torre126/tornado-structure-data huggingface dataset:
Episode narrative: The most notable storm of the day was an intense, long-lived, cyclic tornadic supercell which significantly impacted Scotts Bluff and Morrill Counties during the early evening hours. This storm originated in the central Laramie Range of Wyoming approximately 50 miles to the west around 3 to 4 hours prior to reaching western Nebraska, producing several confirmed tornadoes along its path. Environmental conditions across Scotts Bluff County continued to support the potential for tornadoes, with abundant moisture pooling in the Platte River Valley and favorable east-to-southeast winds near the surface with a strong southwesterly jet stream aloft. The supercell produced 7 additional confirmed tornadoes (6 in Scotts Bluff County and 1 in Morrill County), most notably including an EF-2 tornado which tracked approximately 1-3 miles ENE of Gering between 7:38 PM and 7:45 PM MDT. A Tornado Emergency was in effect for Gering and Scottsbluff from 7:31 PM until 8:00 PM MDT, which was the first ever issuance of this product from the NWS in Cheyenne. Numerous instances of baseball to softball sized hail occurred across Scotts Bluff County including the city of Scottsbluff. A second intense supercell developed and tracked across Scotts Bluff County in the wake of the first tornadic storm, producing a second swath of very large (baseball sized) hail over the same area. In addition to this primary focus area for intense storms, other isolated storms also brought quarter sized hail, 60 MPH wind gusts to portions of the western Nebraska Panhandle.

Tornado event in SCOTTS BLUFF County, NEBRASKA
Start: 23-JUN-23 19:05:00
End: 23-JUN-23 19:05:00
Direct deaths: 0
Event narrative: A trained spotter reported a tornado 2 miles WNW of Minatare.
Episode narrative: Two waves of thunderstorms in central Minnesota produced significant wind damage. A brief EF-0 tornado occurred near Rockford, MN in Wright County during the first wave of storms. The strongest estimated thunderstorm gusts were around 75-80 mph given the nature of the observed wind damage.

Tornado event in WRIGHT County, MINNESOTA
Start: 29-SEP-23 18:48:00
End: 29-SEP-23 18:49:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado touched down just south of the intersection of Wright County Road 14 and 30th Street Southeast. The tornado tracked northeast and mainly uprooted or broke over 100 trees, most of them at one farmstead. A storm survey was conducted and maximum winds were estimated at 85 mph.
Episode narrative: As a strong mid-level jet streak pushed northeast ahead of an upper-level low pressure area in southwest South Dakota, numerous thunderstorms developed along a weak surface boundary during the mid to late afternoon hours in far eastern South Dakota.  While instability was somewhat limited at a maximum of around 1000 J/kg, a very low LCL and concentration of 0-1 km bulk shear supported the development of four brief tornadoes.

Tornado event in BROOKINGS County, SOUTH DAKOTA
Start: 23-SEP-23 15:16:00
End: 23-SEP-23 15:16:00
Direct deaths: 0
Event narrative: A storm chaser witnessed a very brief touchdown in an open soybean field between 470th and 471st Avenue and 199th and 200th Street. The lack of damage indicators did not allow for a rating of this tornado.
Episode narrative: As a strong mid-level jet streak pushed northeast ahead of an upper-level low pressure area in southwest South Dakota, isolated thunderstorms developed late afternoon in southwest Minnesota. While instability was somewhat limited at a maximum of around 1000 J/kg, a very low LCL and concentration of 0-1 km bulk shear supported the development of a brief tornado.

Tornado event in NOBLES County, MINNESOTA
Start: 23-SEP-23 14:56:00
End: 23-SEP-23 14:56:00
Direct deaths: 0
Event narrative: A spin up developed around one-half mile north-northeast of Leota. A storm chaser witnessed field debris lofted and circulated by the very brief funnel just west of Birkett Avenue. There were no damage indicators present to allow for a rating of this tornado.
Episode narrative: Severe thunderstorms produced heavy rain, large hail and damaging wind across parts of Boulder, Denver, Elbert, Larimer and Weld counties.  One tornado touched down briefly near Carr, but no damage was observed.  Hail up to half dollar size was observed, along with peak wind gusts around 60 mph.  Heavy rainfall, up to 3.64 inches,  produced flooding and flash flooding around Fort Collins and Livermore in Larimer County.  Vehicles were stuck in up to 3 feet of standing water.  Water from heavy rainfall filled the lagoon and surrounding retaining walls near the Lory Student Center on Colorado State University's main campus in Fort Collins.  At least four buildings on campus were damaged by floodwater, university officials said.  In the Cameron Peak burn area localized flash flooding was observed.  Buckhorn Road was impassable from 1 mile east of Moose Ridge Road to Forest Road 129.  In addition, multiple mudslides forced the closure of Highway 126 in Jefferson County.

Tornado event in WELD County, COLORADO
Start: 31-JUL-23 16:46:00
End: 31-JUL-23 16:47:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down briefly in open country near Carr.  No damage was reported.
Episode narrative: July 28th saw two rounds of severe storms move across the Chicago metro, one during the predawn hours of the morning and another during the evening. The first round brought isolated instances of damaging wind to the area and the second featured damaging winds, severe hail, and 13 tornadoes across the WFO Chicago CWA: 11 in Illinois and 2 in Indiana. Additionally, temperatures in the 90s and high humidity resulted in oppressively hot conditions with afternoon heat indices as high as 105-115ï¿½ï¿½F.

Tornado event in KANKAKEE County, ILLINOIS
Start: 28-JUL-23 22:30:00
End: 28-JUL-23 22:36:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado began just west of 8000 East Road at 2500 North Road west of Momence, based upon drone imagery provided by the Kankakee County Emergency Management Agency. The tornado produced EF-0 damage to a farm near the aforementioned intersection with damage to tree branches and part of a metal outbuilding roof damaged. The tornado continued east just south of 2500 North Road with a narrow, convergent path evident in a corn field from drone imagery. The tornado's intensity briefly weakened in the immediate vicinity of the Kankakee River with only limited tree damage noted. Just east of River South Road, the tornado again intensified as it moved through fields toward IL-17. Drone footage again indicated a narrow path of convergent damage in corn fields until the tornado moved into the backyards of a few residences on River South Road, causing significant damage to multiple trees. As the tornado moved east, drone footage revealed additional corn flattened in the field southwest of the Van Drunen Farms building. The tornado then struck a row of two-story apartment homes on Harvard Street, removing the roof and a portion of the upper-level walls from one of them and depositing the debris over the next couple of blocks to the east. Damage to the adjacent apartment homes was very minor. East of Harvard Street, there was little to no additional structural damage, but there was considerable damage to trees and power lines, especially along Indiana Street. East of Momence, the tornado continued along Route 114. Just west of N 13250E Road, it removed part of the roof of a metal outbuilding while snapping and uprooting additional trees. Little to no additional tornado damage was observed east of the intersection of Route 114 and N 13250E Road.
Episode narrative: Scattered thunderstorms increased during the heat of the late afternoon hours. The storms were associated with another in a parade of 500 mb shortwaves moving east-southeast from the Missouri Valley.

Tornado event in JACKSON County, ILLINOIS
Start: 05-AUG-23 16:15:00
End: 05-AUG-23 16:16:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief touchdown occurred in a field. No damage was observed. An eyewitness documented the tornado briefly touching down in a farm field east of Highway 3. The tornado was associated with a rapidly strengthening thunderstorm cell that moved east-southeast.
Episode narrative: An MCV moved through northern sections of Missouri during the evening of August 4th into the early morning hours of August 5th. Widespread showers and storms developed. Some of the storms became severe. There were some damaging winds reported as well as two tornadoes. One tornado moved through Baring, MO with most of the town sustaining some kind of damage. Also, two people sustained minor injuries. Another tornado developed in Adams County in Illinois near Marcelline.

Tornado event in ADAMS County, ILLINOIS
Start: 05-AUG-23 01:24:00
End: 05-AUG-23 01:31:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: The tornado developed about three quarters of a mile south southwest of Marcelline, IL around 2:24 AM on August 5th, 2023. It tracked to the east-northeast, crossing Illinois Route 96 just north of 2400th Avenue, snapping tree limbs and displacing power poles. Further northeast, it then crossed N 2450th Avenue where it caused damage to a few homes and trees in the area. After crossing E 900th Street north of the intersection with N 2450th Avenue, it crossed E 953rd Lane and caused additional damage to a home, an outbuilding, and trees. The tornado lifted after this damage, around 2:31 AM. Overall, the tornado was rated EF1 with a path length of 2.87 miles. The max path width was 200 yards. No deaths or injuries were reported.
Episode narrative: The most notable storm of the day was an intense, long-lived, cyclic tornadic supercell which significantly impacted Scotts Bluff and Morrill Counties during the early evening hours. This storm originated in the central Laramie Range of Wyoming approximately 50 miles to the west around 3 to 4 hours prior to reaching western Nebraska, producing several confirmed tornadoes along its path. Environmental conditions across Scotts Bluff County continued to support the potential for tornadoes, with abundant moisture pooling in the Platte River Valley and favorable east-to-southeast winds near the surface with a strong southwesterly jet stream aloft. The supercell produced 7 additional confirmed tornadoes (6 in Scotts Bluff County and 1 in Morrill County), most notably including an EF-2 tornado which tracked approximately 1-3 miles ENE of Gering between 7:38 PM and 7:45 PM MDT. A Tornado Emergency was in effect for Gering and Scottsbluff from 7:31 PM until 8:00 PM MDT, which was the first ever issuance of this product from the NWS in Cheyenne. Numerous instances of baseball to softball sized hail occurred across Scotts Bluff County including the city of Scottsbluff. A second intense supercell developed and tracked across Scotts Bluff County in the wake of the first tornadic storm, producing a second swath of very large (baseball sized) hail over the same area. In addition to this primary focus area for intense storms, other isolated storms also brought quarter sized hail, 60 MPH wind gusts to portions of the western Nebraska Panhandle.

Tornado event in SCOTTS BLUFF County, NEBRASKA
Start: 23-JUN-23 18:44:00
End: 23-JUN-23 18:47:00
Direct deaths: 0
Event narrative: A confirmed tornado produced a broad, diffuse area of damage along CR 24 and Highway 92 from a secondary tornadic circulation just east of the main Gering tornado. An EF-1 rating was based on a quonset collapse and broken power poles.
Episode narrative: An intense, long-lived supercell initially developed near the town of Chugwater over the higher terrain of the central Laramie Range around 3:00 PM on 6/23, tracking to the east-southeast across southern Platte and Goshen Counties through approximately 7:00 PM. A small, terrain-driven area of low pressure and resultant cyclonic flow resulted in moisture pooling and backed, easterly near-surface flow near the track of the storm which resulted in a favorable environment for tornadoes. The cyclic supercell produced 5 separate confirmed tornadoes, most notably including an EF-2 tornado which developed near the town of Hawk Springs. A swath of large hail up to two inches in diameter also occurred with this storm. A separate storm over far northwestern Converse County also produced a brief tornado that afternoon. A second round of strong to severe thunderstorms impacted Platte and Goshen Counties later in the day.

Tornado event in GOSHEN County, WYOMING
Start: 23-JUN-23 17:44:00
End: 23-JUN-23 17:58:00
Direct deaths: 0
Event narrative: Official NWS Storm Survey confirms an EF-1 tornado which bent free-standing light and flag poles along its path, also collapsing the walls of a small outbuilding.
Episode narrative: Showers and thunderstorms percolated through much of the day along a stationary boundary over northwest Iowa. By evening a more robust shortwave moved across the area, accompanied by 30 kts of shear and 1500-2000 J/kg of MLCAPE. This allowed for storms to strengthen across west central Iowa with gusty winds producing some minor damage to trees and out buildings. Additionally, due to the orientation of the shear, a few weak tornadoes developed and were discovered using high resolution satellite imagery.

Tornado event in CARROLL County, IOWA
Start: 05-AUG-23 20:24:00
End: 05-AUG-23 20:25:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado occurred north of Highway 30 west of Carroll Iowa.  The tornado was found using high resolution satellite imagery.   The tornado was brief and did not impact any damage indicators, hence the EFU rating.

Tornado event in SAC County, IOWA
Start: 05-AUG-23 20:29:00
End: 05-AUG-23 20:31:00
Direct deaths: 0
Property damage: 50.00K
Event narrative: Report of damage from emergency manager later identified as a tornado path using high resolution satellite imagery.  The tornado impacted a outbuilding and tossed debris northward into an agricultural field with EF0 damage.
Episode narrative: A late day frontal zone moved into an unstable airmass with up to 2000 J/kg MUCAPE and sparked several severe thunderstorms, which produced large hail up to golf ball size. In addition, a couple of brief tornadic spin ups occurred across Kingsbury County, but resulted in no damage.

Tornado event in KINGSBURY County, SOUTH DAKOTA
Start: 10-AUG-23 19:10:00
End: 10-AUG-23 19:12:00
Direct deaths: 0
Event narrative: A tornado spun up initially around one-third mile southeast of the intersection of 202nd Street and 442nd Aveune. A video documented the tornado as it tracked east-northeast across open fields for around one mile before lifting just south of 202nd Street approximately one-half mile east of 443rd Avenue.  The tornado caused no known damage to incur a rating. The average path width was 20 yards.

Tornado event in KINGSBURY County, SOUTH DAKOTA
Start: 10-AUG-23 18:41:00
End: 10-AUG-23 18:42:00
Direct deaths: 0
Event narrative: A report was relayed through De Smet Fire of a brief tornado which touched down north of 201st Street just south of Mud Lake.  The tornado tracked eastward across open grass and marsh lands for around one-half mile before reaching the southern portion of Mud Lake where the tornado was observed pulling up water shortly before dissipating.  The average path width was 20 yards. The tornado did not cause any damage to allow designation of a rating.
Episode narrative: A long-lived supercell thunderstorm tracked across Kimball and Cheyenne Counties during the evening hours on 6/26, producing multiple tornadoes and numerous instances of golf ball to baseball sized hail. Most notably, a 3.5 inch diameter hailstone was observed in the town of Bushnell. An official NWS damage survey confirmed an EF-1 tornado to the southwest of Kimball between 8:01 and 8:05 PM MDT. Additional severe thunderstorms occurred over Dawes County near Chadron later in the evening.

Tornado event in KIMBALL County, NEBRASKA
Start: 26-JUN-23 19:29:00
End: 26-JUN-23 19:29:00
Direct deaths: 0
Event narrative: An NWS Employee observed a brief tornado 2 miles S of Kimball.
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 GRADY County, OKLAHOMA
Start: 19-APR-23 18:20:00
End: 19-APR-23 18:23:00
Direct deaths: 0
Property damage: 10.00K
Event narrative: The second tornado of the outbreak developed along County Road 1340 about 1.5 miles west of the Grady-McClain County line. The tornado moved east along County Road 1340 destroying a small trailer and a small shed, and damaging trees and a power pole. The tornado moved into McClain County.
Episode narrative: Showers and thunderstorms percolated through much of the day along a stationary boundary over northwest Iowa. By evening a more robust shortwave moved across the area, accompanied by 30 kts of shear and 1500-2000 J/kg of MLCAPE. This allowed for storms to strengthen across west central Iowa with gusty winds producing some minor damage to trees and out buildings. Additionally, due to the orientation of the shear, a few weak tornadoes developed and were discovered using high resolution satellite imagery.

Tornado event in SAC County, IOWA
Start: 05-AUG-23 20:30:00
End: 05-AUG-23 20:31:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Tornado was found using high resolution satellite imagery.  Tornado had a curved path through open agricultural fields.  There was no damage to damage indicators, hence the EFU rating.
Episode narrative: Scattered thunderstorms developed along a frontal boundary during the afternoon and early evening.  Stretching at the cloud base resulted in several reported funnels, with one brief tornado across southwest Minnesota.

Tornado event in NOBLES County, MINNESOTA
Start: 13-AUG-23 18:14:00
End: 13-AUG-23 18:18:00
Direct deaths: 0
Property damage: 10.00K
Event narrative: A tornado touched down around 1 mile west-southwest of Kinbrae, just south of 120th Street to the east of Town Avenue.  The tornado traveled northeast and crossed the road, where the tornado passed through a farmstead and removed a few metal panels from a farm outbuilding. After the tornado left a path across a corn field while it moved another one-half mile northeast, the tornado impacted a tree line and uprooted a large pine tree.  The tornado continued across open fields with a slightly more eastward turn, then lifted near the intersection of 110th Street and Ulrich Avenue.  The path was captured by a local resident with a drone, with an average path width of 40 yards. The tornado was rated an EF-0 with a maximum wind speed of 80 mph. Property damage costs are a rough estimate.
Episode narrative: The most notable storm of the day was an intense, long-lived, cyclic tornadic supercell which significantly impacted Scotts Bluff and Morrill Counties during the early evening hours. This storm originated in the central Laramie Range of Wyoming approximately 50 miles to the west around 3 to 4 hours prior to reaching western Nebraska, producing several confirmed tornadoes along its path. Environmental conditions across Scotts Bluff County continued to support the potential for tornadoes, with abundant moisture pooling in the Platte River Valley and favorable east-to-southeast winds near the surface with a strong southwesterly jet stream aloft. The supercell produced 7 additional confirmed tornadoes (6 in Scotts Bluff County and 1 in Morrill County), most notably including an EF-2 tornado which tracked approximately 1-3 miles ENE of Gering between 7:38 PM and 7:45 PM MDT. A Tornado Emergency was in effect for Gering and Scottsbluff from 7:31 PM until 8:00 PM MDT, which was the first ever issuance of this product from the NWS in Cheyenne. Numerous instances of baseball to softball sized hail occurred across Scotts Bluff County including the city of Scottsbluff. A second intense supercell developed and tracked across Scotts Bluff County in the wake of the first tornadic storm, producing a second swath of very large (baseball sized) hail over the same area. In addition to this primary focus area for intense storms, other isolated storms also brought quarter sized hail, 60 MPH wind gusts to portions of the western Nebraska Panhandle.

Tornado event in SCOTTS BLUFF County, NEBRASKA
Start: 23-JUN-23 18:50:00
End: 23-JUN-23 18:50:00
Direct deaths: 0
Event narrative: A trained spotter reported a rain-wrapped tornado with lofted debris near the intersection of CR 26 and Highway 92.
Episode narrative: During the evening of July 12, scattered thunderstorms dropped 13 tornadoes across far northeast Illinois, primarily within the west of northwest suburbs of Chicago. Of these 13 tornadoes, three were determined to be EF-1 with the remaining 10 being EF-0.

Tornado event in KANE County, ILLINOIS
Start: 12-JUL-23 17:16:00
End: 12-JUL-23 17:32:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado started in a farm field east of Kendall Road and continued eastward through Elgin. Damage along the path of the tornado consisted of snapped trees and tree limbs, especially between Bowes Bend Drive and Randall Road. Damage to roofs, siding, and walls of homes, a garage, and a farm building was also noted near Bowes Bend Drive and Longcommon Parkway. The roof of a church was also damaged near Nesler Road. The storm crossed into Cook County on the southwest side of Bluff Spring Fen. The tornado appeared to lift near the intersection of Gifford Road and Lake Street.
Episode narrative: Overnight August 11th into August 12th, discrete supercells congealed into a convective complex. This system produced widespread wind damage from northeast Missouri and west central Illinois as far south as the St. Louis Metropolitan Area.

Tornado event in MONTGOMERY County, MISSOURI
Start: 12-AUG-23 02:34:00
End: 12-AUG-23 02:38:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: The tornado touched down 5 miles southwest of Middletown, on the west side of Swope School Road, just north of intersection with Highway A. In this location, several trees and tree branches were blown down. The tornado moved to the southeast, crossing Highway A and then as it crossed Trinity Church Road, several large tree limbs were snapped off and blocked the road. The tornado continued to the southeast for almost two more miles with additional minor tree damage before lifting and dissipating near the intersection of Nagel Road and Poppy Road, about 4 miles south southwest of Middletown. Overall the tornado was rated EF0 with a path length of 2.54 miles and a max path width of 40 yards. No deaths or injuries were reported.