄ -hour period as a quasi-linear convective system and discrete supercell thunderstorms traversed the region.  The most notable aspect of the outbreak was an EF3 tornado that damaged or destroyed hundreds of structures within Oak Grove, Missouri, injuring 12 people but causing no fatalities.  An EF1 tornado touched down near Bricelyn, the earliest known tornado on record in the state of Minnesota.  Outside of tornadic activity, hundreds of damaging wind reports and a multitude of severe hail reports were documented. The June 1974 Great Plains tornado outbreak was a significant tornado outbreak that affected portions of the southern Great Plains and the Upper Midwest on June 8, 1974.  The outbreak produced 36 tornadoes, at least 19 of them significant or intense, and is the second-deadliest June tornado event in Oklahoma history, with 16 deaths reported in the state, second only to the 35 people killed by an F4 tornado on June 12, 1942, in Oklahoma City.  The deadliest tornado of the outbreak was a powerful F4 that struck the town of Drumright in Oklahoma, killing 14 people, 12 of whom were killed at Drumright.  Another deadly and destructive F4 tornado struck the town of Emporia in Kansas, killing six more people.  The outbreak also produced two F3 tornadoes in the Tulsa metropolitan area that killed two people and, combined with flooding, produced the costliest natural disaster in that city's history up to that time—a disaster worth $30,000,000 (1974 USD).  Additionally, the outbreak produced non-tornadic winds in the city which reached 100 kn (115 mi/h ) for several minutes.  In addition to confirmed tornadoes, a possible tornado occurred at 8:15 p.m. CST 5 mi south of Cullison in Kansas, producing intermittent damage, but is not officially listed as a tornado. The May 1960 tornado outbreak sequence was a large tornado outbreak sequence that affected the southeast High Plains, the southern Ozarks, and other parts of the Midwestern and Southern United States on May 4–6, 1960.  The severe-weather event produced at least 71 confirmed tornadoes, including five violent tornadoes in the U.S. state of Oklahoma.  Major tornado activity began on the afternoon of May 4, with strong tornadoes affecting the Red River Valley and the Dallas-Fort Worth Metroplex.  Two F4 tornadoes struck parts of south Oklahoma, causing significant damage to the Konawa and Soper areas.  In all, at least 22 tornadoes formed between the early afternoon and late evening hours, with two more tornadoes forming early on May 5, shortly after midnight local time.  A much more significant tornado outbreak began on the afternoon of May 5 and continued overnight, spreading from eastern Oklahoma into portions of south Missouri and Central Arkansas.  At least 35 tornadoes developed between 6:00 a.m. CST on May 5–6, including a long-tracked F5 that struck rural areas in Northeastern Oklahoma and killed five people.  Two other F4 tornadoes killed 21 people in and near Sequoyah County in the eastern portion of the state.  Other strong tornadoes affected the Little Rock metropolitan area early on May 6 in Arkansas.  In all, the tornado outbreak sequence killed 33 people and injured 302.
Answer: 95%