torre126/tornado-structure-data huggingface dataset:
Episode narrative: Several strong to severe thunderstorms moved into eastern Missouri in the afternoon hours of April 15th. These storms were initially producing copious large hail, but rapidly transitioned into tornadic storms. The first tornado was associated with a supercell ahead of a congealing line of convection moving rapidly toward the Mississippi River. A portion of this line of storms rapidly surged eastward, resulting in numerous tornadoes in Jefferson county in Missouri, and Monroe, Madison, St. Clair, and Washington counties in Illinois. In total, 12 tornadoes have been identified, including 3 EF-1s, 6 EF-0s, and 3 tornadoes of unknown intensity that produced no damage.

Tornado event in MONROE County, ILLINOIS
Start: 15-APR-23 17:39:00
End: 15-APR-23 17:46:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down at 6:39 PM CDT just east of intersection of Harris Road and B Road and tracked to the east northeast. There was some minor roof damage to a couple of outbuildings before the tornado crossed Bluff Road, around 2.6 miles south southwest of Valmeyer. For the remainder of the tornado path the damage was mostly to trees. However, a house sustained minor roof damage on Deer Hill Road, about 2.4 miles southeast of Valmeyer. Then the tornado lifted and dissipated around 6:46 PM CDT. Overall the tornado was rated EF0 with a max wind speed of 85 mph. The tornado path length is 4.97 miles with a max path width of 100 yards. No deaths or injuries were reported.

Tornado event in MONROE County, ILLINOIS
Start: 15-APR-23 17:43:00
End: 15-APR-23 17:44:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado briefly touched down in the Mississippi river bottoms on the northwest side of Columbia, IL. The only evidence of this tornado was a video provided via local media. Duration was likely less than 1 minute, no damage or injuries. The tornado was rated EFU with an estimated path length of 0.34 miles and an estimated path width of 25 yards.
Episode narrative: A closed low pressure system moved slowly across the northern Plains and spawned multiple tornadoes across north central Nebraska.

Tornado event in HOLT County, NEBRASKA
Start: 12-MAY-23 15:00:00
End: 12-MAY-23 15:07:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado touched down in far northern Wheeler County, quickly strengthening and caused extensive damage to shelter belts.  Debarking was observed in trees along the county line.  This tornado continued northwestward into Holt County, damaging additional trees, farm outbuildings, and pivot systems.
Episode narrative: Early morning storms associated with a weakening low resulted in one stronger cell in central Iowa producing quarter sized hail before dawn. Later in the day, a deepening low across the central plains lifted into Iowa with storms developing along a dry line in the evening. These storms produced hail up to baseball sized, along with a brief tornado remained rural and did not cause any damage. Additional convection was reinvigorated overnight thanks to the low level et, but remained sub severe. Areas that received multiple rounds of storms saw two to three inches of much needed rain.

Tornado event in CRAWFORD County, IOWA
Start: 19-APR-23 18:56:00
End: 19-APR-23 18:59:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Storm Chasers had video of this tornado as it remained in rural areas of Crawford county between Deloit and Schleswig.  The tornado did not impact any damage indicators, hence the EFU rating.
Episode narrative: During the afternoon and evening hours of April 5, a low pressure system, moving northeast from Minnesota into Ontario, dragged a trailing cold front through the Lower Ohio Valley. This produced a line of severe storms that moved west to east over southern Indiana, resulting in multiple reports of tree damage, structural damage, and one tornado in Perry County.

Tornado event in PERRY County, INDIANA
Start: 05-APR-23 15:14:00
End: 05-APR-23 15:15:00
Direct deaths: 0
Event narrative: The National Weather Service Louisville confirmed an EF1 tornado in Eastern Perry County Indiana, near Leopold, from severe storms on Wednesday afternoon, April 5. The tornado touched down in a hilly forested area, along Leopold Oriole Road, 0.2 miles north of the Leopold town square. The twister started off as an EF0 80  mph in the forested area with a few snapped and uprooted trees.  The tornado rapidly increased to a 95 mph EF1 striking a very well  built 45 by 125 barn with extra hurricane clips, nails and bolts.  The foundation of the barn through the roof bracing was one of the  best new built barns this survey team has ever seen.  

A large portion of the roof was thrown over 100 yards to the north  northeast to a easterly direction. There were numerous boards impaled  into the ground and some of the metal sheeting was thrown 200 yards,  wrapping around a large maple tree. NWS drone footage showed a few  more pieces of the roof were thrown into the neighbor's pond, which  is about 350 yards away. Residents at the home felt their house shake  for about 15 seconds and their ears were popping.  

Adjacent to the barn was a tractor tire that was moved 25 yards to the  northwest with no noticeable skid marks with the tire. The foundation  of the barn was pulled northeastward slightly, and a large pick up  trailer fully loaded with supplies in the barn moved about 6 inches. 

The drone showed a large area of snapped and uprooted trees just  northeast of the home in a forested area. The drone showed no damage  beyond that tree damage across a farmers field.
Episode narrative: Several strong to severe thunderstorms moved into eastern Missouri in the afternoon hours of April 15th. These storms were initially producing copious large hail, but rapidly transitioned into tornadic storms. The first tornado was associated with a supercell ahead of a congealing line of convection moving rapidly toward the Mississippi River. A portion of this line of storms rapidly surged eastward, resulting in numerous tornadoes in Jefferson county in Missouri, and Monroe, Madison, St. Clair, and Washington counties in Illinois. In total, 12 tornadoes have been identified, including 3 EF-1s, 6 EF-0s, and 3 tornadoes of unknown intensity that produced no damage.

Tornado event in ST. CLAIR County, ILLINOIS
Start: 15-APR-23 17:59:00
End: 15-APR-23 18:00:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado touched down at 6:59 PM CDT on Walnut Lane and tracked to the east northeast along Signal Hill Boulevard. It caused damage to numerous trees and minor structural damage. Overall, the tornado was rated EF0 with max wind speed of 84 mph. The path length was 0.58 miles and a max path width of 100 yards. No deaths or injuries were reported.

Tornado event in MADISON County, ILLINOIS
Start: 15-APR-23 18:01:00
End: 15-APR-23 18:02:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado briefly touched down just to the west of Collinsville, IL. The only evidence of this tornado was a video provided via local media. Duration was likely less than 1 minute, no damage or injuries. The tornado was rated EFU with an estimated path length of 0.16 miles and an estimated path width of 25 yards.
Episode narrative: Showers and thunderstorms overspread the region as a strong low pressure system moved through the Ohio Valley.

Tornado event in FAIRFIELD County, OHIO
Start: 05-APR-23 16:33:00
End: 05-APR-23 16:38:00
Direct deaths: 0
Property damage: 250.00K
Event narrative: The first sign of tornadic damage was observed along Election House Road NW, where an outbuilding lost several metal panels from the roof. These panels were found embedded within the trees of the neighboring property across the road. Additional tree damage and light structure damage was observed there. The tornado then crossed Rainbow Drive NW, with a clear path of tree damage observed on both sides of the road. Damage of similar intensity was found on the west and east sides of Lancaster Kirkersville Rd NW. The tornado then crossed Coonpath Road NW, between Stringtown Road NW and Lancaster Kirkersville Rd NW. Additional minor structure damage was observed at several properties along Stringtown Road NW, north of Coonpath Road NE. Additional tree damage was observed along the northern portions of the Pleasant Valley Golf Course. Intensity remained weak, but a clear path of damage continued to be found along several properties on Tschopp Rd NE. The tornado then crossed Lancaster Newark Road NE with visible tree damage on both sides of the roadway. The final section of tree damage was located along Old Mill Road NE. No additional damage was observed east of this location so the tornado likely weakened and dissipated before crossing Old Millersport Road NE. Throughout the path, the intensity of the tornado did not appear to change drastically, with similarly observed damage from start to finish and maximum winds estimated to be 80 mph.
Episode narrative: Several strong to severe thunderstorms moved into eastern Missouri in the afternoon hours of April 15th. These storms were initially producing copious large hail, but rapidly transitioned into tornadic storms. The first tornado was associated with a supercell ahead of a congealing line of convection moving rapidly toward the Mississippi River. A portion of this line of storms rapidly surged eastward, resulting in numerous tornadoes in Jefferson county in Missouri, and Monroe, Madison, St. Clair, and Washington counties in Illinois. In total, 12 tornadoes have been identified, including 3 EF-1s, 6 EF-0s, and 3 tornadoes of unknown intensity that produced no damage.

Tornado event in WASHINGTON County, ILLINOIS
Start: 15-APR-23 18:33:00
End: 15-APR-23 18:34:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado briefly touched down about a third of a mile north of Covington, IL. The only evidence of this tornado was a video provided via social media. Duration was likely less than 1 minute, no damage or injuries. The tornado was rated EFU with an estimated path length of 0.17 miles and an estimated path width of 50 yards.

Tornado event in ST. CLAIR County, ILLINOIS
Start: 15-APR-23 18:03:00
End: 15-APR-23 18:04:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down at 7:03 PM CDT at the intersection of West E Street and N 7th Street and tracked to the north northeast. Damage was limited to trees and power lines. The tornado lifted and dissipated on Anna Street just east of Helen Street. The tornado was rated EF0 with a max wind speed of 85 mph. The path length was 1.12 miles and a max path width of 90 yards. No deaths or injuries were reported.
Episode narrative: A lone supercell thunderstorm moved from south central Kansas into central Kansas during the afternoon and evening of April 19th, 2023.  The cyclic storm produced very large hail up to 4 inches in diameter and numerous tornadoes across Chase county, Kansas.   Eight tornadoes formed from the supercell with the strongest producing EF2 damage.

Tornado event in CHASE County, KANSAS
Start: 19-APR-23 19:31:00
End: 19-APR-23 19:37:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: The was the fifth tornado of the event. It tracked just north of Chase County Lake and damage was limited to trees and small outbuildings.

Tornado event in CHASE County, KANSAS
Start: 19-APR-23 19:55:00
End: 19-APR-23 20:04:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This was the ninth and final tornado of the event. It caused damage to transmission powerlines before crossing into Topeka's County Warning Area and causing minor damage to a home.
Episode narrative: Showers and thunderstorms overspread the region as a strong low pressure system moved through the Ohio Valley.

Tornado event in FAIRFIELD County, OHIO
Start: 05-APR-23 16:39:00
End: 05-APR-23 16:41:00
Direct deaths: 0
Property damage: 250.00K
Event narrative: Tree and light structure damage was first observed at a property to the west of Lancaster Thornville Road NE, shortly after entering the town of Pleasantville. Due to the expansive fields southwest of town, this is believed to be the starting point for this brief and weak tornado. The tornado cut a path across South Main Street, through the southern portions of the town. Along South Main Street, lofted metal roof panels were observed scattered in nearby powerlines and trees. Farther to the east, between South Main Street and Lincoln Avenue, numerous trees were either snapped or uprooted. Light structure damage was also observed on Pleasant Court. The tornado entered nearby fields to the east of Lincoln Avenue. The final observed sign of damage was at a property south of Pleasantville Road NW, near the water tower, and this is where the tornado is believed to have dissipated. While this one mile long tornado is considered to be on the weaker side, a path of convergent damage was visible through the southern portions of Pleasantville. The strongest portion of the tornado was likely along South Main Street, with maximum estimated winds of 85 mph.
Episode narrative: Showers and thunderstorms overspread the area during the early morning hours ahead of a strong low pressure system and an associated cold front that were moving through the Ohio Valley.

Tornado event in MIAMI County, OHIO
Start: 01-APR-23 00:02:00
End: 01-APR-23 00:06:00
Direct deaths: 0
Property damage: 50.00K
Event narrative: The tornado first touched down south of W Sugar Grove Circle Hill Road. It then tracked east through Sugar Grove before ending with damage near Mowry Road. Reports and photo evidence from numerous citizens in the area, in addition to emergency management officials, helped determine the extent of this tornado. Maximum winds were estimated to be around 80 mph.
Episode narrative: A longwave trough exited the Intermountain West into the Central and Southern Plains on April 15th, which reinforced a cold front southeast into Northeast Texas, Southeast Oklahoma, and Southwest Arkansas during the afternoon. Hot and humid air spread north across the region from the Gulf of Mexico ahead of the front with the northward advance of a warm front, with temperatures climbing into the upper 80s and lower 90s areawide. These abnormally hot and humid conditions resulted in moderate to very unstable conditions ahead of the front, as large scale ascent increased ahead of the ejecting trough along and just ahead of the approaching cold front. As a result, scattered to numerous strong to severe thunderstorms developed during the afternoon and evening hours across Northeast Texas, Southwest Arkansas, and North Louisiana, and produced multiple instances of damaging winds, large hail, and even an isolated tornado over Western Bienville Parish before exiting the area during the mid-evening hours.

Tornado event in BIENVILLE County, LOUISIANA
Start: 15-APR-23 17:30:00
End: 15-APR-23 17:42:00
Direct deaths: 0
Property damage: 30.00K
Event narrative: An EF-1 tornado with estimated maximum winds near 104 mph touched down west of Zeke Road just north of the intersection of Zeke Road and Highway 154 in Western Bienville Parish just southwest of Ringgold. Shortly after crossing Zeke Road while moving in an east-northeasterly direction, the tornado reached its peak estimated wind speed near 104 mph as the NWS survey team found numerous snapped softwood trees on a heavily wooded property. The tornado continued a consistent movement to the east-northeast for another quarter mile, before turning sharply to the southeast and crossing back over Highway 154. This rather atypical tornadic movement was represented quite closely in the associated radar data. Many trees were uprooted and a few were snapped as the tornado crossed Highway 154 and the team was not able to survey more damage from the ground due to lack of road access until the tornado next crossed Highway 4 near the intersection of Highway 4 and PR 537. The tornado also uprooted numerous hardwood and softwood trees here, while also snapping a few softwoods. It is possible that the tornado continued a bit farther than the endpoint represented in the survey, but the NWS survey team could not confirm this due to the lack of ground access immediately to the southeast. An overwhelming majority of the damage in this tornado was limited to trees, although throughout the path, there were a handfull of residences and structures damaged by falling trees and downed limbs. Pictures were also submitted of a funnel cloud to the west of this surveyed tornado and east of Lake Bistineau. While it is possible there was another tornado touchdown a little west of this tornado, the survey team did not have any ground access to conduct a survey in this area.
Episode narrative: During the afternoon and evening hours of April 5, a low pressure system, moving northeast from Minnesota into Ontario, dragged a trailing cold front through the Lower Ohio Valley. This produced a line of severe storms that moved west to east over central Kentucky, resulting in multiple reports of tree damage, structural damage, and four combined tornadoes in Jefferson and Meade Counties.

Tornado event in JEFFERSON County, KENTUCKY
Start: 05-APR-23 16:05:00
End: 05-APR-23 16:06:00
Direct deaths: 0
Event narrative: The National Weather Service in Louisville conducted a storm assessment survey across the Watterson Park neighborhood in Louisville. This is the area just south of the intersection of Newburg Road and Interstate 264 (Watterson Expressway). There were two tornadoes in this area separated by a clear and distinct break of about 200 yards.

The first tornado started just north of the main Post Office distribution center. The tornado touched down just northwest of the intersection of Colonel Sanders Drive and Gardiner Lane. Trees were snapped and uprooted in this area before the tornado struck the roof of Yum! Brands headquarters. The northeast side of the well-constructed  building had a substantial portion of parapet wall removed and the brick wall was partially pushed inwards. Wind speeds in this area were estimated to be 95 mph.

The tornado continued to produce tree damage, including snapped, twisted, and uprooted trees. Wind speeds were between 87 and 90 mph in this area. The tornado lifted by Robards Lane just south of Gardiner Lane.
Episode narrative: Several strong to severe thunderstorms moved into eastern Missouri in the afternoon hours of April 15th. These storms were initially producing copious large hail, but rapidly transitioned into tornadic storms. The first tornado was associated with a supercell ahead of a congealing line of convection moving rapidly toward the Mississippi River. A portion of this line of storms rapidly surged eastward, resulting in numerous tornadoes in Jefferson county in Missouri, and Monroe, Madison, St. Clair, and Washington counties in Illinois. In total, 12 tornadoes have been identified, including 3 EF-1s, 6 EF-0s, and 3 tornadoes of unknown intensity that produced no damage.

Tornado event in ST. CLAIR County, ILLINOIS
Start: 15-APR-23 18:03:00
End: 15-APR-23 18:07:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down at 7:03 PM CDT just south of the intersection of N 2nd Street and West F Street and tracked to the northeast. It initially caused minor tree and power line damage. Then as it moved through moved through the Forest Hill Drive area, it briefly intensified either snapping off or uprooting several very large trees. Several of the trees fell onto homes, causing more significant structural damage. Further to the northeast there was minor structural damage to a   couple of homes, apartment buildings and businesses. Then the tornado lifted and dissipated on Adeline Drive just west of Sierra Drive at 7:07 PM CDT. The tornado was rated EF1 with a max wind speed of 98 mph. The path length was 3.04 miles and a max path width of 200 yards. No deaths or injuries were reported.
Episode narrative: A squall line of severe thunderstorms organized over southern Illinois and moved east across southwest Indiana during the afternoon. A short-lived pocket of damaging wind accompanied this line of storms, along with a brief squall-line tornado. The squall line developed ahead of a cold front trailing south from a surface low pressure system. Diurnal heating contributed to a more unstable atmosphere ahead of the front. A deep 500 mb trough over the western high Plains was preceded by strong southwest mid-level flow of 60 knots or more, which helped organize the convection.

Tornado event in SPENCER County, INDIANA
Start: 05-APR-23 13:42:00
End: 05-APR-23 13:46:00
Direct deaths: 0
Property damage: 25.00K
Event narrative: An EF-0 tornado impacted portions of rural Spencer County southwest of Chrisney. The primary damage caused by the tornado was downing several large tree limbs, as well as snapping or uprooting a few trees. The tornado knocked down the walls of a barn near the intersection of County Road 700 North and Old US Highway 231. Peak winds were estimated near 85 mph.
Episode narrative: Strong to severe thunderstorms developed into northwestern Arkansas during the early morning hours of the 5th, ahead of and along a cold front that moved through the region. The air mass had become moderately unstable ahead of the front. Deep layer wind shear was strong, and combined with the instability, resulted in a few supercell thunderstorms developing over portions of northwestern Arkansas. One supercell produced a tornado and damaging wind in northeastern Carroll County, and another supercell produced a brief tornado in eastern Madison County. A squall line along the cold front then moved through the region. The strongest storms in the line produced hail up to quarter size.

Tornado event in MADISON County, ARKANSAS
Start: 05-APR-23 04:50:00
End: 05-APR-23 04:53:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado snapped large tree limbs and uprooted small trees. Based on this damage, maximum estimated wind in the tornado was 75 to 80 mph.

Tornado event in CARROLL County, ARKANSAS
Start: 05-APR-23 05:03:00
End: 05-APR-23 05:05:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Several people witnessed this tornado from multiple directions. The tornado appears to have occurred over open county, and a survey team could not access the area where the tornado likely occurred based on radar data and estimation from videographer positions. The tornado was therefore rated EF-unknown.