torre126/tornado-structure-data huggingface dataset:
Episode narrative: The middle part of June was unusually stormy across the area. Numerous rounds of strong to severe storms impacted the region with multiple squall lines that produced severe winds as well as supercells that produced large hail and tornadoes.  Heavy rain also occurred over a multi-day period, which saturated the ground and led to some instances of flash flooding.  

The synoptic pattern featured well above average 250 mb zonal wind anomalies, which were traceable back to an active subtropical jet stream.  Greater than average instability was also present, in part due to anomalously warm Gulf of Mexico SSTs.  This combination of above average shear from the active subtropical jet and above average instability from the warmer than average SSTs provided a synoptic environment favorable for severe weather as upper level shortwaves moving through the area.  This pattern persisted for many days, leading to an unusually large amount of severe weather.

Tornado event in BAKER County, GEORGIA
Start: 14-JUN-23 13:54:00
End: 14-JUN-23 14:15:00
Direct deaths: 0
Property damage: 1.00K
Event narrative: A short lived tornado was captured by storm chaser video as it crossed farmland in northern Baker County, GA north of Clear Lake Road. The tornado flipped an irrigation pivot as it touched down and then snapped and uprooted several trees along its path before lifting west of Halls Pond. Damage associated with this tornado is consistent with EF-1 damage with maximum sustained winds of 105 mph.

Tornado event in TURNER County, GEORGIA
Start: 14-JUN-23 14:45:00
End: 14-JUN-23 14:46:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A spotter reported a brief tornado touchdown in a rural area west of Highway 41 and north of Ashburn.  No damage was reported.
Episode narrative: Weak low pressure lifting into eastern South Dakota supported widespread thunderstorm activity in the afternoon. One of the stronger storms generated a short lived tornado 4 miles east northeast of the Poinsett Colony in Deuel county.

Tornado event in DEUEL County, SOUTH DAKOTA
Start: 23-SEP-23 15:20:00
End: 23-SEP-23 15:20:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A member of the public reported a brief tornado touchdown. No damage was noted.
Episode narrative: Surface low pressure passed through the area, bringing scattered showers and thunderstorms. Some thunderstorms became strong to severe, producing small hail and gusty winds. Several reports of funnel clouds were received, with one weak tornado reported.

Tornado event in BENTON County, IOWA
Start: 26-SEP-23 14:15:00
End: 26-SEP-23 14:16:00
Direct deaths: 0
Event narrative: Emergency Management confirmed a brief EF-U tornado several miles west of Vinton. Spotters reported a ground circulation lofting corn leaves, beneath the funnel. No damage was noted.
Episode narrative: Isolated showers and thunderstorms moved through the area, with one storm producing a weak tornado in Benton County, Iowa.

Tornado event in BENTON County, IOWA
Start: 22-SEP-23 16:42:00
End: 22-SEP-23 16:43:00
Direct deaths: 0
Event narrative: Multiple trained storm spotters reported a brief tornado. Location and time estimated by radar and reports. There were no reports of damage.
Episode narrative: Thunderstorms developed along an outflow boundary in a very moist airmass. Storms were fed by strong low level winds. In addition to aiding buoyancy, these winds also contributed to significant low level wind shear. Some storms produced weak tornadoes and locally heavy rain that led to flash flooding.

Tornado event in CALDWELL County, TEXAS
Start: 26-OCT-23 07:05:00
End: 26-OCT-23 07:07:00
Direct deaths: 0
Event narrative: A National Weather Service damage survey concluded an EF-0 tornado occurred in far northern Caldwell County. It started near Rolling Ridge Rd. to the northeast of the Two Wishes Polo Club. As the weak circulation was moving to the northeast into the intersection of Rolling Ridge Rd. and Schuelke Rd., the small tornado hit what used to be an old school (which is being converted into a residential home). Nobody was at the home at the time of the small tornado hitting the property. This was a very small tornado that was on the ground for about a minute. The time of the tornado was determined from radar data. The tornado path length was 0.49 miles, and maximum winds were estimated at 65 mph.
Episode narrative: The middle part of June was unusually stormy across the area. Numerous rounds of strong to severe storms impacted the region with multiple squall lines that produced severe winds as well as supercells that produced large hail and tornadoes.  Heavy rain also occurred over a multi-day period, which saturated the ground and led to some instances of flash flooding.  

The synoptic pattern featured well above average 250 mb zonal wind anomalies, which were traceable back to an active subtropical jet stream.  Greater than average instability was also present, in part due to anomalously warm Gulf of Mexico SSTs.  This combination of above average shear from the active subtropical jet and above average instability from the warmer than average SSTs provided a synoptic environment favorable for severe weather as upper level shortwaves moving through the area.  This pattern persisted for many days, leading to an unusually large amount of severe weather.

Tornado event in BERRIEN County, GEORGIA
Start: 14-JUN-23 17:35:00
End: 14-JUN-23 17:36:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado was spotted near Highway 76 in a rural area.  No damage was reported.
Episode narrative: In the early afternoon hours on the 21st, a boundary began firing severe thunderstorms over southwest Nebraska and northwest Kansas. These storms generally moved to the north-northeast as the boundary moved east. In Kansas, these storms caused wind gusts near 75 mph, 2.75 inch diameter hail, and a tornado.

Tornado event in NORTON County, KANSAS
Start: 21-SEP-23 19:36:00
End: 21-SEP-23 19:53:00
Direct deaths: 0
Event narrative: Received a photo of a tornado 7 miles northwest of Norton, KS.  The tornado began northwest of the Road W9 and Road G intersection, traveled southeast ending east of Road W5 between Roads H and I.  No damage was reported.
Episode narrative: The middle part of June was unusually stormy across the area. Numerous rounds of strong to severe storms impacted the region with multiple squall lines that produced severe winds as well as supercells that produced large hail and tornadoes.  Heavy rain also occurred over a multi-day period, which saturated the ground and led to some instances of flash flooding.  

The synoptic pattern featured well above average 250 mb zonal wind anomalies, which were traceable back to an active subtropical jet stream.  Greater than average instability was also present, in part due to anomalously warm Gulf of Mexico SSTs.  This combination of above average shear from the active subtropical jet and above average instability from the warmer than average SSTs provided a synoptic environment favorable for severe weather as upper level shortwaves moving through the area.  This pattern persisted for many days, leading to an unusually large amount of severe weather.

Tornado event in TAYLOR County, FLORIDA
Start: 16-JUN-23 01:20:00
End: 16-JUN-23 01:44:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A well defined tornadic debris signature tracked through the forest of rural western Taylor county.  Damage was limited to trees.

Tornado event in TAYLOR County, FLORIDA
Start: 16-JUN-23 02:45:00
End: 16-JUN-23 02:50:00
Direct deaths: 0
Property damage: 50.00K
Event narrative: A tornado touched down south of Perry, FL on the north side of Houck Rd. Here the tornado produced EF-0 damage to a large metal building system, pulling some of the metal roof panels off the building and sending insulation over to Perry Foley Airport. Traveling southeast across Houck Rd, EF-1 damage was observed as the tornado then flipped up the metal roof of a porch, peeled back the metal roof of an outbuilding, snapped a tree and uprooted a very large tree. Further southeast at the airport a sign was damaged, debris from the metal building was found, and one aircraft broke free of its tail rope and was pushed sideways. The tornado then lifted shortly past the airport. Damage cost was estimated.
Episode narrative: An enhanced risk resulted in a numerous hail event across southwest Iowa. Storms developed after 4 PM along a stationary front near the Nebraska/Kansas border and moved into Iowa. A total of 55 storm reports were sent out by the office, most of which were for hail. The largest hailstone reported was 3 inches near Thurman. In addition to the hail, there were 3 observed tornadoes. Two in Fremont County and one in Pottawatomie County.

Tornado event in FREMONT County, IOWA
Start: 19-APR-23 19:16:00
End: 19-APR-23 19:16:00
Direct deaths: 0
Event narrative: Multiple photographs and reports from storm chasers and public confirm a brief tornado near this location. No damage was reported or surveyed.
Episode narrative: Thunderstorms developed ahead of a cold front tracking through western Wisconsin during the late afternoon hours on Thursday (7/27).  The thunderstorms tracked through central and north-central Wisconsin during the early evening hours.  The strongest storms produced damaging winds, hail up to half dollar size and a tornado.

Tornado event in FLORENCE County, WISCONSIN
Start: 27-JUL-23 18:22:00
End: 27-JUL-23 18:26:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado formed at 7:22 pm CDT in the Hiles area in Forest County and continued southeast before dissipating at 7:26 pm CDT. Total path length is estimated to be 1.68 miles long, with a width of 90 yards.  Peak wind estimated to be around 76 mph.
Episode narrative: A line of storms developed in central Nebraska where they merged and began to bow as it approached southeast Nebraska. The surging storms produced widespread wind damage downing trees, powerlines, and removed the roof from a hog barn. The strongest measured wind gust was 81 mph near Dorchester in Saline County.

Tornado event in LANCASTER County, NEBRASKA
Start: 29-JUL-23 07:18:00
End: 29-JUL-23 07:19:00
Direct deaths: 0
Event narrative: A brief, narrow tornado embedded in intense downburst winds struck a portion of Martell, NE.  The tornado uprooted and snapped trees, caused roof and siding damage, and tore the roof off a BnB that was attached to a large barn.  The tornado's width was only 100 yards wide and a little more than a quarter mile long.
Episode narrative: An enhanced risk resulted in a numerous hail event across southwest Iowa. Storms developed after 4 PM along a stationary front near the Nebraska/Kansas border and moved into Iowa. A total of 55 storm reports were sent out by the office, most of which were for hail. The largest hailstone reported was 3 inches near Thurman. In addition to the hail, there were 3 observed tornadoes. Two in Fremont County and one in Pottawatomie County.

Tornado event in FREMONT County, IOWA
Start: 19-APR-23 19:23:00
End: 19-APR-23 19:26:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Multiple photographs and accounts from storm chasers and public confirm a tornado in this approximate location that lasted for approximately 3 minutes. No damage was reported with this tornado.

Tornado event in POTTAWATTAMIE County, IOWA
Start: 19-APR-23 18:10:00
End: 19-APR-23 18:11:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Multiple photos, videos, and reports confirm that a brief 30-second-long ground circulation developed below a long-lived funnel cloud in this approximate location, lofting dust or light debris. No damage was reported or surveyed with this tornado.
Episode narrative: The middle part of June was unusually stormy across the area. Numerous rounds of strong to severe storms impacted the region with multiple squall lines that produced severe winds as well as supercells that produced large hail and tornadoes.  Heavy rain also occurred over a multi-day period, which saturated the ground and led to some instances of flash flooding.  

The synoptic pattern featured well above average 250 mb zonal wind anomalies, which were traceable back to an active subtropical jet stream.  Greater than average instability was also present, in part due to anomalously warm Gulf of Mexico SSTs.  This combination of above average shear from the active subtropical jet and above average instability from the warmer than average SSTs provided a synoptic environment favorable for severe weather as upper level shortwaves moving through the area.  This pattern persisted for many days, leading to an unusually large amount of severe weather.

Tornado event in WALTON County, FLORIDA
Start: 19-JUN-23 10:16:00
End: 19-JUN-23 10:21:00
Direct deaths: 0
Property damage: 25.00K
Event narrative: Several videos posted on social media indicated that a tornado touched down on the Choctawhatchee Bay just west of the Sandestin Resort. Initial damage included damage to a storm shutter on the condo directly facing the Bay, and isolated snapped and toppled trees between the Bay and Baytowne Avenue West. This damage was consistent with EF0 damage. EF1 damage was observed east of Baytowne Avenue, where several hardwood trees were uprooted in multiple directions on Turnberry Court. After crossing a golf course and small unpopulated area, the highest concentration of damage occurred along Laurel Way and Ravens Run, where multiple trees were snapped and uprooted with minor roof damage noted to a few homes. The tornado continued east causing minor roof damage to a home on Olde Towne Avenue in addition to uprooting a few hardwood trees. The tornado continued to the east of the resort, snapping and uprooting trees on Mack Bayou Road and east Mack Bayou Drive where several fences sustained damage in addition to minor damage to the roof of a small business. The tornado then lifted east of Mack Bayou Drive. Damage was consistent with an EF1 max wind speed of 105 mph.
Episode narrative: Broad troughing was present aloft across the Western US during the afternoon/evening of the 19th. An area of surface low-pressure slowly deepened and moved towards north-central Kansas, with dryline extending from central Kansas through western-north Texas by the late afternoon hours. A well-timed lead upper wave, combined with broken insolation, led to the development of a few supercell thunderstorms across central Oklahoma. Multiple instances of large to very large (>2 inches) hail, along with 18 tornadoes, occurred across central Oklahoma.

Tornado event in MCCLAIN County, OKLAHOMA
Start: 19-APR-23 18:30:00
End: 19-APR-23 19:05:00
Direct deaths: 1
Property damage: 4.00M
Event narrative: The third tornado of the outbreak, the Cole-Goldsby Tornado, was the most destructive of the outbreak. The multiple-vortex tornado touched down near Rockwell Avenue south of 260th Street and moved in an erratic path, generally east and east-northeast through Cole. Many homes and mobile homes were damaged or destroyed near and in Cole. A man was killed in a destroyed mobile home in the far western portion of Cole. A woman was injured in a nearby mobile home, but died of a heart attack on the way to the hospital (indirect fatality). EF3 rated damage was found to at least three homes on Portland Avenue and Main Street in Cole with most exterior walls removed.

After moving through Cole and crossing State Highway 74B, the tornado continued to move northeast, then becoming narrower and turning northerly as it past 290th Street/Chestnut Road, moving between Western Avenue and Santa Fe Avenue just west of the town of Goldsby and dissipating before reaching State Highway 9. It continued to produce roof damage (up to EF2) to homes and tree damage.
Episode narrative: A widespread significant damaging wind storm tracked across nearly all of eastern Nebraska and western Iowa on the morning of July 12. These storms produced widespread winds of 60 to 80 mph, with embedded stronger downbursts with wind speeds up to 100 mph. The strongest measured wind gust was 82 mph in Dodge County NE, but some of the high-end straight line wind damage supports embedded wind speeds up to 100 mph.

This storm also produced a few embedded tornadoes. Some of the tornado tracks were only identified by narrow swaths of damage through mature cornfields, with minimal damage otherwise and peak wind speeds similar to the nearby downburst winds. All but one of the tornadoes was preceded by a Wireless Emergency Alert. There were 0 reported injuries or fatalities.

Tornado event in POTTAWATTAMIE County, IOWA
Start: 12-JUL-23 05:32:00
End: 12-JUL-23 05:33:00
Direct deaths: 0
Event narrative: There is a distinct tornado track through crop fields approximately 40 yards wide at the max. The track begins in a soybean field and then moves into the corn field where the narrow track and convergent flow pattern are most pronounced. It crosses a creek, breaks a few branches, and then through another corn field where there is convergent flow into the center of the track from the edges.
Episode narrative: The middle part of June was unusually stormy across the area. Numerous rounds of strong to severe storms impacted the region with multiple squall lines that produced severe winds as well as supercells that produced large hail and tornadoes.  Heavy rain also occurred over a multi-day period, which saturated the ground and led to some instances of flash flooding.  

The synoptic pattern featured well above average 250 mb zonal wind anomalies, which were traceable back to an active subtropical jet stream.  Greater than average instability was also present, in part due to anomalously warm Gulf of Mexico SSTs.  This combination of above average shear from the active subtropical jet and above average instability from the warmer than average SSTs provided a synoptic environment favorable for severe weather as upper level shortwaves moving through the area.  This pattern persisted for many days, leading to an unusually large amount of severe weather.

Tornado event in TAYLOR County, FLORIDA
Start: 16-JUN-23 00:43:00
End: 16-JUN-23 00:45:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief EF0 touched down in rural western county with damage limited to trees.  A tornadic debris signature was visible on TLH radar.
Episode narrative: Broad troughing was present aloft across the Western US during the afternoon/evening of the 19th. An area of surface low-pressure slowly deepened and moved towards north-central Kansas, with dryline extending from central Kansas through western-north Texas by the late afternoon hours. A well-timed lead upper wave, combined with broken insolation, led to the development of a few supercell thunderstorms across central Oklahoma. Multiple instances of large to very large (>2 inches) hail, along with 18 tornadoes, occurred across central Oklahoma.

Tornado event in CLEVELAND County, OKLAHOMA
Start: 19-APR-23 20:07:00
End: 19-APR-23 20:08:00
Direct deaths: 0
Property damage: 5.00K
Event narrative: The thirteenth tornado of the outbreak touched down briefly in east Norman, along Geronimo Drive, northwest of 108th Avenue NE and Alameda Drive. An outbuilding and trees were damaged.
Episode narrative: A cold front crossed western North Carolina during the early morning hours on August 15th with associated showers and storms. Some of these storms reached severe levels, producing damaging winds over the mountains and foothills of Northwest North Carolina and a tornado in Watauga County.

Tornado event in WATAUGA County, NORTH CAROLINA
Start: 15-AUG-23 00:02:00
End: 15-AUG-23 00:03:00
Direct deaths: 0
Property damage: 5.00K
Event narrative: The tornado moved a short distance into western Watauga County from Avery County, NC. Sporadic uprooted hardwood trees were noted by a ground survey and drone flight in a wooded area between Buckeye Road and Seminole Trail. The tornado traveled approximately one-third of a mile, and dissipated before reaching Blevins Lane and Seminole Trail. Damage values are estimated.
Episode narrative: An upper level low passing over Wyoming combined with a strong jet stream to bring an outbreak of severe weather. Three tornadoes were confirmed in the WFO Riverton warning area on this day. This was the most in one day since June 12, 2017. There was one tornado in Sweetwater County and two in Natrona County. The largest and most impactful tornado was south of Midwest, WY in northern Natrona County where a home and surrounding property was damaged. Very large hail also occurred with some of the storms. The largest hail occurred in southern Johnson County and northern Natrona County where baseball size hail was reported from strongly rotating supercell thunderstorms. Other severe thunderstorms moved from Lander to Riverton and dropped quarter to golf ball size hail, causing damage to many roofs and vehicles.

Tornado event in NATRONA County, WYOMING
Start: 23-JUN-23 13:15:00
End: 23-JUN-23 13:35:00
Direct deaths: 0
Property damage: 100.00K
Event narrative: There were numerous reports, pictures, and video of a cone tornado that touched down to the south of Midwest, WY. The tornado remained over open country for the most part. However, the tornado damaged one home where a large section of the roof was removed. Exterior walls remained standing. A trailer was overturned, fuel tanks were blown away, and trees near the residence were damaged.

Based on the FR12 damage indicator category, this tornado was rated EF1 using a low to middle end DOD estimate for the type of construction. Winds are estimated to have been around 110 mph. Stronger winds could have occurred elsewhere along the track, but open country prevented any further evidence of wind damage. Damage survey completed by county emergency management officials.
Episode narrative: On the morning of the 7th, a robust mesoscale convective system (MCS) entered portions of northwestern Oklahoma and translated towards central Oklahoma through mid-morning hours. A corridor of wind damage and one tornado occurred across Woodward County due to a mesovortex. Elsewhere, intermittent increases in storm intensity lead to reports and measurements of severe-caliber wind and small hail. Brief training of heavy thunderstorm cores also lead to street flooding near the community of Kingfisher.

During the evening hours of the 7th, an additional MCS developed across the Texas Panhandle and entered western Oklahoma. Once again, wind damage occurred with the most intense portions of the thunderstorm line. This included a report of extensive wind damage near Foss State Park in Custer County.

Tornado event in WOODWARD County, OKLAHOMA
Start: 07-JUL-23 03:35:00
End: 07-JUL-23 03:36:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Numerous power poles and lines blown down in the vicinity. Time is radar estimated.