torre126/tornado-structure-data huggingface dataset:
Episode narrative: A very active pattern set-up over Great Lakes Region and extending southward to the Deep South from June 11th through June 15th. A deep upper cyclone become entrenched over the Great Lakes Region with an active zonal flow pattern over the Deep South.  Numerous upper short waves traversed through the zonal flow which resulted in several consecutive days of severe weather across Central Alabama.

Tornado event in BARBOUR County, ALABAMA
Start: 14-JUN-23 11:09:00
End: 14-JUN-23 11:20:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: National Weather Service meteorologists surveyed damage in far eastern Barbour County and determined that it was consistent with an EF1 tornado, with maximum winds near 110 mph. The tornado touched down in a forested area between Sandy Lane west of Highway 30. The tornado quickly intensified and snapped or uprooted a number of large pine trees on the south side of Highway 30. The tornado crossed Highway 30 and uprooted another grove of pine trees and causing damage to a church. The tornado weakened slightly as it crossed US Highway 431, then rapidly intensified and caused the most significant tree damage along the path on the western banks of Barbour Creek, with snapped and uprooted trees, some of which caused major damage to a home.  The tornado continued east-northeast and crossed Paul Lee Parkway and State Docks Road, where more trees were uprooted, the side of a metal building structure was removed, and three units of an apartment complex sustained partial roof damage. The tornado then caused another area of significant tree damage between Cypress Cove Drive and Inlet Road. The tornado weakened after moving over the waters of the Walter F George Reservoir and likely dissipated.
Episode narrative: During the afternoon and evening of the 31st, a wave of severe thunderstorms produced numerous tornadoes, severe hail, extensive wind damage, and localized flooding across northern and northeastern Illinois. A total of 37 tornadoes were confirmed across the state. The NWS Chicago office tied a record for the most tornadoes to occur in a single calendar day within the office's county warning area with 22, 17 of which occurred in Illinois. One EF-2 tornado occurred in south-central Lee County and two others in northwest Indiana. Some of the more notable damage includes multiple semi trucks blown over, a garage that had been completely destroyed southeast of Amboy, and the partial roof collapse of the Apollo Theatre in Belvidere which unfortunately resulted in one fatality and 40 injuries.

Tornado event in KANE County, ILLINOIS
Start: 31-MAR-23 19:01:00
End: 31-MAR-23 19:03:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado began south of Dean St near 15th St in St Charles and tracked northeast. It passed over Boy Scout Island and the Fox River before lifting near the intersection of Stonehedge Rd and Persimmon Dr. Damage along the tornado's path consisted of several uprooted and damaged trees, downed power lines, roof shingles peeled off of houses, and a damaged HVAC unit on the roof of a construction facility.
Episode narrative: Late during the evening of June 15th, regional radar analysis showed several clusters of severe thunderstorms ongoing along the middle Red River Valley into Northeast Texas. The eastern-most cluster displayed signs of cold pool intensification and developed a bowing structure. Observational trends farther downstream favored a continued motion along the instability gradient to the southeast through midnight into the early morning hours on June 16th. Given that the background wind fields and buoyancy were still quite strong, the threat of damaging winds upwards of 75+ mph and large hail increased as the complex moved into far Northeast Texas and Northwest Louisiana just after midnight.

Farther west near the Red River, additional storm development occurred along the trailing outflow. Less organized than the eastern cluster, individual storms, including a few supercells, eventually evolved and remained semi-discrete for a few hours. Given the more cellular nature, large hail was a threat initially with the amount of instability upwards of 5000 J/kg and 60 knots of effective shear. A greater risk of damaging winds gradually evolved as storms remained organized and grew upscale overnight.

As a result, large hail up to 2+ inches in diameter eventually occurred in some storms followed by an intense bow echo, resulting in widespread severe winds and even some hurricane-force gusts, setting the stage for initiating a derecho-type event across much of Northeast Texas and North Louisiana. In addition, an isolated tornado also occurred near the Texas/Louisiana state line on the south flank of the extreme derecho winds.

Tornado event in PANOLA County, TEXAS
Start: 16-JUN-23 00:15:00
End: 16-JUN-23 00:20:00
Direct deaths: 0
Property damage: 50.00K
Event narrative: A strong line of thunderstorms moved through East Texas and Northwest Louisiana during the early morning hours on June 16th. As it moved through East Texas and into the Shreveport metro area, the storm begin to take on a bow shape, indicating that the system would likely produce strong straight line winds. As the storm reached near the Texas/Louisiana state line from Panola County into southwest Caddo Parish, it produced a brief EF-1 tornado with maximum wind gusts of 110 mph, a path width of nearly 850 yards, and path length of nearly two miles in far eastern Panola County. 

With a storm already producing widespread straight-line wind damage, it became difficult to determine what was tornadic and what was straight-line winds. It was determined that the tornado touched down to the west of County Road 322 in Panola County where a large tree fell onto a single family home. The tornado then moved to the southeast across the Texas/Louisiana state line into extreme Southwest Caddo Parish.
Episode narrative: Severe thunderstorms developed over the Texas and Oklahoma Panhandles, southwestern Kansas, and southeastern Colorado during the afternoon of the 17th, along and ahead of a cold front as a strong upper level disturbance translated into the Southern Plains. These storms organized into a surging line of severe thunderstorms as they moved east across northern Oklahoma, reaching eastern Oklahoma during the late evening. Moderately strong instability was in place ahead of the storms, and the wind fields aloft, along with the deep-layer and low-level wind shear, became strong as the upper level disturbance approached from the west. The line of thunderstorms produced widespread wind damage across eastern Oklahoma, with wind gusts in excess of 100 mph at times. Widespread damage to the utility infrastructure occurred, especially throughout counties in northeastern Oklahoma, with nearly a million people without power during the peak of the storm. Some of these outages lasted more than a week. Many trees were blown down, and widespread damage to homes and businesses occurred. A tree fell onto a manufactured home near Oilton in Creek County, killing one of the occupants and injuring three others. Three tornadoes also occurred across portions of northeastern Oklahoma, each forming on the leading edge of the squall line.

Other severe thunderstorms developed during the late evening hours of the 17th near a stationary front that stretched across northern Texas and southern Oklahoma. These storms produced damaging wind across portions of southeastern Oklahoma.

Tornado event in ROGERS County, OKLAHOMA
Start: 17-JUN-23 23:40:00
End: 17-JUN-23 23:52:00
Direct deaths: 0
Property damage: 75.00K
Event narrative: This tornado developed east of Highway 169, southwest of Oologah. It moved just south of Oologah Lake, and dissipated southwest of Foyil. The tornado uprooted and snapped numerous trees, damaged a number of homes and outbuildings, and blew down numerous power poles. Based on this damage, maximum estimated wind in the tornado was 95 to 105 mph. A tornadic debris signature was detected by KINX WSR-88D associated with this tornado.

Tornado event in ROGERS County, OKLAHOMA
Start: 17-JUN-23 23:56:00
End: 18-JUN-23 00:03:00
Direct deaths: 0
Property damage: 10.00K
Event narrative: This tornado developed near an inlet of Oologah Lake, and moved east toward Chelsea. Numerous trees were uprooted or snapped, and power poles were blown down. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.
Episode narrative: Scattered severe storms tracked across southeast Iowa during the mid-afternoon into early evening of June 24, producing large hail up to golf ball size in Van Buren County and tennis ball size hail near Ottumwa.

More organized clusters of severe storms tracked through Dubuque into far northwest IL during the evening and late night hours of June 24.  Another storm cluster moved through the Quad Cities, producing wind gusts to 70 mph at the Davenport ASOS and damage to trees and power poles.  An EF-0 tornado also tracked east along and north of I-80 near the Davenport Airport, causing sporadic minor tree and structure damage.  This storm impacted the Quad City Airshow grounds, while no visitors were present.

Tornado event in SCOTT County, IOWA
Start: 24-JUN-23 21:31:00
End: 24-JUN-23 21:45:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado developed about 2 miles east of Walcott along Interstate 80. The tornado tracked east and caused sporadic minor tree and structure damage at the Northwest Boulevard exit just north of I-80. The tornado then moved across the Davenport Airport, and caused damage to canopies, tents, and equipment, which was hosting an airshow. The tornado passed just south of the NWS office, then continued east, producing minor tree and structure damage along 210th St. The tornado followed an intermittent path of around 9.6 miles, and was on the ground intermittently for about 14 minutes. The tornado was rated EF-0, with maximum estimated winds around 75 mph. Occasional minor tree damage was also observed south of the path, due to straight line winds.
Episode narrative: The approach of an anomalously strong (for mid-June) upper-level disturbance lead to a widespread severe weather outbreak across portions of the forecast area, especially along and west of the I-35 corridor, during the afternoon into late evening of the 15th. This included the development of numerous supercell thunderstorms across the area. Despite relatively high cloud bases, strong low-level instability and sufficient low-level wind shear aided tornadic outcomes, with eleven tornadoes confirmed across western into southern Oklahoma. Numerous reports of large to very large hail, including reports of 4-inch hail in Lawton, and wind damage were received across area.

Tornado event in LOVE County, OKLAHOMA
Start: 15-JUN-23 18:26:00
End: 15-JUN-23 18:27:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A research meteorologist observed a tornado just northeast of Marietta. Some light tree damage occurred with this tornado.
Episode narrative: Severe thunderstorms developed over the Texas and Oklahoma Panhandles, southwestern Kansas, and southeastern Colorado during the afternoon of the 17th, along and ahead of a cold front as a strong upper level disturbance translated into the Southern Plains. These storms organized into a surging line of severe thunderstorms as they moved east across northern Oklahoma, reaching eastern Oklahoma during the late evening. Moderately strong instability was in place ahead of the storms, and the wind fields aloft, along with the deep-layer and low-level wind shear, became strong as the upper level disturbance approached from the west. The line of thunderstorms produced widespread wind damage across eastern Oklahoma, with wind gusts in excess of 100 mph at times. Widespread damage to the utility infrastructure occurred, especially throughout counties in northeastern Oklahoma, with nearly a million people without power during the peak of the storm. Some of these outages lasted more than a week. Many trees were blown down, and widespread damage to homes and businesses occurred. A tree fell onto a manufactured home near Oilton in Creek County, killing one of the occupants and injuring three others. Three tornadoes also occurred across portions of northeastern Oklahoma, each forming on the leading edge of the squall line.

Other severe thunderstorms developed during the late evening hours of the 17th near a stationary front that stretched across northern Texas and southern Oklahoma. These storms produced damaging wind across portions of southeastern Oklahoma.

Tornado event in MAYES County, OKLAHOMA
Start: 18-JUN-23 00:09:00
End: 18-JUN-23 00:15:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado uprooted trees, and snapped numerous large tree limbs. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.
Episode narrative: The approach of an anomalously strong (for mid-June) upper-level disturbance lead to a widespread severe weather outbreak across portions of the forecast area, especially along and west of the I-35 corridor, during the afternoon into late evening of the 15th. This included the development of numerous supercell thunderstorms across the area. Despite relatively high cloud bases, strong low-level instability and sufficient low-level wind shear aided tornadic outcomes, with eleven tornadoes confirmed across western into southern Oklahoma. Numerous reports of large to very large hail, including reports of 4-inch hail in Lawton, and wind damage were received across area.

Tornado event in STEPHENS County, OKLAHOMA
Start: 15-JUN-23 17:16:00
End: 15-JUN-23 17:21:00
Direct deaths: 0
Property damage: 150.00K
Event narrative: This tornado developed 2.6 miles southeast of Loco and moved east-southeast. Damage was confined to trees and power line poles until the tornado approached the county line where a mobile home was destroyed. The tornado did move into Jefferson County.
Episode narrative: There were two rounds of severe thunderstorms on April 4th. The first round in Illinois occurred during the morning hours.  These storms developed in eastern Iowa and moved into northwest Illinois by mid morning.  Despite the elevated nature of the storms and a very stable low level, a very strong downdraft surge occurred south of the hail core over the Illinois side of the Quad Cities metro, with the Quad City Airport ASOS measuring a wind gust near 90 MPH. Extensive damage occurred from Rock Island to Colona IL to buildings, trees and power poles, with some structures seeing ripped-off roofs. A survey team determined a brief tornadoes touched down in Moline, Colona, and near Geneseo Illinois.

Tornado event in ROCK ISLAND County, ILLINOIS
Start: 04-APR-23 08:36:00
End: 04-APR-23 08:37:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado caused sporadic damage to power poles, some trees, and some houses on its 1 mile path. Estimated max wind speeds of 105 mph.
Episode narrative: A robust mid-level short wave with a surface cold front brought scattered severe weather to our region. Severe thunderstorms in NJ developed, aided by a high shear/low CAPE environment. One supercell spawned a tornado.

Tornado event in MERCER County, NEW JERSEY
Start: 21-FEB-23 15:35:00
End: 21-FEB-23 15:41:00
Direct deaths: 0
Event narrative: Sporadic minor tree damage was observed west of Interstate 295. A continuous path of tree damage was observed near Lawrence Station Road, particularly in a housing development along Fountayne Lane. Additional tree damage and damage to roofing occurred in a housing development at Lawrence Square. Estimated maximum wind speeds in this area were 105-115 MPH. In a straight line from this damage, there was roofing damage at a residence and a commercial building as well as additional tree damage along Quaker Bridge Road. Tree damage continued at a park across the street and through the 2nd and 11th holes at the adjacent golf course. Additional sporadic tree damage occurred in residential areas east of the golf course in West Windsor Township. The last tree damage was observed near the intersection of Old Trenton Road and Village Road.
Episode narrative: Two rounds of severe thunderstorms occurred on April 4th. Round 2 of severe thunderstorms arrived during the late afternoon, with all modes of severe weather seen. Most notably, an EF1 tornado developed near Industry IL, and tracked northeast through McDonough County before lifting prior to entering Fulton County.

Tornado event in MCDONOUGH County, ILLINOIS
Start: 04-APR-23 17:52:00
End: 04-APR-23 18:02:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: An EF1 tornado touched down south of Industry, Illinois near highway 67 damaging barns, outbuildings, and snapping many large hardwood trees. The tornado continued to track to the northeast causing significant damage to several empty large grain bins and destroying a portion of a roof of a house. Occasional damage was found to trees, outbuildings, and grain bins across far east-central McDonough County as the tornado appeared to be dissipating just before the McDonough-Fulton County line. The tornado was on the ground for 8.31 miles with a maximum width of 350 yards.  Its peak estimated wind speed was 105 MPH.
Episode narrative: During the afternoon and evening of the 31st, a wave of severe thunderstorms produced numerous tornadoes, severe hail, extensive wind damage, and localized flooding across northern and northeastern Illinois. A total of 37 tornadoes were confirmed across the state. The NWS Chicago office tied a record for the most tornadoes to occur in a single calendar day within the office's county warning area with 22, 17 of which occurred in Illinois. One EF-2 tornado occurred in south-central Lee County and two others in northwest Indiana. Some of the more notable damage includes multiple semi trucks blown over, a garage that had been completely destroyed southeast of Amboy, and the partial roof collapse of the Apollo Theatre in Belvidere which unfortunately resulted in one fatality and 40 injuries.

Tornado event in KENDALL County, ILLINOIS
Start: 31-MAR-23 19:03:00
End: 31-MAR-23 19:05:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado began near the intersection of Arbeiter and Black Roads in unincorporated Joliet. Several homes were damaged including to shingles and one chimney had collapsed. Just about a minute after touching down, the tornado crossed into Will County near Hadrian Dr and continued damaging shingles and trees lifting just before reaching IL Rt. 59.

Tornado event in IROQUOIS County, ILLINOIS
Start: 31-MAR-23 19:20:00
End: 31-MAR-23 19:24:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado occurred south of Stockland dropping just south of E 600 North Rd and east of N 2700 East Rd. The storm damaged trees and power poles and destroyed a small farm outbuilding. The tornado lifted after only a few minutes east of N 3100 East Rd and south of E 880 North Rd just west of the Illinois-Indiana state line.

Tornado event in IROQUOIS County, ILLINOIS
Start: 31-MAR-23 19:04:00
End: 31-MAR-23 19:15:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado originated in Vermillion County south of the town of Rankin east of N 2800E Rd and north of 3700 N Rd. The tornado tracked northeastward crossing into Iroquois County just west of N 1600 East Rd. The storm then dissipated about 8 miles later north of the town of Wellington just east of E 400 North Rd at N 2300 East Rd. While in Vermillion County, the tornado destroyed a couple of sheds and farm outbuildings, uprooted a number of trees, and did some roof damage to a home. In Iroquois County, a few trees were damaged along with the roofs of a couple of outbuildings.
Episode narrative: A line of strong thunderstorms moved into north and central Georgia during the afternoon through the evening on Thursday, January 12th and spawned numerous tornadoes, including several that were long track and significant. Ahead of this line, a few supercells also spawned tornadoes in portions of central and eastern Georgia.  Upon further examination of radar data and high resolution areal imagery, it was found that several tornadoes rotated around and within a larger vortex and caused the widespread damage in the area near Griffin GA, over 2 miles wide in some cases.   The result was that as many as 4 tornadoes were on the ground simultaneously in SW Spalding County, which were rotating around the larger circulation, merging together in several cases and crossing paths. The presence of 3 mergers was identified in the reanalysis. Additional analysis revealed that wind speeds in the EF3 storm reached as high as 155mph or high end EF3.  This confirmed a total of 14 tornadoes, including 10 which resulted from the same storm/larger mesocyclone.

Tornado event in PIKE County, GEORGIA
Start: 12-JAN-23 16:18:00
End: 12-JAN-23 16:19:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: New high resolution areal imagery in concert with a reanalysis of radar data, areal surveys and ground surveys it has been determined that there were multiple tornadoes on the ground simultaneously in southwest Spalding and Northwestern Pike Counties as well as crossing tornado paths. The tornadoes were part of a larger mesocyclone which can be traced west all the way back to the Selma Alabama tornado. Our analysis determined that this tornado spun up near the center of the main mesocylone as it crossed the Flint River in SW Spalding County. The first evidence of a tornado touching down appear along Blanton Mill Road where several trees were uprooted. This tornado would become caught within the larger circulation and swing SE around the center through mostly wooded or swampy areas of SW Spalding County. Numerous trees were snapped or uprooted in a path that that tracks ESE until it reaches Scott Barch Road. It is in this area it crosses the path of a tornado which passes approximately 2 minutes early moving NE on the eastern periphery of the larger mesocyclone. Low end EF1 damage occurred to a barn in this area, however, it could have occurred with the first tornado. Numerous trees are uprooted or snapped in this area as well. The tornado continued ESE crossing Flat Creek causing mid range EF1 damage to trees. It is noted per areal imagery and radar data that as the tornado approached Yarborough Rd and Shackleford Road it become absorbed/merged with a larger stronger circulation/tornado moving to the NE. Damage on the ground in this area is indicative of tornadoes coming in from 2 different directions. The particular circulation is terminated at this point as the larger more dominate tornado continues NE toward a rock quarry along Rover Zetalla Road. It should also be noted that EF2 damage occurred shortly after these 2 tornadoes merged near Yarborough Road but will be attributed to the more dominate circulation.
Episode narrative: The approach of an anomalously strong (for mid-June) upper-level disturbance lead to a widespread severe weather outbreak across portions of the forecast area, especially along and west of the I-35 corridor, during the afternoon into late evening of the 15th. This included the development of numerous supercell thunderstorms across the area. Despite relatively high cloud bases, strong low-level instability and sufficient low-level wind shear aided tornadic outcomes, with eleven tornadoes confirmed across western into southern Oklahoma. Numerous reports of large to very large hail, including reports of 4-inch hail in Lawton, and wind damage were received across area.

Tornado event in ROGER MILLS County, OKLAHOMA
Start: 15-JUN-23 17:47:00
End: 15-JUN-23 17:50:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A storm chaser reported a tornado southwest of Durham in far western Roger Mills County. No damage is known to have occurred and the tornado path is estimated.